1
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Liu B, Cao J, Hong B, You H, Li T, Yu Z, Li D, Liang B, Gan N. A microfluidic chip platform based on Pt nanozyme and magnetized phage composite probes for dual-mode detecting and imaging pathogenic bacteria viability. Talanta 2024; 275:126067. [PMID: 38640522 DOI: 10.1016/j.talanta.2024.126067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/30/2024] [Accepted: 04/05/2024] [Indexed: 04/21/2024]
Abstract
The detection of pathogen viability is critically important to evaluate its infectivity. In the study, an integrated microfluidic chip based on dual-mode analytical strategy was developed to rapidly realize detection of bacteria activity (with Salmonella typhimurium, S.T, as a model analyte). Firstly, the composite probes, including deactivated phage modified magnetic beads and nano Pt-antimicrobial peptide (AMP) which can specifically recognize Gram-negative bacteria as nanozyme were prepared. When the composite probes are introduced into the chip together with target bacteria, after enrichment, oscillating and magnetic separation, they will conjugate with S.T and produce a magnetic sandwich complex. The complex can catalyze tetramethylbenzidine (TMB)-H2O2 to produce visible colorimetric signals which is correspondent to the total S.T content. Simultaneously, PtNPs in the complex can produce hydroxyl radical oxidation (∙OH) by decomposing H2O2. Under the synergistic action of ∙OH and AMP, the captured live S.T can be lysed to release ATP and emit bioluminescence signals which corresponds to the live S.T concentration. Therefore, the chip can simultaneously detect and image S.T at different viability in one test. The dual-mode assay demonstrated high sensitivity (≤33 CFU/mL), high specificity (identifying strain), signal amplification (5 folds) and short time (≤40min). The chip array can detect four samples in one test and exhibited advantages of high-integration, -sensitivity, -specificity and miniaturization, which are suitable to rapidly detect and image pathogen's viability in trace level. The replacement of phage probes can detect other bacteria. It has a wide prospect in pathogens screening.
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Affiliation(s)
- Bailu Liu
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China
| | - Jingya Cao
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China
| | - Binxin Hong
- School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Hang You
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China
| | - Tianhua Li
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China
| | - Zhenzhong Yu
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China
| | - Dengfeng Li
- School of Marine Science, Ningbo University, Ningbo, 315211, China
| | - Baihui Liang
- Healthy & Intelligent Kitchen Engineering Research Center of Zhejiang Province, Ningbo, 315336, China; Ningbo Fotile Kitchenware Co., Ltd., Ningbo, Zhejiang 315336, China.
| | - Ning Gan
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang province, 315211, China.
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2
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Chang JJ, Tian X, Cademartiri L. Plasma-based post-processing of colloidal nanocrystals for applications in heterogeneous catalysis. NANOSCALE 2024; 16:12735-12749. [PMID: 38913069 DOI: 10.1039/d4nr01458h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
This review summarizes the work on the use of plasmas to post-process nanostructures, in particular colloidal nanocrystals, as promising candidates for applications of heterogeneous catalysis. Using plasma to clean or modify the surface of nanostructures is a more precisely controlled method compared to other conventional methods, which is preferable when strict requirements for nanostructure morphology or chemical composition are necessary. The ability of plasma post-processing to create mesoporous materials with high surface areas and controlled microstructure, surfaces, and interfaces has transformational potential in catalysis and other applications that leverage surface/interface processes.
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Affiliation(s)
- Julia J Chang
- Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA
| | - Xinchun Tian
- Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA
| | - Ludovico Cademartiri
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43012, Parma, Italy.
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3
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Mymoona P, Shibu ES, Jeyabharathi C. Adsorbed Carbon Monoxide-Enabled Self-Terminated Au-Grafting on Pt 6 Nanoclusters for Enhanced Methanol Electrooxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401998. [PMID: 38973636 DOI: 10.1002/smll.202401998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/15/2024] [Indexed: 07/09/2024]
Abstract
The study presents the first example of an adsorbed carbon monoxide (CO) enabled self-terminated Au-grafting on triphenylphosphine (PPh3) stabilized Pt6 nanoclusters (NCs) (Pt6 (PPh3)4Cl5 NCs or Pt6 NCs). Adsorbed PPh3 ligands weaken the Pt-CO bond enabling the self-terminated Au-grafting on Pt6 NCs. The Au-grafted Pt6 NCs exhibit enhanced methanol electrooxidation (MOR) in acidic solutions. The surface is composed of a PtAu ensemble exhibiting enhanced MOR and CO tolerance due to the synergistic interaction of Pt with Au and PPh3. The hydrogen underpotential deposition (H-UPD) signal from a CO-covered surface reveals the existence of free-Pt sites on the PtAu ensemble causing higher MOR reactivity. The Au and PPh3 ensure electrocatalytic activity of the NCs, depriving of them at anodic potentials results in "a death-valley" trend.
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Affiliation(s)
- Paloli Mymoona
- Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Edakkattuparambil Sidharth Shibu
- Smart Materials Lab, Department of Nanoscience and Technology (DNST), University of Calicut (UoC), Malappuram, Kerala, 673635, India
| | - Chinnaiah Jeyabharathi
- Council of Scientific and Industrial Research (CSIR)-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu, 630003, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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4
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Vo TS, Hoang T, Vo TTBC, Jeon B, Nguyen VH, Kim K. Recent Trends of Bioanalytical Sensors with Smart Health Monitoring Systems: From Materials to Applications. Adv Healthc Mater 2024; 13:e2303923. [PMID: 38573175 DOI: 10.1002/adhm.202303923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/09/2024] [Indexed: 04/05/2024]
Abstract
Smart biosensors attract significant interest due to real-time monitoring of user health status, where bioanalytical electronic devices designed to detect various activities and biomarkers in the human body have potential applications in physical sign monitoring and health care. Bioelectronics can be well integrated by output signals with wireless communication modules for transferring data to portable devices used as smart biosensors in performing real-time diagnosis and analysis. In this review, the scientific keys of biosensing devices and the current trends in the field of smart biosensors, (functional materials, technological approaches, sensing mechanisms, main roles, potential applications and challenges in health monitoring) will be summarized. Recent advances in the design and manufacturing of bioanalytical sensors with smarter capabilities and enhanced reliability indicate a forthcoming expansion of these smart devices from laboratory to clinical analysis. Therefore, a general description of functional materials and technological approaches used in bioelectronics will be presented after the sections of scientific keys to bioanalytical sensors. A careful introduction to the established systems of smart monitoring and prediction analysis using bioelectronics, regarding the integration of machine-learning-based basic algorithms, will be discussed. Afterward, applications and challenges in development using these smart bioelectronics in biological, clinical, and medical diagnostics will also be analyzed. Finally, the review will conclude with outlooks of smart biosensing devices assisted by machine learning algorithms, wireless communications, or smartphone-based systems on current trends and challenges for future works in wearable health monitoring.
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Affiliation(s)
- Thi Sinh Vo
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Trung Hoang
- Department of Biophysics, Sungkyunkwan University, Suwon, 16419, South Korea
- Institute of Quantum Biophysics, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Tran Thi Bich Chau Vo
- Faculty of Industrial Management, College of Engineering, Can Tho University, Can Tho, 900000, Vietnam
| | - Byounghyun Jeon
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Vu Hoang Nguyen
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Kyunghoon Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
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5
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Chen L, Zhao W, Zhang J, Liu M, Jia Y, Wang R, Chai M. Recent Research on Iridium-Based Electrocatalysts for Acidic Oxygen Evolution Reaction from the Origin of Reaction Mechanism. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403845. [PMID: 38940392 DOI: 10.1002/smll.202403845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 06/18/2024] [Indexed: 06/29/2024]
Abstract
As the anode reaction of proton exchange membrane water electrolysis (PEMWE), the acidic oxygen evolution reaction (OER) is one of the main obstacles to the practical application of PEMWE due to its sluggish four-electron transfer process. The development of high-performance acidic OER electrocatalysts has become the key to improving the reaction kinetics. To date, although various excellent acidic OER electrocatalysts have been widely researched, Ir-based nanomaterials are still state-of-the-art electrocatalysts. Hence, a comprehensive and in-depth understanding of the reaction mechanism of Ir-based electrocatalysts is crucial for the precise optimization of catalytic performance. In this review, the origin and nature of the conventional adsorbate evolution mechanism (AEM) and the derived volcanic relationship on Ir-based electrocatalysts for acidic OER processes are summarized and some optimization strategies for Ir-based electrocatalysts based on the AEM are introduced. To further investigate the development strategy of high-performance Ir-based electrocatalysts, several unconventional OER mechanisms including dual-site mechanism and lattice oxygen mediated mechanism, and their applications are introduced in detail. Thereafter, the active species on Ir-based electrocatalysts at acidic OER are summarized and classified into surface Ir species and O species. Finally, the future development direction and prospect of Ir-based electrocatalysts for acidic OER are put forward.
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Affiliation(s)
- Ligang Chen
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Wei Zhao
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Juntao Zhang
- Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology, School of Materials Science and Engineering, Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng, 475004, China
| | - Min Liu
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Yin Jia
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
| | - Ruzhi Wang
- Institute of Advanced Energy Materials and Devices, College of Material Science and Engineering; Key Laboratory of Advanced Functional Materials of Education Ministry of China, Beijing University of Technology, Beijing, 100124, China
| | - Maorong Chai
- State Power Investment Corporation Hydrogen Energy Company, Limited, Beijing, 102600, China
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6
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Wang Q, Wang S, Han X, Guo X, Huang H, Kang K, Zhao P, Xie S. Wet-Chemical Synthesis of Concave Hexoctahedral Pd and Pd@Pt Nanocrystals for Methanol Electrooxidation. Inorg Chem 2024; 63:11424-11430. [PMID: 38841806 DOI: 10.1021/acs.inorgchem.4c01540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Nanocrystals (NCs) exposed with high-index facets usually show enhanced electrocatalytic performances. However, it is a great challenge to persevere with high-index facets against their high surface energy during the synthesis. Herein, we successfully synthesize concave hexoctahedral (c-HOH) Pd NCs exposed with 48 high-index {741} facets using a facile one-pot wet-chemical protocol. Control experiments illustrate that l-ascorbic acid plays a critical role in the formation of the c-HOH morphology, acting as both reducing and capping agents. Moreover, we can extend the synthesis for fabricating c-HOH Pd@Pt core-shell NCs by simply introducing a Pt precursor into the reaction solution, attaining remarkably boosted electrocatalysis for methanol electrooxidation reaction (MOR). Integrating the merits of {741} facets, concave structure, and ligand and strain effect of the core-shell structure, c-HOH Pd4@Pt1 core-shell NCs showed an excellent MOR mass activity of 1.18 A mgPGM-1 or 3.60 A mgPt-1, which is 3.80 or 11.61 times higher than that of commercial Pt/C, respectively.
