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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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2
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Sun L, Zhao S, Tang X, Yu Q, Gao F, Liu J, Wang Y, Zhou Y, Yi H. Recent advances in catalytic oxidation of VOCs by two-dimensional ultra-thin nanomaterials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170748. [PMID: 38340848 DOI: 10.1016/j.scitotenv.2024.170748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/24/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
Catalytic oxidation, an end-of-pipe treatment technology for effectively purifying volatile organic compounds (VOCs), has received widespread attention. The crux of catalytic oxidation lies in the development of efficient catalysts, with their optimization necessitating a comprehensive analysis of the catalytic reaction mechanism. Two-dimensional (2D) ultra-thin nanomaterials offer significant advantages in exploring the catalytic oxidation mechanism of VOCs due to their unique structure and properties. This review classifies strategies for regulating catalytic properties and typical applications of 2D materials in VOCs catalytic oxidation, in addition to their characteristics and typical characterization techniques. Furthermore, the possible reaction mechanism of 2D Co-based and Mn-based oxides in the catalytic oxidation of VOCs is analyzed, with a special focus on the synergistic effect between oxygen and metal vacancies. The objective of this review is to provide valuable references for scholars in the field.
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Affiliation(s)
- Long Sun
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Shunzheng Zhao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Xiaolong Tang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Qingjun Yu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Fengyu Gao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jun Liu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ya Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yuansong Zhou
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Honghong Yi
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China.
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3
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Tanjil MRE, Gupta T, Gole MT, Suero KP, Yin Z, McCleeary DJ, Douglas ORT, Kincanon MM, Rudawski NG, Anderson AB, Murphy CJ, Zhao H, Wang MC. Nanoscale goldbeating: Solid-state transformation of 0D and 1D gold nanoparticles to anisotropic 2D morphologies. PNAS NEXUS 2023; 2:pgad267. [PMID: 37621403 PMCID: PMC10446819 DOI: 10.1093/pnasnexus/pgad267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/24/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Goldbeating is the ancient craft of thinning bulk gold (Au) into gossamer leaves. Pioneered by ancient Egyptian craftsmen, modern mechanized iterations of this technique can fabricate sheets as thin as ∼100 nm. We take inspiration from this millennia-old craft and adapt it to the nanoscale regime, using colloidally synthesized 0D/1D Au nanoparticles (AuNPs) as highly ductile and malleable nanoscopic Au ingots and subjecting them to solid-state, uniaxial compression. The applied stress induces anisotropic morphological transformation of AuNPs into 2D leaf form and elucidates insights into metal nanocrystal deformation at the extreme length scales. The induced 2D morphology is found to be dependent on the precursor 0D/1D NP morphology, size (0D nanosphere diameter and 1D nanorod diameter and length), and their on-substrate arrangement (e.g., interparticle separation and packing order) prior to compression. Overall, this versatile and generalizable solid-state compression technique enables new pathways to synthesize and investigate the anisotropic morphological transformation of arbitrary NPs and their resultant emergent phenomena.
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Affiliation(s)
- Md Rubayat-E Tanjil
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Tanuj Gupta
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA
| | - Matthew T Gole
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Keegan P Suero
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Zhewen Yin
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Donald J McCleeary
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Ossie R T Douglas
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
| | - Maegen M Kincanon
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Nicholas G Rudawski
- Herbert Wertheim College of Engineering Research Service Centers, University of Florida, Gainesville, FL 32611, USA
| | - Alissa B Anderson
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Catherine J Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Huijuan Zhao
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA
| | - Michael Cai Wang
- Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA
- Department of Medical Engineering, University of South Florida, Tampa, FL 33620, USA
- Department of Chemical, Biological, and Materials Engineering, University of South Florida, Tampa, FL 33620, USA
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Yu S, Zhang C, Yang H. Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment. Chem Rev 2023; 123:3443-3492. [PMID: 36802540 DOI: 10.1021/acs.chemrev.2c00469] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
This paper reviews recent studies on the preparation of two-dimensional (2D) metal nanostructures, particularly nanosheets. As metal often exists in the high-symmetry crystal phase, such as face centered cubic structures, reducing the symmetry is often needed for the formation of low-dimensional nanostructures. Recent advances in characterization and theory allow for a deeper understanding of the formation of 2D nanostructures. This Review firstly describes the relevant theoretical framework to help the experimentalists understand chemical driving forces for the synthesis of 2D metal nanostructures, followed by examples on the shape control of different metals. Recent applications of 2D metal nanostructures, including catalysis, bioimaging, plasmonics, and sensing, are discussed. We end the Review with a summary and outlook of the challenges and opportunities in the design, synthesis, and application of 2D metal nanostructures.