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Affiliation(s)
- Qiuxiang Wang
- Instrumental Analysis Center, Huaqiao University, Xiamen 361021, China
| | - Shupeng Wang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Xiao Han
- Key Laboratory of Functional Materials and Applications of Fujian Province, Institute of Advanced Energy Materials, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China
| | - Xiaohua Guo
- Instrumental Analysis Center, Huaqiao University, Xiamen 361021, China
| | - Hongpu Huang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Kai Kang
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Peng Zhao
- Instrumental Analysis Center, Huaqiao University, Xiamen 361021, China
| | - Shuifen Xie
- Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
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7
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Li Y, Yang J, Liu F, Shi C, Zhu E, Yin S, Yu J, Xu M. Evolution of High-Index Facets Pt Nanocrystals Induced by N-Defective Sites in the Integrated Electrode for Enhanced Methanol Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309457. [PMID: 38150624 DOI: 10.1002/smll.202309457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/10/2023] [Indexed: 12/29/2023]
Abstract
Highly efficient and durable Pt electrocatalysts are the key to boost the performance of fuel cells. The high-index facets (HIF) Pt nanocrystals are regarded as excellent catalytic activity and stability catalysts. However, nucleation, growth and evolution of high-index facets Pt nanocrystals induced by defective sites is still a challenge. In this work, tetrahexahedron (THH) and hexactahedron (HOH) Pt nanocrystals are synthesized, which are loaded on the nitrogen-doped reduced graphene oxide (N-rGO) support of the integrated electrodes by the square wave pulse method. Experimental investigations and density functional theory (DFT) calculations are conducted to analyze the growth and evolution mechanism of HIF Pt nanocrystals on the graphene-derived carbon supports. It shows that the H adsorption on the N-rGO/CFP support can induce evolution of Pt nanocrystals. Moreover, the N-defective sites on the surface of N-rGO can lead to a slower growth of Pt nanocrystals than that on the surface of reduced graphene oxide (rGO). Pt/N-rGO/CFP (20 min) shows the highest specific activity in methanol oxidation, which is 1.5 times higher than that of commercial Pt/C. This research paves the way on the design and synthesis of HIF Pt nanocrystal using graphene-derived carbon materials as substrates in the future.
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Affiliation(s)
- Yuhui Li
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
- National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Kunming, 650093, China
| | - Jirong Yang
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
- National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Kunming, 650093, China
| | - Feng Liu
- Yunnan Precious Metals Laboratory, Kunming, 650100, China
| | - Chaoyang Shi
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
- National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Kunming, 650093, China
| | - Enze Zhu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
- National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Kunming, 650093, China
| | - Shubiao Yin
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Jie Yu
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Mingli Xu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
- National and Local Joint Engineering Research Center for Lithium-ion Batteries and Materials Preparation Technology, Kunming, 650093, China
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8
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Wang X, Huang C, Xia C, Qin F, Zhu G, Mao L, Ma Y, Shi Z, Cui Q, Xu C. Doped microspheres for Whispering Gallery Mode microlasing. Sci Bull (Beijing) 2024:S2095-9273(24)00345-1. [PMID: 38796343 DOI: 10.1016/j.scib.2024.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/07/2024] [Accepted: 05/13/2024] [Indexed: 05/28/2024]
Affiliation(s)
- Xiaoxuan Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Chaoyang Huang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Chuansheng Xia
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Feifei Qin
- Peter Grünberg Research Centre, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
| | - Gangyi Zhu
- Peter Grünberg Research Centre, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
| | - Lingfeng Mao
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yi Ma
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Zengliang Shi
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
| | - Qiannan Cui
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
| | - Chunxiang Xu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China; School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China.
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9
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Ye Z, Shen B, Kang D, Huang J, Wang Z, Wahl CB, Shin D, Huang L, Shen J, Wolverton CM, Mirkin CA. Using Surface Composition and Energy to Control the Formation of Either Tetrahexahedral or Hexoctahedral High-Index Facet Nanostructures. J Am Chem Soc 2024; 146:13519-13526. [PMID: 38701368 DOI: 10.1021/jacs.4c03088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
High-index facet nanoparticles with structurally complex shapes, such as tetrahexahedron (THH) and hexoctahedron (HOH), represent a class of materials that are important for catalysis, and the study of them provides a fundamental understanding of the relationship between surface structures and catalytic properties. However, the high surface energies render them thermodynamically unfavorable compared to low-index facets, thereby making their syntheses challenging. Herein, we report a method to control the shape of high-index facet Cu nanoparticles (either THH with {210} facets or HOH with {421} facets) by tuning the facet surface energy with trace amounts of Te atoms. Density functional theory (DFT) calculations reveal that the density of Te atoms on Cu nanoparticles can change the relative stability of the high-index facets associated with either the THH or HOH structures. By controlling the annealing conditions and the rate of Te dealloying from CuTe nanoparticles, the surface density of Te atoms can be deliberately adjusted, which can be used to force the formation of either THH (higher surface Te density) or HOH (lower surface Te density) nanoparticles.
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Affiliation(s)
- Zihao Ye
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Bo Shen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Dohun Kang
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jin Huang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Zhe Wang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Carolin B Wahl
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Donghoon Shin
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Liliang Huang
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jiahong Shen
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Christopher M Wolverton
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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10
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Tang M, Sun M, Chen W, Ding Y, Fan X, Wu X, Fu XZ, Huang B, Luo S, Luo JL. Atomic Diffusion Engineered PtSnCu Nanoframes with High-Index Facets Boost Ethanol Oxidation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311731. [PMID: 38267017 DOI: 10.1002/adma.202311731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/13/2024] [Indexed: 01/26/2024]
Abstract
Electrochemical ethanol oxidation is crucial to directly convert a biorenewable liquid fuel with high energy density into electrical energy, but it remains an inefficient reaction even with the best catalysts. To boost ethanol oxidation, developing multimetallic nanoalloy has emerged as one of the most effective strategies, yet faces a challenge in the rational engineering of multimetallic active-site ensembles at atomic-level. Herein, starting from typical PtCu nanocrystals, an atomic Sn diffusion strategy is developed to construct well-defined Pt47Sn12Cu41 octopod nanoframes, which is enclosed by high-index facets of n (111)-(111), such as {331} and {221}. Pt47Sn12Cu41 achieves a high mass activity of 3.10 A mg-1 Pt and promotes the C-C bond breaking and oxidation of poisonous CO intermediate, representing a state-of-the-art electrocatalyst toward ethanol oxidation in acidic electrolyte. Density functional theory (DFT) calculations have confirmed that the introduction of Sn improves the electroactivity by uplifting the d-band center through the s-p-d coupling. Meanwhile, the strong binding of ethanol and the reduced energy barrier of CO oxidation guarantee a highly efficient ethanol oxidation process with improved Faradic efficiency of C1 products. This work offers a promising strategy for constructing novel multimetallic nanoalloys tailored by atomic metal sites as the efficient electrocatalysts.
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Affiliation(s)
- Min Tang
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Mingzi Sun
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Wen Chen
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Yutian Ding
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Xiaokun Fan
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Xiaoyu Wu
- The New Energy Automotive Technology Research Institute, Shenzhen Polytechnic University, Shenzhen, 518055, China
| | - Xian-Zhu Fu
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Shuiping Luo
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Jing-Li Luo
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
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11
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An N, Chen T, Zhang J, Wang G, Yan M, Yang S. Rational Electrochemical Design of Cuprous Oxide Hierarchical Microarchitectures and Their Derivatives for SERS Sensing Applications. SMALL METHODS 2024; 8:e2300910. [PMID: 38415973 DOI: 10.1002/smtd.202300910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 01/02/2024] [Indexed: 02/29/2024]
Abstract
Rational morphology control of inorganic microarchitectures is important in diverse fields, requiring precise regulation of nucleation and growth processes. While wet chemical methods have achieved success regarding the shape-controlled synthesis of micro/nanostructures, accurately controlling the growth behavior in real time remains challenging. Comparatively, the electrodeposition technique can immediately control the growth behavior by tuning the overpotential, whereas it is rarely used to design complex microarchitectures. Here, the electrochemical design of complex Cu2O microarchitectures step-by-step by precisely controlling the growth behavior is demonstrated. The growth modes can be switched between the thermodynamic and kinetic modes by varying the overpotential. Cl- ions preferably adhered to {100} facets to modulate growth rates of these facets is proved. The discovered growth modes to prepare Cu2O microarchitectures composed of multiple building units inaccessible with existing methods are employed. Polyvinyl alcohol (PVA) additives can guarantee all pre-electrodeposits simultaneously evolve into uniform microarchitectures, instead of forming undesired microstructures on bare electrode surfaces in following electrodeposition processes is discovered. The designed Cu2O microarchitectures can be converted into noble metal microstructures with shapes unchanged, which can be used as surface-enhanced Raman scattering substrates. An electrochemical avenue toward rational design of complex inorganic microarchitectures is opened up.
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Affiliation(s)
- Ning An
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Tiantian Chen
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Junfeng Zhang
- School of Physics and Information, Shanxi Normal University, Taiyuan, 030031, China
| | - Guanghui Wang
- School of Automotive Engineering, Hubei University of Automotive Technology, Shiyan, 442002, China
| | - Mi Yan
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institution of Rare Earths, Baotou, 014030, China
| | - Shikuan Yang
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institution of Rare Earths, Baotou, 014030, China
- Department of Medical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
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12
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Li Y, Yao Z, Gao W, Shang W, Deng T, Wu J. Nanoscale Design for High Entropy Alloy Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310006. [PMID: 38088529 DOI: 10.1002/smll.202310006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/01/2023] [Indexed: 05/25/2024]
Abstract
Due to their distinctive physical and chemical characteristics, high entropy alloys (HEAs), a class of alloys comprising multiple elements, have garnered a lot of attention. It is demonstrated recently that HEA electrocatalysts increase the activity and stability of several processes. In this paper, the most recent developments in HEA electrocatalysts research are reviewed, and the performance of HEAs in catalyzing key reactions in water electrolysis and fuel cells is summarized. In addition, the design strategies for HEA electrocatalysts optimization is introduced, which include component selection, size optimization, morphology control, structural engineering, crystal phase regulation, and theoretical prediction, which can guide component selection and structural design of HEA electrocatalysts.
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Affiliation(s)
- Yanjie Li
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhenpeng Yao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
- Future Material Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201203, China
| | - Wenpei Gao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Future Material Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201203, China
| | - Wen Shang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tao Deng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
- Future Material Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201203, China
- Materials Genome Initiative Center, Shanghai Jiao Tong University, Shanghai, 200240, China
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13
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Verma E, Choi MH, Kar N, Baker LA, Skrabalak SE. Bridging colloidal and electrochemical syntheses of metal nanocrystals with seeded electrodeposition for tracking single nanocrystal growth. NANOSCALE 2024; 16:8002-8012. [PMID: 38535987 DOI: 10.1039/d4nr00202d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Metal nanocrystals (NCs) produced by colloidal synthesis have a variety of structural features, such as different planes, edges, and defects. Even from the best colloidal syntheses, these characteristics are distributed differently in each NC. This inherent heterogeneity can play a significant role in the properties displayed by NCs. This manuscript reports the use of electrochemistry to synthesize Au NCs in a system evaluated to track individual NC growth trajectories as a first step toward rapid identification of NCs with different structural features. Au nanocubes were prepared colloidally and deposited onto a glassy carbon electrode using either electrospray or an airbrush, resulting in well-spaced Au nanocubes. The Au nanocubes then served as seeds as gold salt was reduced to deposit metal at constant potential. Deposition at constant potential facilitates overgrowth on the Au nanocubes to achieve new NC shapes. The effects of applied potential, deposition time, precursor concentration, and capping agents on NC shape evolution were studied. The outcomes are correlated to results from traditional colloidal syntheses, providing a bridge between the two synthetic strategies. Moreover, scanning electron microscopy was used to image the same NCs before and after deposition, linking individual seed features to differences in deposition. This ability is anticipated to enable tracking of individual growth trajectories of NCs to elucidate sources of heterogeneity in NC syntheses.
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Affiliation(s)
- Ekta Verma
- Department of Chemistry, Indiana University - Bloomington, Bloomington, Indiana, 47405, USA.
| | - Myung-Hoon Choi
- Department of Chemistry, Texas A&M University, College Station, Texas, 77843, USA
| | - Nabojit Kar
- Department of Chemistry, Indiana University - Bloomington, Bloomington, Indiana, 47405, USA.
| | - Lane A Baker
- Department of Chemistry, Texas A&M University, College Station, Texas, 77843, USA
| | - Sara E Skrabalak
- Department of Chemistry, Indiana University - Bloomington, Bloomington, Indiana, 47405, USA.
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14
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Wan J, Sun L, Sun X, Liu C, Yang G, Zhang B, Tao Y, Yang Y, Zhang Q. Cu 2+-Dominated Chirality Transfer from Chiral Molecules to Concave Chiral Au Nanoparticles. J Am Chem Soc 2024; 146:10640-10654. [PMID: 38568727 DOI: 10.1021/jacs.4c00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Foreign ions as additives are of great significance for realizing excellent control over the morphology of noble metal nanostructures in the state-of-the-art seed-mediated growth method; however, they remain largely unexplored in chiral synthesis. Here, we report on a Cu2+-dominated chiral growth strategy that can direct the growth of concave chiral Au nanoparticles with C3-dominant chiral centers. The introduction of trace amounts of Cu2+ ions in the seed-mediated chiral growth process is found to dominate the chirality transfer from chiral molecules to chiral nanoparticles, leading to the formation of chiral nanoparticles with a concave VC geometry. Both experimental and theoretical results further demonstrate the correlation between the nanoparticle structure and optical chirality for the concave chiral nanoparticle. The Cu2+ ion is found to dominate the chiral growth by selectively activating the deposition of Au atoms along the [110] and [111] directions, facilitating the formation of the concave VC. We further demonstrate that the Cu2+-dominated chiral growth strategy can be employed to generate a variety of concave chiral nanoparticles with enriched geometric chirality and desired chiroptical properties. Concave chiral nanoparticles also exhibit appealing catalytic activity and selectivity toward electrocatalytic oxidation of enantiomers in comparison to helicoidal nanoparticles. The ability to tune the geometric chirality in a controlled manner by simply manipulating the Cu2+ ions as additives opens up a promising strategy for creating chiral nanomaterials with increasing architectural diversity for chirality-dependent optical and catalytic applications.
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Affiliation(s)
- Jinling Wan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lichao Sun
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xuehao Sun
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chuang Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Guizeng Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Binbin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yunlong Tao
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yahui Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Qingfeng Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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15
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Dastider A, Saha H, Anik MJF, Jamal M, Billah MM. Second phase Cu 2O boosted photocatalytic activity of fluorine doped CuO nanoparticles. RSC Adv 2024; 14:11677-11693. [PMID: 38605896 PMCID: PMC11007595 DOI: 10.1039/d3ra08790e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 03/30/2024] [Indexed: 04/13/2024] Open
Abstract
The photocatalytic activity of fluorine (F) doped CuO nanoparticles (NPs) prepared employing modified sol-gel process was investigated here in this study. Structural and elemental characterization using XRD and XPS data confirmed successful incorporation of F as dopant. F doping led to lattice distortion and reduced crystallinity with smaller crystallite size while promoting the emergence of Cu2O as the second phase. Morphological analysis showed irregularly shaped, fused particles with a decreasing particle size trend upon doping. Addition of hydrogen peroxide generated hydroxyl radicals (OH˙) under ultra-violet (UV) light, which effectively degrades pollutants by facilitating the photocatalytic kinetics. Photocatalytic activity of all the nanoparticles was examined against Rhodamine B (Rh B) dye and most efficient degradation (97.78%) was observed for 3 mol% F dopant concentration. The emergence of Cu2O phase for doping beyond 1 mol% F doped CuO might be the prime reason to enhance its degradation performance. Conversely, 5 mol% doping caused notable phase changes and decreased degradation rate (88.05%) due to increased recombination rate in presence of metallic copper. The ability of F doped CuO nanoparticles to disintegrate organic contaminants by producing reactive oxygen species when exposed to UV light suggests their potential effectiveness in applications such as dye degradation, water purification, and environmental sustainability.
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Affiliation(s)
- Ankita Dastider
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Hridoy Saha
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Md Jannatul Ferdous Anik
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
| | - Moniruzzaman Jamal
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
- Department of Materials Science and Engineering, University of California Berkeley CA 94720 USA
| | - Md Muktadir Billah
- Department of Materials and Metallurgical Engineering (MME), Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh
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16
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Personick ML, Jallow AA, Halford GC, Baker LA. Nanomaterials Synthesis Discovery via Parallel Electrochemical Deposition. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:3034-3041. [PMID: 38558921 PMCID: PMC10976633 DOI: 10.1021/acs.chemmater.4c00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Electrodeposition of nanoparticles is investigated with a multichannel potentiostat in electrochemical and chemical arrays. De novo deposition and shape control of palladium nanoparticles are explored in arrays with a two-stage strategy. Initial conditions for electrodeposition of materials are discovered in a first stage and then used in a second stage to logically expand chemical and electrochemical parameters. Shape control is analyzed primarily with scanning electron microscopy. Using this approach, optimized conditions for the electrodeposition of cubic palladium nanoparticles were identified from a set of previously untested electrodeposition conditions. The parameters discovered through the array format were then successfully extrapolated to a traditional bulk three-electrode electrochemical cell. Electrochemical arrays were also used to explore electrodeposition parameters reported in previous bulk studies, further demonstrating the correspondence between the array and bulk systems. These results broadly highlight opportunities for electrochemical arrays, both for discovery and for further investigations of electrodeposition in nanomaterials synthesis.
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Affiliation(s)
- Michelle L. Personick
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
- Department
of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Abdoulie A. Jallow
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Gabriel C. Halford
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Lane A. Baker
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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17
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Li Q, Xu C, Luo L, Ge C, Wang Y. Platinum-group-metal quaternary alloys with lattice defects for enhanced oxygen electrocatalysis. Chem Commun (Camb) 2024; 60:3567-3570. [PMID: 38465654 DOI: 10.1039/d3cc06286d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
We propose a facile coreduction method to synthesize a platinum-group-metal quaternary alloy anchored on nitrogen-doped hollow carbon spheres (PtPdRuIr/HCS) by using [MClx]y--1-butyl-3-methylimidazole (M = Pt, Pd, Ru, and Ir) ionic liquid. Owing to the steric hindrance of the imidazolium cations, Pt-group metal atoms of different sizes can be deposited at approximately the same pace for the growth of an alloy with lattice defects. The lattice-distorted PtPdRuIr/HCS exhibits enhanced activity toward oxygen electroreduction when benchmarked against Pt counterparts.
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Affiliation(s)
- Qi Li
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
| | - Chenqi Xu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
| | - Liangmei Luo
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
| | - Cunwang Ge
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
| | - Yanqing Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
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18
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Tung CY, Tsai TT, Chiu PY, Viter R, Ramanavičius A, Yu CJ, Chen CF. Diagnosis of Mycobacterium tuberculosis using palladium-platinum bimetallic nanoparticles combined with paper-based analytical devices. NANOSCALE 2024; 16:5988-5998. [PMID: 38465745 DOI: 10.1039/d3nr05508f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
In this study, we demonstrate that palladium-platinum bimetallic nanoparticles (Pd@Pt NPs) as the nanozyme, combined with a multi-layer paper-based analytical device and DNA hybridization, can successfully detect Mycobacterium tuberculosis. This nanozyme has peroxidase-like properties, which can increase the oxidation rate of the substrate. Compared with horseradish peroxidase, which is widely used in traditional detection, the Michaelis constants of Pd@Pt NPs are fourteen and seventeen times lower than those for 3,3',5,5'-tetramethylbenzidine and H2O2, respectively. To verify the catalytic efficiency of Pd@Pt NPs, this study will execute molecular diagnosis of Mycobacterium tuberculosis. We chose the IS6110 fragment as the target DNA and divided the complementary sequences into the capture DNA and reporter DNA. They were modified on paper and Pd@Pt NPs, respectively, to detect Mycobacterium tuberculosis on a paper-based analytical device. With the above-mentioned method, we can detect target DNA within 15 minutes with a linear range between 0.75 and 10 nM, and a detection limit of 0.216 nM. These results demonstrate that the proposed platform (a DNA-nanozyme integrated paper-based analytical device, dnPAD) can provide sensitive and on-site infection prognosis in areas with insufficient medical resources.
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Affiliation(s)
- Cheng-Yang Tung
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan.
| | - Tsung-Ting Tsai
- Department of Orthopaedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan 333, Taiwan
| | - Ping-Yeh Chiu
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan.
- Department of Orthopaedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan 333, Taiwan
| | - Roman Viter
- Institute of Atomic Physics and Spectroscopy, University of Latvia, Jelgavas Street 3, LV-1004 Riga, Latvia
| | - Arũnas Ramanavičius
- State Research Institute Center for Physical and Technological Sciences, Sauletekio Ave. 3, LT-10257 Vilnius, Lithuania
| | - Cheng-Ju Yu
- Department of Applied Physics and Chemistry, University of Taipei, Taipei 100, Taiwan.
| | - Chien-Fu Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan.
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19
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Zhang X, Liu X, Wu D, Hu L, Zhang H, Sun Z, Qian S, Xia Z, Luo Q, Cao L, Yang J, Yao T. Self-Assembly Intermetallic PtCu 3 Core with High-Index Faceted Pt Shell for High-Efficiency Oxygen Reduction. NANO LETTERS 2024; 24:3213-3220. [PMID: 38426819 DOI: 10.1021/acs.nanolett.4c00111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Rational design of well-defined active sites is crucial for promoting sluggish oxygen reduction reactions. Herein, leveraging the surfactant-oriented and solvent-ligand effects, we develop a facile self-assembly strategy to construct a core-shell catalyst comprising a high-index Pt shell encapsulating a PtCu3 intermetallic core with efficient oxygen-reduction performance. Without undergoing a high-temperature route, the ordered PtCu3 is directly fabricated through the accelerated reduction of Cu2+, followed by the deposition of the remaining Pt precursor onto its surface, forming high-index steps oriented by the steric hindrance of surfactant. This approach results in a high half-wave potential of 0.911 V versus reversible hydrogen electrode, with negligible deactivation even after 15000-cycle operation. Operando spectroscopies identify that this core-shell catalyst facilitates the conversion of oxygen-involving intermediates and ensures antidissolution ability. Theoretical investigations rationalize that this improvement is attributed to reinforced electronic interactions around high-index Pt, stabilizing the binding strength of rate-determining OHads species.
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Affiliation(s)
- Xue Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Xiaokang Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Dan Wu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Longfei Hu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Huijuan Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Zhiguo Sun
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Shiting Qian
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Zhiyuan Xia
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Qiquan Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Linlin Cao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Jinlong Yang
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Tao Yao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei 230026, P. R. China
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20
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Li X, Lou B, Chen X, Wang M, Jiang H, Lin S, Ma Z, Jia M, Han Y, Tian Y, Wu D, Xu W, Li X, Ma C, Shi Z. Deep-blue narrow-band emissive cesium europium bromide perovskite nanocrystals with record high emission efficiency for wide-color-gamut backlight displays. MATERIALS HORIZONS 2024; 11:1294-1304. [PMID: 38168978 DOI: 10.1039/d3mh01631e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Lead halide perovskite nanocrystals (NCs) are highly promising for backlighting display applications due to their high photoluminescence quantum yields (PLQYs) and wide color gamut values. However, the practical applications of blue emitters are limited due to the toxicity of lead, unstable structure, and unsatisfactory PLQY. Herein, we report the successful synthesis of divalent europium-based perovskite CsEuBr3 NCs using a modified hot injection method. By optimizing the reaction conditions, the CsEuBr3 NCs display a deep-blue emission at 443 nm with a full width at half maximum (FWHM) of 28.5 nm, a color purity of 99.61%, and a record high PLQY of 93.51% for deep-blue narrow-band emissive lead-free perovskite NCs as far as we know. The emission mechanism of CsEuBr3 NCs is proved through first-principles calculations and spectral analysis. Notably, the CsEuBr3 NCs exhibit remarkable stability when exposed to high temperature, UV irradiation, and long-term sealed storage. The incorporation of CsEuBr3 NCs into polydimethylsiloxane (PDMS) serving as a converter is utilized for white light-emitting devices (WLEDs). WLEDs for backlight displays achieves a wide color gamut of 127.1% of the National Television System Committee standard (NTSC), 94.9% coverage of the ITU-R Recommendation BT.2020 (Rec.2020), and their half-lifetime is up to 1677 h, providing a promising pathway for highly efficient, environment-friendly and practical liquid crystal display backlights.
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Affiliation(s)
- Xu Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Bibo Lou
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Xu Chen
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Meng Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Huifang Jiang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Shuailing Lin
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Zhuangzhuang Ma
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Mochen Jia
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yanbing Han
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yongtao Tian
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Di Wu
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
| | - Xinjian Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Chonggeng Ma
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Zhifeng Shi
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
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21
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Lai Q, Niu Q, Zhang C, Reis NM, Long M, Wang F, Liu Z. Integrated Cu-Au stereo microelectrode arrays and microfluidic channels for the electrochemical detection of glucose. Food Chem 2024; 432:137229. [PMID: 37633136 DOI: 10.1016/j.foodchem.2023.137229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 08/15/2023] [Accepted: 08/19/2023] [Indexed: 08/28/2023]
Abstract
Noble and transition metal nanomaterials are widely used in glucose sensing. However, the fabrication of these sensors still suffers from complex nanomaterial synthesis process and unstable nanomaterial loading on sensing surfaces. Herein, a Cu-Au bimetallic microelectrode array was prepared via local electrochemical deposition and electrochemical reduction without the need for templates and additional nanomaterial preparation processes. Based on the COMSOL computational fluid study, the obtained microelectrode arrays combined with microfluidic channels allow the continuous and rapid detection of glucose. Large number of active sites on the surface of 3D nano-arrays contributes to excellent sensing performance for glucose, with good linear detection ranges in 10 µM to 4 × 102 µM and 4 × 102 µM to 4 × 105 µM, and a low detection limit of 284 nM. The feasibility of sensor in real sample was verified by detecting glucose in beverages with good recoveries ranging from 95.50% to 104.31%.
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Affiliation(s)
- Qingteng Lai
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China; Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan 250033, China
| | - Qibin Niu
- State Key Laboratory of High Performance Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Chi Zhang
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Nuno M Reis
- Department of Chemical Engineering and Centre for Biosensors, Bioelectronics and Biodevices (C3Bio), University of Bath, Claverton Down, Bath BA27AY, UK
| | - Mengqiu Long
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China
| | - Fuliang Wang
- State Key Laboratory of High Performance Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Zhengchun Liu
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.
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22
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Huang L, Wu H, Cai G, Wu S, Li D, Jiang T, Qiao B, Jiang C, Ren F. Recent Progress in the Application of Ion Beam Technology in the Modification and Fabrication of Nanostructured Energy Materials. ACS NANO 2024; 18:2578-2610. [PMID: 38214965 DOI: 10.1021/acsnano.3c07896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
The development of green, renewable energy conversion and storage systems is an urgent task to address the energy crisis and environmental issues in the future. To achieve high performance, stable, and safe operation of energy conversion and storage systems, energy materials need to be modified and fabricated through rationalization. Among various modification and fabrication strategies, ion beam technology has been widely used to introduce various defects/dopants into energy materials and fabricate various nanostructures, where the structure, composition, and property of prefabricated materials can be further accurately tailored to achieve better performance. In this paper, we review the recent progress in the application of ion beam technology in material modification and fabrication, focusing on nanostructured energy materials for energy conversion and storage including photo- (electro-) water splitting, batteries (solar cells, fuel cells, and metal-ion batteries), supercapacitors, thermoelectrics, and hydrogen storage. This review first provides a brief basic overview of ion beam technology and describes the classification and technological advantages of ion beam technology in the modification and fabrication of materials. Then, modification of energy materials by ion beams is reviewed mainly concerning doping and defect introduction. Fabrication of energy materials is also discussed mainly in terms of heterojunctions, nanoparticles, nanocavities, and other nanostructures. In particular, we emphasize the advantages of ion beam technology in improving the performance of energy materials. Finally, we point out our understanding of challenges and future perspectives in applying ion beam technology for the modification and fabrication of energy materials.
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Affiliation(s)
- Liqiu Huang
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Hengyi Wu
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Guangxu Cai
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Shixin Wu
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Derun Li
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Tao Jiang
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Biyan Qiao
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Changzhong Jiang
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
| | - Feng Ren
- School of Physics and Technology, Center for Ion Beam Application, Hubei Key Laboratory of Nuclear Solid Physics, Wuhan University, Wuhan 430072, China
- Center for Electron Microscopy, and MOE Key Laboratory of Artificial Micro- and Nano-Structures, Wuhan University, Wuhan 430072, China
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23
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Huang Z, Li F, Liu Y, Chen S, Wei Z, Tang Q. The role of nitrogen sources and hydrogen adsorption on the dynamic stability of Fe-N-C catalysts in oxygen reduction reaction. Chem Sci 2024; 15:1132-1142. [PMID: 38239677 PMCID: PMC10793592 DOI: 10.1039/d3sc05378d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/15/2023] [Indexed: 01/22/2024] Open
Abstract
Fe-N-C catalysts are promising alternatives to Pt-based electrocatalysts for the oxygen reduction reaction (ORR) in various electrochemical applications. However, their practical implementation is impeded by their instability during prolonged operation. Various degradation mechanisms have been proposed, yet the real origin of the intrinsic instability of Fe-N-C structures under ORR operations is still disputed. Herein, we observed a new type of protonation mechanism based on advanced first-principles simulations and experimental characterizations. The results revealed strong evidence of pyrrolic-N protonation in pyrrolic-type FeN4, which plays a vital role for the low kinetic barrier of Fe leaching. Conversely, the pyridinic-type FeN4 prefers protonation at the Fe site, contributing to the higher barrier of Fe leaching and relatively higher stability. The facile pyrrolic-N protonation is verified by various spectroscopy characterizations in the Nafion-treated FePc molecule. Crucially, the presence of oxygen-containing intermediates at the Fe site can further work synergistically with N protonation to promote conversion of iron atoms (Fe-N4) into ferric oxide under working potentials, and the more positive the electrode potential, the lower the kinetic barrier of Fe leaching. These findings serve as a foundation for future research endeavors on the stability issues of Fe-N-C catalysts and advancing their application in sustainable energy conversion technologies.
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Affiliation(s)
- Zhou Huang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
| | - Fuhua Li
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
| | - Yongduo Liu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
| | - Siguo Chen
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
| | - Zidong Wei
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
| | - Qing Tang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University Chongqing 401331 China
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24
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Li X, Yang G, Zhang Q, Liu Z, Peng F. Alkali Metal Cation-Sulfate Anion Ion Pairs Promoted the Cleavage of C-C Bond During Ethanol Electrooxidation. J Phys Chem Lett 2023:11177-11182. [PMID: 38055448 DOI: 10.1021/acs.jpclett.3c02569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Direct ethanol fuel cells show great promise as a means of converting biomass ethanol derived from biomass into electricity. However, the efficiency of complete conversion is hindered by the low selectivity in breaking the C-C bond. This selectivity is determined by factors such as the material structure and reaction conditions, including the nature of the supporting electrolyte. Cations serve not only as facilitators of electricity conduction through ion migration but also as influencers of the reaction pathways. In this study, we utilized differential electrochemical mass spectrometry to track the in situ generation of CO2 during potential scanning. The presence of alkali cations led to an enhancement in the CO2 selectivity. In addition, in situ Raman spectroscopy provided evidence of the formation of alkali metal cation-sulfate anion ion pairs. The catalytic activity and CO2 selectivity were found to be directly correlated to the ionic strength of these ion pairs.
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Affiliation(s)
- Xiang Li
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Guangxing Yang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Qiao Zhang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhiting Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Feng Peng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
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25
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Maity M, Maity R, Sarkar T, Bhakat A, Brandao P, Maity T, Das P, Sarkar K, Samanta BC. In Vitro Insight on Antifungal-Specific Potentiality of Ni(II) Complex against Colletotrichum siamense and Fusarium equisetum Phytopathogens. ACS APPLIED BIO MATERIALS 2023; 6:4836-4845. [PMID: 37935574 DOI: 10.1021/acsabm.3c00590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
In an initiation to investigate a prospective bioactive compound, a mononuclear Ni(II) complex with N, N, and O donor Schiff base ligand was synthesized and characterized in the present study through FTIR, ESI-mass, and X-ray crystallographic diffraction studies. A slightly distorted octahedral geometry has been obtained for the Ni(II) complex from X-ray crystallographic diffraction studies. In vitro comprehensive biological studies show the antifungal specific efficiency of the complex against Colletotrichum siamense (AP1) and Fusarium equisetum (F.E.) pathogens, which are responsible for anthracnose and wilt disease, respectively, but no inhibitory effect on both Gram-positive and Gram-negative bacteria. The minimum inhibitory concentration (MIC) for these pathogens was observed to be 0.25 and 0.5 mM, respectively. The experiment also reveals that significant damage of mycelia and enlarged, misshaped damaged spores are noticed in comparison to hexaconazole, used as a positive control under a light microscope post 48 h treatment of AP1 and F.E. with the MIC of the complex. The binding interaction studies of the complex with DNA and BSA performed through a variety of spectroscopic techniques demonstrate a strong binding behavior of the complex for both the binding systems. The observed negative ΔH° and ΔS° values for DNA reveal the existence of hydrogen-bonding/van der Waals interactions for DNA which was also exemplified from the molecular docking and self-assembly studies of the complex. The positive ΔH° and ΔS° values for BSA demonstrate the hydrophobic interactions of the complex with BSA. However, cytotoxicity studies against the MDA-MB-231 breast cancer cell line did not demonstrate any significant potentiality of the complex as an anticancer agent. All the bio-experimental studies provide clear evidence that the synthesized Ni(II) complex exhibits potential antifungal activity and could be used as a therapeutic fungicide agent in comparison to hexaconazole in agricultural practices.
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Affiliation(s)
- Minakshi Maity
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur, 721425 West Bengal, India
| | - Ribhu Maity
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur, 721425 West Bengal, India
| | - Tuhin Sarkar
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, 741235 West Bengal, India
| | - Ankika Bhakat
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, 741235 West Bengal, India
| | - Paula Brandao
- Departamento de Química/CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur, 721401 West Bengal, India
| | - Priyanka Das
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, 741235 West Bengal, India
| | - Keka Sarkar
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, 741235 West Bengal, India
| | - Bidhan Chandra Samanta
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur, 721425 West Bengal, India
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26
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Franzén SM, Jönsson L, Ternero P, Kåredal M, Eriksson AC, Blomberg S, Hübner JM, Messing ME. Compositional tuning of gas-phase synthesized Pd-Cu nanoparticles. NANOSCALE ADVANCES 2023; 5:6069-6077. [PMID: 37941940 PMCID: PMC10628985 DOI: 10.1039/d3na00438d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/05/2023] [Indexed: 11/10/2023]
Abstract
Bimetallic nanoparticles have gained significant attention in catalysis as potential alternatives to expensive catalysts based on noble metals. In this study, we investigate the compositional tuning of Pd-Cu bimetallic nanoparticles using a physical synthesis method called spark ablation. By utilizing pure and alloyed electrodes in different configurations, we demonstrate the ability to tailor the chemical composition of nanoparticles within the range of approximately 80 : 20 at% to 40 : 60 at% (Pd : Cu), measured using X-ray fluorescence (XRF) and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDXS). Time-resolved XRF measurements revealed a shift in composition throughout the ablation process, potentially influenced by material transfer between electrodes. Powder X-ray diffraction confirmed the predominantly fcc phase of the nanoparticles while high-resolution TEM and scanning TEM-EDXS confirmed the mixing of Pd and Cu within individual nanoparticles. X-ray photoelectron and absorption spectroscopy were used to analyze the outermost atomic layers of the nanoparticles, which is highly important for catalytic applications. Such comprehensive analyses offer insights into the formation and structure of bimetallic nanoparticles and pave the way for the development of efficient and affordable catalysts for various applications.
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Affiliation(s)
- Sara M Franzén
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Linnéa Jönsson
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Pau Ternero
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Monica Kåredal
- Occupational and Environmental Medicine, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Axel C Eriksson
- Ergonomics and Aerosol Technology, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Sara Blomberg
- Department of Chemical Engineering, Lund University Lund Sweden
| | | | - Maria E Messing
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
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27
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Pimu S, Yodsin N, Maneewan S, Kanthachan J, Namuangruk S, Kongpatpanich K. Impact of exposed crystal facets on oxygen reduction reaction activity in zeolitic imidazole frameworks. Dalton Trans 2023; 52:15377-15383. [PMID: 37615038 DOI: 10.1039/d3dt02172f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
ZIF-67 is a representative type of metal-organic framework (MOF) developed for the oxygen reduction reaction (ORR) owing to its robust structure in alkaline electrolytes and the presence of the redox-active Co2+ species in the structure. In this work, the improvement of the ORR electrolytic performance of ZIF-67 in its pure phase by optimization of its crystal morphology and crystal facets has been presented. ZIF-67 nanocubes exhibit higher ORR activity than their bulk crystals. The enriched (100) facet in the nanocube crystals provides a higher number of exposed Co2+ sites resulting in improved ORR performances. Moreover, DFT study suggests a distinguished mechanism in the (100) facet highlighting the importance of crystal facets in electrochemical performances.
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Affiliation(s)
- Sorawich Pimu
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand.
| | - Nuttapon Yodsin
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Sirawee Maneewan
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand.
| | - Jaruwan Kanthachan
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand.
| | - Supawadee Namuangruk
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Kanokwan Kongpatpanich
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong, 21210, Thailand.
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28
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Hermann KE. Nanoparticles with cubic symmetry: classification of polyhedral shapes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 36:045303. [PMID: 37813105 DOI: 10.1088/1361-648x/ad0191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/09/2023] [Indexed: 10/11/2023]
Abstract
Structural studies of polyhedral bodies can help to analyze geometric details of observed crystalline nanoparticles (NP) where we consider compact polyhedra of cubic point symmetry as simple models. Their surfaces are described by facets with normal vectors along selected Cartesian directions (a, b, c) together with their symmetry equivalents forming a direction family {abc}. Here we focus on polyhedra with facets of families {100}, {110}, and {111}, suggested for metal and oxide NPs with cubic lattices. Resulting generic polyhedra, cubic, rhombohedral, octahedral, and tetrahexahedral, have been observed as NP shapes by electron microscopy. They can serve for a complete description of non-generic polyhedra as intersections of corresponding generic species, not studied by experiment so far. Their structural properties are shown to be fully determined by only three parameters, facet distancesR100,R110, andR111of the three facet types. This provides a novel phase diagram to systematically classify all corresponding polyhedra. Their structural properties, such as shape, size, and facet geometry, are discussed in analytical and numerical detail with visualization of typical examples. The results may be used for respective NP simulations but also as a repository stimulating the structural interpretation of new NP shapes to be observed by experiment.
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Affiliation(s)
- Klaus E Hermann
- Theory Department, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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29
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Wang X, Yi ZY, Wang YQ, Wang D, Wan LJ. Unraveling the Dynamic Processes of Methanol Electrooxidation at Isolated Rhodium Sites by In Situ Electrochemical Scanning Tunneling Microscopy. J Phys Chem Lett 2023; 14:9448-9455. [PMID: 37830902 DOI: 10.1021/acs.jpclett.3c02514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Materials with isolated single-atom Rh-N4 sites are emerging as promising and compelling catalysts for methanol electrooxidation. Herein, we carried out an in situ electrochemical scanning tunneling microscopy (ECSTM) investigation of the dynamic processes of methanol absorption and catalytic conversion in the rhodium octaethylporphyrin (RhOEP)-catalyzed methanol oxidation reaction at the molecular scale. The high-contrast RhOEP-CH3OH complex formed by methanol adsorption was visualized distinctly in the STM images. The Rh-C adsorption configuration of methanol on isolated rhodium sites was identified on the basis of a series of control experiments and theoretical simulation. The adsorption energy of methanol on RhOEP was obtained from quantitative analysis. In situ ECSTM experiments present an explicit description of the transformation of the intermediate species in the catalytic process. By qualitatively evaluating the rate constants of different stages in the reaction at the microscopic level, we considered the CO transformation/desorption as the critical step for determining the reaction dynamics. Methanol adsorption was found to be correlated with RhOEP oxidation in the initial stage of the reaction, and the dynamic information was revealed unambiguously by in situ potential step experiments. This work provides microscopic results for the catalytic mechanism of Rh-N4 sites for methanol electrooxidation, which is instructive for the rational design of the high-performance catalyst.
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Affiliation(s)
- Xiang Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhen-Yu Yi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Qi Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Jun Wan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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30
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Lee M, Kim T, Jang W, Lee S, So JP, Jang G, Choi S, Kim S, Bae J, Kim T, Park HG, Moon J, Soon A, Shim W. Nontypical Wulff-Shape Silicon Nanosheets with High Catalytic Activity. J Am Chem Soc 2023; 145:22620-22632. [PMID: 37799086 DOI: 10.1021/jacs.3c07768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Nanostructured silicon with an equilibrium shape has exhibited hydrogen evolution reaction activity mainly owing to its high surface area, which is distinct from that of bulk silicon. Such a Wulff shape of silicon favors low-surface-energy planes, resulting in silicon being an anisotropic and predictably faceted solid in which certain planes are favored, but this limits further improvement of the catalytic activity. Here, we introduce nanoporous silicon nanosheets that possess high-surface-energy crystal planes, leading to an unconventional Wulff shape that bolsters the catalytic activity. The high-index plane, uncommonly seen in the Wulff shape of bulk Si, has a band structure optimally aligned with the redox potential necessary for hydrogen generation, resulting in an apparent quantum yield (AQY) of 12.1% at a 400 nm wavelength. The enhanced light absorption in nanoporous silicon nanosheets also contributes to the high photocatalytic activity. Collectively, the strategy of making crystals with nontypical Wulff shapes can provide a route toward various classes of photocatalysts for hydrogen production.
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Affiliation(s)
- Minwoo Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Taehoon Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Woosun Jang
- Integrated Science and Engineering Division, Underwood International College, Yonsei University, Incheon 21983, Republic of Korea
| | - Sangseob Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jae-Pil So
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Gyumin Jang
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Sangjin Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungsoon Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Jihong Bae
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Taeyoung Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
| | - Hong-Gyu Park
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Jooho Moon
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Aloysius Soon
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Wooyoung Shim
- Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Yonsei IBS Institute, Yonsei University, Seoul 08826, Republic of Korea
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31
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Martins da Silva AY, Arouche TDS, Siqueira MRS, Ramalho TC, de Faria LJG, Gester RDM, Carvalho Junior RND, Santana de Oliveira M, Neto AMDJC. SARS-CoV-2 external structures interacting with nanospheres using docking and molecular dynamics. J Biomol Struct Dyn 2023:1-16. [PMID: 37712854 DOI: 10.1080/07391102.2023.2252930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 08/22/2023] [Indexed: 09/16/2023]
Abstract
Coronavirus is caused by the SARS-CoV-2 virus has shown rapid proliferation and scarcity of treatments with proven effectiveness. In this way, we simulated the hospitalization of carbon nanospheres, with external active sites of the SARS-CoV-2 virus (M-Pro, S-Gly and E-Pro), which can be adsorbed or inactivated when interacting with the nanospheres. The computational procedures performed in this work were developed with the SwissDock server for molecular docking and the GROMACS software for molecular dynamics, making it possible to extract relevant data on affinity energy, distance between molecules, free Gibbs energy and mean square deviation of atomic positions, surface area accessible to solvents. Molecular docking indicates that all ligands have an affinity for the receptor's active sites. The nanospheres interact favorably with all proteins, showing promising results, especially C60, which presented the best affinity energy and RMSD values for all protein macromolecules investigated. The C60 with E-Pro exhibited the highest affinity energy of -9.361 kcal/mol, demonstrating stability in both molecular docking and molecular dynamics simulations. Our RMSD calculations indicated that the nanospheres remained predominantly stable, fluctuating within a range of 2 to 3 Å. Additionally, the analysis of other structures yielded promising results that hold potential for application in other proteases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Anderson Yuri Martins da Silva
- Laboratory for the Preparation and Computation of Nanomaterials (LPCN), Federal University of Pará, Belem, Brazil
- Graduated in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
- Postgraduate Program in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
| | - Tiago da Silva Arouche
- Laboratory for the Preparation and Computation of Nanomaterials (LPCN), Federal University of Pará, Belem, Brazil
- Graduated in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
| | | | - Teodorico Castro Ramalho
- Postgraduate Program in Engineering of Natural Resources of the Amazon, ITEC, Federal University of Pará, Belém, Brazil
| | | | - Rodrigo do Monte Gester
- Institute of Exact Sciences (ICE), Federal University of the South and Southeast of Pará, Maraba, Brazil
| | - Raul Nunes de Carvalho Junior
- Postgraduate Program in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
- Postgraduate Program in Engineering of Natural Resources of the Amazon, ITEC, Federal University of Pará, Belém, Brazil
- Faculty of Food Engineering ITEC, Federal University of Pará, Belém, Brazil
| | | | - Antonio Maia de Jesus Chaves Neto
- Laboratory for the Preparation and Computation of Nanomaterials (LPCN), Federal University of Pará, Belem, Brazil
- Graduated in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
- Postgraduate Program in Chemical Engineering, ITEC, Federal University of Pará, Belém, Brazil
- National Professional Master's in Physics Teaching, Federal University of Pará, Belém, Brazil
- Museu Paraense Emílio Goeldi, Diretoria, Coordenação de Botânica, Rua Augusto Corrêa, Belém, Brazil
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32
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Ding C, Niu M, Cassidy C, Kang HB, Ono LK, Wang H, Tong G, Zhang C, Liu Y, Zhang J, Mariotti S, Wu T, Qi Y. Local Built-In Field at the Sub-nanometric Heterointerface Mediates Cascade Electrochemical Conversion of Lithium-sulfur Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301755. [PMID: 37144439 DOI: 10.1002/smll.202301755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/12/2023] [Indexed: 05/06/2023]
Abstract
Heterogeneous catalytic mediators have been proposed to play a vital role in enhancing the multiorder reaction and nucleation kinetics in multielectron sulfur electrochemistry. However, the predictive design of heterogeneous catalysts is still challenging, owing to the lack of in-depth understanding of interfacial electronic states and electron transfer on cascade reaction in Li-S batteries. Here, a heterogeneous catalytic mediator based on monodispersed titanium carbide sub-nanoclusters embedded in titanium dioxide nanobelts is reported. The tunable catalytic and anchoring effects of the resulting catalyst are achieved by the redistribution of localized electrons caused by the abundant built-in fields in heterointerfaces. Subsequently, the resulting sulfur cathodes deliver an areal capacity of 5.6 mAh cm-2 and excellent stability at 1 C under sulfur loading of 8.0 mg cm-2 . The catalytic mechanism especially on enhancing the multiorder reaction kinetic of polysulfides is further demonstrated via operando time-resolved Raman spectroscopy during the reduction process in conjunction with theoretical analysis.
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Affiliation(s)
- Chenfeng Ding
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Mang Niu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - Cathal Cassidy
- Quantum Wave Microscopy Unit, Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Hyung-Been Kang
- Engineering Section, Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Luis K Ono
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Hengyuan Wang
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Guoqing Tong
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Congyang Zhang
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Yuan Liu
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China
- Foshan (Southern China) Institute for New Materials, Foshan, 528200, China
| | - Jiahao Zhang
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Silvia Mariotti
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Tianhao Wu
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
| | - Yabing Qi
- Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), 1919-1 Tancha, Kunigami-gun, Onna-son, Okinawa, 904-0495, Japan
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Liu M, Zhou S, Choi SI, Xia Y. Deterministic Synthesis of Pd Nanocrystals Enclosed by High-Index Facets and Their Enhanced Activity toward Formic Acid Oxidation. PRECISION CHEMISTRY 2023; 1:372-381. [PMID: 37654808 PMCID: PMC10467563 DOI: 10.1021/prechem.3c00060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 09/02/2023]
Abstract
Noble-metal nanocrystals enclosed by high-index facets are of growing interest due to their enhanced catalytic performance in a variety of reactions. Herein, we report the deterministic synthesis of Pd nanocrystals encased by high-index facets by controlling the rate of deposition (Vdeposition) relative to that of surface diffusion (Vdiffusion). For octahedral seeds with truncated corners, a reduction rate (and thus deposition rate) faster than that of surface diffusion (i.e., Vdeposition/Vdiffusion > 1) led to the formation of concave trisoctahedra (TOH) with high-index facets. When the reduction was slowed down, in contrast, surface diffusion dominated the growth pathway. In the case of Vdeposition/Vdiffusion ≈ 1, truncated octahedra with enlarged sizes were produced. When the reduction rate was between these two extremes, we obtained concave tetrahexahedra (THH) without or with truncation. Similar growth patterns were also observed for the cuboctahedral seeds. When the Pd octahedra, concave TOH, and concave THH were tested for electrocatalyzing the formic acid oxidation (FAO) reaction, those with high-index facets were advantageous over the conventional Pd octahedra enclosed by {111} facets. This work not only contributes to the understanding of surface diffusion and its role in nanocrystal growth but also offers a general protocol for the synthesis of nanocrystals enclosed by high-index facets.
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Affiliation(s)
- Maochang Liu
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- International
Research Center for Renewable Energy, State Key Laboratory of Multiphase
Flow, Xi’an Jiaotong University, Xi’an, Shanxi 710049, P. R. China
| | - Siyu Zhou
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Sang-Il Choi
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Younan Xia
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
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34
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Yan W, Li G, Cui S, Park GS, Oh R, Chen W, Cheng X, Zhang JM, Li W, Ji LF, Akdim O, Huang X, Lin H, Yang J, Jiang YX, Sun SG. Ga-Modification Near-Surface Composition of Pt-Ga/C Catalyst Facilitates High-Efficiency Electrochemical Ethanol Oxidation through a C2 Intermediate. J Am Chem Soc 2023; 145:17220-17231. [PMID: 37492900 DOI: 10.1021/jacs.3c04320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
In electrochemical ethanol oxidation reactions (EOR) catalyzed by Pt metal nanoparticles through a C2 route, the dissociation of the C-C bond in the ethanol molecule can be a limiting factor. Complete EOR processes producing CO2 were always exemplified by the oxidative dehydrogenation of C1 intermediates, a reaction route with less energy utilization efficiency. Here, we report a Pt3Ga/C electrocatalyst with a uniform distribution of Ga over the nanoparticle surface for EOR that produces CO2 at medium potentials (>0.3 V vs SCE) efficiently through direct and sustainable oxidation of C2 intermediate species, i.e., acetaldehyde. We demonstrate the excellent performance of the Pt3Ga-200/C catalyst by using electrochemical in situ Fourier transform infrared reflection spectroscopy (FTIR) and an isotopic labeling method. The atomic interval structure between Pt and Ga makes the surface of nanoparticles nonensembled, avoiding the formation of poisonous *CHx and *CO species via bridge-type adsorption of ethanol molecules. Meanwhile, the electron redistribution from Ga to Pt diminishes the *O/*OH adsorption and CO poisoning on Pt atoms, exposing more available sites for interaction with the C2 intermediates. Furthermore, the dissociation of H2O into *OH is facilitated by the high hydrophilicity of Ga, which is supported by DFT calculations, promoting the deep oxidation of C2 intermediates. Our work represents an extremely rare EOR process that produces CO2 without observing kinetic limitations under medium potential conditions.
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Affiliation(s)
- Wei Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Guang Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Shuangshuang Cui
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Gyeong-Su Park
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Rena Oh
- Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Weixin Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xiaoyang Cheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Jun-Ming Zhang
- Shaanxi Normal University Key Laboratory of Magnetic Molecules & Magnetic Information Materials, Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030031, Xi'an, Shaanxi 710062, People's Republic of China
| | - Weize Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Li-Fei Ji
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Ouardia Akdim
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, Wales, U.K
| | - Xiaoyang Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, Wales, U.K
| | - Haixin Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Jian Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yan-Xia Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
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35
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Lei Z, Liu P, Yang X, Zou P, Nairan A, Jiao S, Cao R, Wang W, Kang F, Yang C. Monolithic Nickel Catalyst Featured with High-Density Crystalline Steps for Stable Hydrogen Evolution at Large Current Density. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301247. [PMID: 37086132 DOI: 10.1002/smll.202301247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/13/2023] [Indexed: 05/03/2023]
Abstract
Producing hydrogen via electrochemical water splitting with minimum environmental harm can help resolve the energy crisis in a sustainable way. Here, this work fabricates the pure nickel nanopyramid arrays (NNAs) with dense high-index crystalline steps as the cata electrode via a screw dislocation-dominated growth kinetic for long-term durable and large current density hydrogen evolution reaction. Such a monolithic NNAs electrode offers an ultralow overpotential of 469 mV at a current density of 5000 mA cm-2 in 1.0 m KOH electrolyte and shows a high stability up to 7000 h at a current density of 1000 mA cm-2 , which outperforms the reported catas and even the commercial platinum cata for long-term services under high current densities. Its unique structure can substantially stabilize the high-density surface crystalline steps on the catalytic electrode, which significantly elevates the catalytic activity and durability of nickel in an alkaline medium. In a typical commercial hydrogen gas generator, the total energy conversion rate of NNAs reaches 84.5% of that of a commercial Pt/Ti cata during a 60-day test of hydrogen production. This work approach can provide insights into the development of industry-compatible long-term durable, and high-performance non-noble metal catas for various applications.
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Affiliation(s)
- Zhanwu Lei
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Peng Liu
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Xin Yang
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Peichao Zou
- Department of Physics and Astronomy, University of California, Irvine, CA, 92697, USA
| | - Adeela Nairan
- Institute of Functional Porous Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Shuhong Jiao
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Ruiguo Cao
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Wenlong Wang
- State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing, 100084, P. R. China
| | - Feiyu Kang
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, P. R. China
| | - Cheng Yang
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China
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36
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Zhu E, Liu Y, Huang J, Zhang A, Peng B, Liu Z, Liu H, Yu J, Li YR, Yang L, Duan X, Huang Y. Bubble-Mediated Large-Scale Hierarchical Assembly of Ultrathin Pt Nanowire Network Monolayer at Gas/Liquid Interfaces. ACS NANO 2023. [PMID: 37410702 PMCID: PMC10373521 DOI: 10.1021/acsnano.3c04771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Extensive macroscale two-dimensional (2-D) platinum (Pt) nanowire network (NWN) sheets are created through a hierarchical self-assembly process with the aid of biomolecular ligands. The Pt NWN sheet is assembled from the attachment growth of 1.9 nm-sized 0-D nanocrystals into 1-D nanowires featuring a high density of grain boundaries, which then interconnect to form monolayer network structures extending into centimeter-scale size. Further investigation into the formation mechanism reveals that the initial emergence of NWN sheets occurs at the gas/liquid interfaces of the bubbles produced by sodium borohydride (NaBH4) during the synthesis process. Upon the rupture of these bubbles, an exocytosis-like process releases the Pt NWN sheets at the gas/liquid surface, which subsequently merge into a continuous monolayer Pt NWN sheet. The Pt NWN sheets exhibit outstanding oxygen reduction reaction (ORR) activities, with specific and mass activities 12.0 times and 21.2 times greater, respectively, than those of current state-of-the-art commercial Pt/C electrocatalysts.
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37
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Wen J, Chen S, Xu Y, Guan T, Zhang X, Bao N. Synthesis of Single Crystal 2D Cu 2FeSnS 4 Nanosheets with High-Energy Facets (111) as a Pt-Free Counter Electrode for Dye-Sensitized Solar Cells. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4743. [PMID: 37445056 DOI: 10.3390/ma16134743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
Two-dimensional Cu2FeSnS4 (CFTS) nanosheets with exposed high-energy facets (111) have been synthesized by a facile, scalable, and cost-effective one-pot heating process. The CFTS phase formation is confirmed by both X-ray diffraction and Raman spectroscopy. The formation mechanism of exposed high-energy facet CFTS growth is proposed and its electrochemical and photoelectrochemical properties are investigated in detail to reveal the origin of the anisotropic effect of the high-energy facets. Dye-sensitized solar cells (DSSC) achieve a favorable power conversion efficiency of 5.92% when employing CFTS thin film as a counter electrode, suggesting its potential as a cost-effective substitute for Pt in DSSCs.
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Affiliation(s)
- Jianming Wen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Suqin Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - You Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Tuxiang Guan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Xiaoyan Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Ningzhong Bao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
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38
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Koo K, Shen B, Baik SI, Mao Z, Smeets PJM, Cheuk I, He K, Dos Reis R, Huang L, Ye Z, Hu X, Mirkin CA, Dravid VP. Formation mechanism of high-index faceted Pt-Bi alloy nanoparticles by evaporation-induced growth from metal salts. Nat Commun 2023; 14:3790. [PMID: 37355759 DOI: 10.1038/s41467-023-39458-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/13/2023] [Indexed: 06/26/2023] Open
Abstract
Nanoparticles with high-index facets are intriguing because such facets can lend the structure useful functionality, including enhanced catalytic performance and wide-ranging optical tunability. Ligand-free solid-state syntheses of high index-facet nanoparticles, through an alloying-dealloying process with foreign volatile metals, are attractive owing to their materials generality and high yields. However, the role of foreign atoms in stabilizing the high-index facets and the dynamic nature of the transformation including the coarsening and facet regulation process are still poorly understood. Herein, the transformation of Pt salts to spherical seeds and then to tetrahexahedra, is studied in situ via gas-cell transmission electron microscopy. The dynamic behaviors of the alloying and dealloying process, which involves the coarsening of nanoparticles and consequent facet regulation stage are captured in the real time with a nanoscale spatial resolution. Based on additional direct evidence obtained using atom probe tomography and density functional theory calculations, the underlying mechanisms of the alloying-dealloying process are uncovered, which will facilitate broader explorations of high-index facet nanoparticle synthesis.
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Affiliation(s)
- Kunmo Koo
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA
| | - Bo Shen
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Sung-Il Baik
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- Northwestern University Center for Atom-Probe Tomography (NUCAPT), Evanston, IL, 60208, USA
| | - Zugang Mao
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- Northwestern University Center for Atom-Probe Tomography (NUCAPT), Evanston, IL, 60208, USA
| | - Paul J M Smeets
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA
| | - Ivan Cheuk
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Kun He
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA
| | - Roberto Dos Reis
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Liliang Huang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Zihao Ye
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Xiaobing Hu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA.
| | - Chad A Mirkin
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA.
| | - Vinayak P Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
- The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA.
- International Institute of Nanotechnology, Northwestern University, Evanston, IL, 60208, USA.
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39
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Choi S, Im SW, Huh JH, Kim S, Kim J, Lim YC, Kim RM, Han JH, Kim H, Sprung M, Lee SY, Cha W, Harder R, Lee S, Nam KT, Kim H. Strain and crystallographic identification of the helically concaved gap surfaces of chiral nanoparticles. Nat Commun 2023; 14:3615. [PMID: 37330546 DOI: 10.1038/s41467-023-39255-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 06/02/2023] [Indexed: 06/19/2023] Open
Abstract
Identifying the three-dimensional (3D) crystal plane and strain-field distributions of nanocrystals is essential for optical, catalytic, and electronic applications. However, it remains a challenge to image concave surfaces of nanoparticles. Here, we develop a methodology for visualizing the 3D information of chiral gold nanoparticles ≈ 200 nm in size with concave gap structures by Bragg coherent X-ray diffraction imaging. The distribution of the high-Miller-index planes constituting the concave chiral gap is precisely determined. The highly strained region adjacent to the chiral gaps is resolved, which was correlated to the 432-symmetric morphology of the nanoparticles and its corresponding plasmonic properties are numerically predicted from the atomically defined structures. This approach can serve as a comprehensive characterization platform for visualizing the 3D crystallographic and strain distributions of nanoparticles with a few hundred nanometers, especially for applications where structural complexity and local heterogeneity are major determinants, as exemplified in plasmonics.
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Affiliation(s)
- Sungwook Choi
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Sang Won Im
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Ji-Hyeok Huh
- KU-KIST Graduate School of Converging Science & Technology, Korea University, Seoul, 02481, Korea
| | - Sungwon Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Jaeseung Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Yae-Chan Lim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, 22607, Germany
| | - Su Yong Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Korea
| | - Wonsuk Cha
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Ross Harder
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Seungwoo Lee
- KU-KIST Graduate School of Converging Science & Technology, Korea University, Seoul, 02481, Korea
- Department of Integrative Energy Engineering and KU Photonics Center, Korea University, Seoul, 02481, Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea.
| | - Hyunjung Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea.
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40
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Peng W, Chen Y, Yu X, Hou D. High-Index Epitaxial Fe Films Grown on MgO(113). MATERIALS (BASEL, SWITZERLAND) 2023; 16:4352. [PMID: 37374536 DOI: 10.3390/ma16124352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/26/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023]
Abstract
The epitaxial growth of high-index Fe films on MgO(113) substrates is successfully achieved using direct current (DC) magnetron sputtering, despite the significant lattice constant mismatch between Fe and MgO. X-ray diffraction (XRD) analysis is employed to characterize the crystal structure of Fe films, revealing an Fe(103) out-of-plane orientation. Furthermore, our investigation reveals that the Fe[010] direction is parallel to the MgO[11¯0] direction within the films plane. These findings provide valuable insights into the growth of high-index epitaxial films on substrates with large lattice constant mismatch, thereby contributing to the advancement of research in this field.
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Affiliation(s)
- Wenzhi Peng
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yulong Chen
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Xuhao Yu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Dazhi Hou
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
- Department of Physics, University of Science and Technology of China, Hefei 230026, China
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Zhang X, Wang T, Wang C, Hübner R, Eychmüller A, Zhan J, Cai B. Bimetallic Pt-Hg Aerogels for Electrocatalytic Upgrading of Ethanol to Acetate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207557. [PMID: 36866466 DOI: 10.1002/smll.202207557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/13/2023] [Indexed: 06/15/2023]
Abstract
Electrochemical upgrading of ethanol to acetic acid provides a promising strategy to couple with the current hydrogen production from water electrolysis. This work reports the design of a series of bimetallic PtHg aerogels, where the PtHg aerogel exhibits a 10.5-times higher mass activity than that of commercial Pt/C toward ethanol oxidation. More impressively, the PtHg aerogel demonstrates nearly 100% selectivity toward the production of acetic acid. The operando infrared spectroscopic studies and nuclear magnetic resonance analysis verify the preferable C2 pathway mechanism during the reaction. This work opens an avenue for the electrochemical synthesis of acetic acid via ethanol electrolysis.
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Affiliation(s)
- Xin Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Tao Wang
- Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Cui Wang
- Physical Chemistry, Technische Universität Dresden, 01069, Dresden, Germany
| | - René Hübner
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany
| | | | - Jinhua Zhan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Bin Cai
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
- Shenzhen Research Institute of Shandong University, Shenzhen, 518057, P. R. China
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42
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Feng G, Ning F, Pan Y, Chen T, Song J, Wang Y, Zou R, Su D, Xia D. Engineering Structurally Ordered High-Entropy Intermetallic Nanoparticles with High-Activity Facets for Oxygen Reduction in Practical Fuel Cells. J Am Chem Soc 2023; 145:11140-11150. [PMID: 37161344 DOI: 10.1021/jacs.3c00868] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
High-entropy solid-solution alloys have generated significant interest in energy conversion technologies. However, structurally ordered high-entropy intermetallic (HEI) nanoparticles (NPs) have been rarely reported in electrocatalysis applications. Here, we demonstrate structurally ordered PtIrFeCoCu HEI (PIFCC-HEI) NPs with extremely superior performance for both oxygen reduction reaction (ORR) and H2/O2 fuel cells. The PIFCC-HEI NPs show an average diameter of 6 nm. Atomic structural characterizations including atomic-resolution energy-dispersive spectroscopy (EDS) mapping technology confirm the ordered intermetallic structure of PIFCC-HEI NPs. As an electrocatalyst for ORR, the PIFCC-HEI/C achieves an ultrahigh mass activity of 7.14 A mgnoble metals-1 at 0.85 V and extraordinary durability over 60 000 potential cycles. Moreover, the fuel cell assembled with PIFCC-HEI/C as the cathode delivers an ultrahigh peak power density of 1.73 W cm-2 at a back pressure of 1.0 bar and almost no working voltage decay after 80 h operation, certifying the top-level performance among reported fuel cells. Theoretical calculations combined with experimental results reveal that the superior performance of PIFCC-HEI/C for ORR and fuel cells is attributed to its ultrahigh-activity facets. Especially, the (001) facet affords the lowest activation barriers for the rate-limiting step, the optimal downshift of the d-band center, and more efficient regulation of electron structures for ORR. This work not only opens up a new avenue for the fabrication of high-activity facets in the catalysts but also highlights structurally ordered HEI NPs as sufficiently effective catalysts in practical fuel cells and other potential energy-related applications.
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Affiliation(s)
- Guang Feng
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Fanghua Ning
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Yue Pan
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Tao Chen
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Jin Song
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Yucheng Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative innovation center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Ruqiang Zou
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
| | - Dong Su
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Dingguo Xia
- Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China
- Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, Beijing 100871, P. R. China
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43
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Halford GC, Personick ML. Bridging Colloidal and Electrochemical Nanoparticle Growth with In Situ Electrochemical Measurements. Acc Chem Res 2023; 56:1228-1238. [PMID: 37140656 DOI: 10.1021/acs.accounts.3c00112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
ConspectusProspective applications involving the electrification of industrial chemical processes and electrical energy to chemical fuels interconversion as part of the energy transition to renewable energy sources have led to an increasing need for highly tailored nanostructures immobilized on electrode surfaces. Control of surface facet structure across material compositions is of particular importance for ensuring performance in such applications. Colloidal methods for producing shaped nanoparticles in solution are abundant, particularly for noble metals. However, significant technical challenges remain with respect to rationally designing syntheses for the novel compositions and morphologies required to sustainably enable the above technological advances as well as in developing methods for uniformly and reproducibly dispersing colloidally synthesized nanostructures on electrode surfaces. The direct synthesis of nanoparticles on electrodes using chemical reduction approaches remains challenging, though recent advances have been made for certain materials and structures. Electrochemical nanoparticle synthesis─where an applied current or potential instead of a chemical reducing agent drives the redox chemistry of nanoparticle growth─is poised to play an important role in advancing the fabrication of nanostructured electrodes. Specifically, this Account focuses on the colloidal-inspired design of electrochemical syntheses and the interplay between colloidal and electrochemical approaches in terms of understanding the fundamental chemical reaction mechanisms of nanoparticle growth. An initial discussion of the development of electrochemical particle syntheses that incorporate colloidal synthetic tools highlights the promising emergent capabilities that result from blending these two approaches. Furthermore, it demonstrates how existing colloidal syntheses can be directly translated to electrochemical growth on a conductive surface using real-time electrochemical measurements of the chemistry of the growth solution. Measuring the open circuit potential of a colloidal synthesis over time and then replicating that measured potential during electrochemical deposition leads to the formation of the same nanoparticle shape. These in situ open circuit and chronopotentiometric measurements also give fundamental insight about the changing chemical environment during particle growth. We highlight how these time-resolved electrochemical measurements, as well as correlated spectroelectrochemical monitoring of particle formation kinetics, enable the extraction of information regarding mechanisms of particle formation that is difficult to obtain using other approaches. This information can be translated back into colloidal synthesis design via a directed, intentional approach to synthetic development. We additionally explore the added flexibility of synthetic design for methods involving electrochemically driven reduction as compared to the use of chemical reducing agents. The Account concludes with a brief perspective on potential future directions in both fundamental studies and synthetic development enabled by this emerging integrated electrochemical approach.
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Affiliation(s)
- Gabriel C Halford
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
| | - Michelle L Personick
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459, United States
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Nie M, Xu Z, Luo L, Wang Y, Gan W, Yuan Q. One-pot synthesis of ultrafine trimetallic PtPdCu alloy nanoparticles decorated on carbon nanotubes for bifunctional catalysis of ethanol oxidation and oxygen reduction. J Colloid Interface Sci 2023; 643:26-37. [PMID: 37044011 DOI: 10.1016/j.jcis.2023.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/14/2023]
Abstract
Bifunctional catalysts for ethanol oxidation reaction (EOR) and oxygen reduction reaction (ORR) with high noble-metal utilization are highly beneficial to direct ethanol fuel cells (DEFCs). This study developed a ternary bifunctional catalyst composed of ultrafine PtPdCu alloy nanoparticles and carbon nanotubes (CNTs) support through a facile surfactant-free solvothermal route. The carboxyl terminal groups on CNTs ensure the confined growth of PtPdCu alloys (∼5 nm) and suppress Ostwald ripening of metallic active sites during electrochemical cycling. Consequently, PtPdCu/CNTs exhibits high mass activity (1.95 A mg-1) and specific activity (4.08 mA cm-2) toward EOR, which are 7.8 and 8.9 times higher, respectively, than those of commercial Pt/C. Furthermore, PtPdCu/CNTs displays superior stability toward EOR compared with its bimetallic counterparts (PtPd/CNTs and PtCu/CNTs). In addition, PtPdCu/CNTs exhibits the highest half-wave potential of 0.888 V among all electrocatalysts, indicating high ORR activity. Density functional theory calculations reveal that Pd and Cu mediate the electronic structure of Pt, leading to enhanced catalytic activity of PtPdCu/CNTs. The excellent catalytic property of PtPdCu/CNTs can also be attributed to the bifunctional effects of Pd/Cu and the interaction between metal and the carbon support. The proposed material is a contribution to the family of efficient ternary-alloy electrocatalysts for fuel cells.
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Affiliation(s)
- Mingxing Nie
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, Guangdong, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
| | - Zhengyu Xu
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Lei Luo
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Yu Wang
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, Guangdong, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China.
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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45
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Li C, Clament Sagaya Selvam N, Fang J. Shape-Controlled Synthesis of Platinum-Based Nanocrystals and Their Electrocatalytic Applications in Fuel Cells. NANO-MICRO LETTERS 2023; 15:83. [PMID: 37002489 PMCID: PMC10066057 DOI: 10.1007/s40820-023-01060-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/28/2023] [Indexed: 06/05/2023]
Abstract
To achieve environmentally benign energy conversion with the carbon neutrality target via electrochemical reactions, the innovation of electrocatalysts plays a vital role in the enablement of renewable resources. Nowadays, Pt-based nanocrystals (NCs) have been identified as one class of the most promising candidates to efficiently catalyze both the half-reactions in hydrogen- and hydrocarbon-based fuel cells. Here, we thoroughly discuss the key achievement in developing shape-controlled Pt and Pt-based NCs, and their electrochemical applications in fuel cells. We begin with a mechanistic discussion on how the morphology can be precisely controlled in a colloidal system, followed by highlighting the advanced development of shape-controlled Pt, Pt-alloy, Pt-based core@shell NCs, Pt-based nanocages, and Pt-based intermetallic compounds. We then select some case studies on models of typical reactions (oxygen reduction reaction at the cathode and small molecular oxidation reaction at the anode) that are enhanced by the shape-controlled Pt-based nanocatalysts. Finally, we provide an outlook on the potential challenges of shape-controlled nanocatalysts and envision their perspective with suggestions.
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Affiliation(s)
- Can Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | | | - Jiye Fang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA.
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46
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Richard MI, Labat S, Dupraz M, Carnis J, Gao L, Texier M, Li N, Wu L, Hofmann JP, Levi M, Leake SJ, Lazarev S, Sprung M, Hensen EJM, Rabkin E, Thomas O. Anomalous Glide Plane in Platinum Nano- and Microcrystals. ACS NANO 2023; 17:6113-6120. [PMID: 36926832 DOI: 10.1021/acsnano.3c01306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
At the nanoscale, the properties of materials depend critically on the presence of crystal defects. However, imaging and characterizing the structure of defects in three dimensions inside a crystal remain a challenge. Here, by using Bragg coherent diffraction imaging, we observe an unexpected anomalous {110} glide plane in two Pt submicrometer crystals grown by very different processes and having very different morphologies. The structure of the defects (type, associated glide plane, and lattice displacement) is imaged in these faceted Pt crystals. Using this noninvasive technique, both plasticity and unusual defect behavior can be probed at the nanoscale.
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Affiliation(s)
- Marie-Ingrid Richard
- Univ. Grenoble Alpes, CEA Grenoble, IRIG/MEM/NRX, Grenoble 38054, France
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Stéphane Labat
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397 Marseille, France
| | - Maxime Dupraz
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, Grenoble 38000, France
- Univ. Grenoble Alpes, CEA Grenoble, NRX, 17 Avenue des Martyrs 38000 Grenoble, France
| | - Jérôme Carnis
- Univ. Grenoble Alpes, CEA Grenoble, IRIG/MEM/NRX, Grenoble 38054, France
| | - Lu Gao
- Laboratory for Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Michaël Texier
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397 Marseille, France
| | - Ni Li
- Univ. Grenoble Alpes, CEA Grenoble, NRX, 17 Avenue des Martyrs 38000 Grenoble, France
| | - Longfei Wu
- Laboratory for Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jan P Hofmann
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287 Darmstadt, Germany
| | - Mor Levi
- Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel
| | - Steven J Leake
- ESRF - The European Synchrotron, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Sergey Lazarev
- Deutsches Elektronen-Synchrotron (DESY), D-22607 Hamburg, Germany
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron (DESY), D-22607 Hamburg, Germany
| | - Emiel J M Hensen
- Laboratory for Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Eugen Rabkin
- Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003, Haifa, Israel
| | - Olivier Thomas
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397 Marseille, France
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47
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Wang X, Wei G, Liu W, Zhang Y, Zhu C, Sun Q, Zhang M, Wei H. Platinum-Nickel Nanoparticles with Enhanced Oxidase-like Activity for Total Antioxidant Capacity Bioassay. Anal Chem 2023; 95:5937-5945. [PMID: 36972556 DOI: 10.1021/acs.analchem.2c05425] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
While great progress in nanozyme-enabled analytical chemistry has been made, most current nanozyme-based biosensing platforms are based on peroxidase-like nanozymes. However, peroxidase-like nanozymes with multienzymatic activities can influence the detection sensitivity and accuracy, while the use of unstable hydrogen peroxide (H2O2) in a peroxidase-like catalytic reaction may result in the reproducibility challenge of sensing signals. We envision that constructing biosensing systems by using oxidase-like nanozymes can address these limitations. Herein, we reported that platinum-nickel nanoparticles (Pt-Ni NPs) with Pt-rich shells and Ni-rich cores possessed high oxidase-like catalytic efficiency, exhibiting a 2.18-fold higher maximal reaction velocity (vmax) than initial pure Pt NPs. The oxidase-like Pt-Ni NPs were applied to develop a colorimetric assay for the determination of total antioxidant capacity (TAC). The antioxidant levels of four bioactive small molecules, two antioxidant nanomaterials, and three cells were successfully measured. Our work not only provides new insights for preparing highly active oxidase-like nanozymes but also manifests their applications for TAC analysis.
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Affiliation(s)
- Xiaoyu Wang
- Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Gen Wei
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wanling Liu
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yihong Zhang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Chenxin Zhu
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Qi Sun
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Minxuan Zhang
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hui Wei
- College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu 210023, China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, Jiangsu 210023, China
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48
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Yan X, Zhao H, Shi X, Yang Z, Ma J. Dual Function of 4-Aminothiophene in Surface-Enhanced Raman Scattering Application as an Internal Standard and Adsorbent for Controlling Au Nanocrystal Morphology. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13427-13438. [PMID: 36857292 DOI: 10.1021/acsami.2c19390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The sensitivity and quantitative accuracy of surface-enhanced Raman scattering (SERS) are the main factors that restrict its application. Here, novel Au nanoscale convex polyhedrons (Au NCPs) were designed and fabricated to solve these problems via an embedded standard, including eight pods and six small protrusions. Spherical Au seeds regrew into different sizes of Au NCPs with a face-centered cubic structure. This morphology is due to the dual mechanism of the 4-aminothiophene (4-ATP) molecule that serves as an internal standard and a surface ligand regulator combined with the regulatory role of hexadecyl trimethyl ammonium chloride. The results show that Au NCPs were enclosed by high-index {12 9 1} facets, which greatly improved the local plasma resonance and reduced the lowest SERS detectable concentration of pyrene in standard seawater to 0.5 nM. An effective reference was produced by embedding 4-ATP with a relative standard deviation value less than 2.97% (in the same batch) and 3.92% (between different batches). Our research offers a new strategy for morphological regulation of metal nanocrystals, which is useful for the preparation of highly sensitive SERS substrates and trace analysis.
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Affiliation(s)
- Xia Yan
- Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, P. R. China
- Department of Physics, Lyuliang University, Lyuliang 033000, P. R. China
| | - Hang Zhao
- Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, P. R. China
| | - Xiaofeng Shi
- Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, P. R. China
| | - Zhiyuan Yang
- Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, P. R. China
| | - Jun Ma
- Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100, P. R. China
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49
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Qin Y, Fang D, Wu Y, Wu Y, Yao W. Controllable Preparation of Gold Nanocrystals with Different Porous Structures for SERS Sensing. Molecules 2023; 28:molecules28052316. [PMID: 36903564 PMCID: PMC10004769 DOI: 10.3390/molecules28052316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
Porous Au nanocrystals (Au NCs) have been widely used in catalysis, sensing, and biomedicine due to their excellent localized surface plasma resonance effect and a large number of active sites exposed by three-dimensional internal channels. Here, we developed a ligand-induced one-step method for the controllable preparation of mesoporous, microporous, and hierarchical porous Au NCs with internal 3D connecting channels. At 25 °C, using glutathione (GTH) as both a ligand and reducing agent combined with the Au precursor to form GTH-Au(I), and under the action of the reducing agent ascorbic acid, the Au precursor is reduced in situ to form a dandelion-like microporous structure assembled by Au rods. When cetyltrimethylammonium bromide (C16TAB) and GTH are used as ligands, mesoporous Au NCs formed. When increasing the reaction temperature to 80 °C, hierarchical porous Au NCs with both microporous and mesoporous structures will be synthesized. We systematically explored the effect of reaction parameters on porous Au NCs and proposed possible reaction mechanisms. Furthermore, we compared the SERS-enhancing effect of Au NCs with three different pore structures. With hierarchical porous Au NCs as the SERS base, the detection limit for rhodamine 6G (R6G) reached 10-10 M.
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50
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Zhu Y, Yang Y, Gu X, Gao Q, Diko P, Yao X. Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa 2Cu 3O 7-δ crystals. IUCRJ 2023; 10:177-188. [PMID: 36692858 PMCID: PMC9980388 DOI: 10.1107/s2052252523000076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
Self-repair, as a natural phenomenon, has been vastly observed and investigated in a variety of fields. With such an ability, living species self-heal their wounds to restore physiological functions while non-biological materials return to their original states, for example, thin surface layer growth occurs in the regeneration of incomplete KH2PO4 crystals. Here, two seeding strategies are developed for creating incomplete crystallographic shapes (i.e. right-angled concave corners) of YBa2Cu3O7-δ (YBCO) superconducting crystals with self-repairing capability in top-seeded melt growth. One involves in situ self-assembly seeding, by which the ability to self-repair promotes YBCO growth; the other is vertically connected seeding, by which self-repair triggers YBCO nucleation. Consequently, rapid surface crystallization originated at concave corners and swiftly generated initial growth morphology approaching equilibrium. Furthermore, these rapid-growth regions including the concave crystal or seed innately functioned as sizable effective seeding regions, enabling the enlargement of the c-oriented growth sector and the enhancement of properties for YBCO crystals. This work demonstrates experimentally that biaxial-in-plane-aligned crystals and precisely perpendicular-arranged seeds are important self-repairing activators for the rapid growth of YBCO crystals. This nature-inspired self-repairing work offers insights into the design of seeding architecture with non-equilibrium morphology for inducing sizable high-performance crystals in the YBCO family and other functional materials.
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Affiliation(s)
- Yanhan Zhu
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
| | - Yi Yang
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
| | - Xiafan Gu
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
| | - Qiang Gao
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
| | - Pavel Diko
- Department of Materials Physics, Institute of Experimental Physics, Slovak Academy of Science, Watsonova 47, Košice 04001, Slovakia
| | - Xin Yao
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
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