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Affiliation(s)
- Siying Yu
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Cheng Zhang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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Yi D, Marcelot C, Romana I, Tassé M, Fazzini PF, Peres L, Ratel-Ramond N, Decorse P, Warot-Fonrose B, Viau G, Serp P, Soulantica K. Etching suppression as a means to Pt dendritic ultrathin nanosheets by seeded growth. NANOSCALE 2023; 15:1739-1753. [PMID: 36598381 DOI: 10.1039/d2nr05105b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
2D ultrathin metal nanostructures are emerging materials displaying distinct physical and chemical properties compared to their analogues of different dimensionalities. Nanosheets of fcc metals are intriguing, as their crystal structure does not favour a 2D configuration. Thanks to their increased surface-to-volume ratios and the optimal exposure of low-coordinated sites, 2D metal nanostructures can be advantageously exploited in catalysis. Synthesis approaches to ultrathin nanosheets of pure platinum are scarce compared to other noble metals and to Pt-based alloys. Here, we present the selective synthesis of Pt ultrathin nansosheets by a simple seeded-growth method. The most crucial point in our approach is the selective synthesis of Pt seeds comprising planar defects, a main driving force for the 2D growth of metals with fcc structure. Defect engineering is employed here, not in order to disintegrate, but for conserving the defect comprising seeds. This is achieved by in situ elimination of the principal etching agent, chloride, which is present in the PtCl2 precursor. As a result of etching suppression, twinned nuclei, that are selectively formed during the early stage of nucleation, survive and grow to multipods comprising planar defects. Using the twinned multipods as seeds for the subsequent 2D overgrowth of Pt from Pt(acac)2 yields ultrathin dendritic nanosheets, in which the planar defects are conserved. Using phenylacetylene hydrogenation as a model reaction of selective hydrogenation, we compared the performance of Pt nanosheets to that of a commercial Pt/C catalyst. The Pt nanosheets show better stability and much higher selectivity to styrene than the commercial Pt/C catalyst for comparable activity.
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Affiliation(s)
- Deliang Yi
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Cécile Marcelot
- CEMES-CNRS, Université de Toulouse, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - Idaline Romana
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Marine Tassé
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Pier-Francesco Fazzini
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Laurent Peres
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Nicolas Ratel-Ramond
- CEMES-CNRS, Université de Toulouse, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - Philippe Decorse
- ITODYS, UMR 7086, CNRS, Université de Paris, F-75013 Paris, France
| | | | - Guillaume Viau
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Philippe Serp
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Katerina Soulantica
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
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El-Kady MM, Ansari I, Arora C, Rai N, Soni S, Kumar Verma D, Singh P, El Din Mahmoud A. Nanomaterials: A Comprehensive Review of Applications, Toxicity, Impact, and Fate to Environment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Xie Z, Duo Y, Fan T, Zhu Y, Feng S, Li C, Guo H, Ge Y, Ahmed S, Huang W, Liu H, Qi L, Guo R, Li D, Prasad PN, Zhang H. Light-induced tumor theranostics based on chemical-exfoliated borophene. LIGHT, SCIENCE & APPLICATIONS 2022; 11:324. [PMID: 36369148 PMCID: PMC9652458 DOI: 10.1038/s41377-022-00980-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 08/23/2022] [Accepted: 09/09/2022] [Indexed: 06/03/2023]
Abstract
Among 2D materials (Xenes) which are at the forefront of research activities, borophene, is an exciting new entry due to its uniquely varied optical, electronic, and chemical properties in many polymorphic forms with widely varying band gaps including the lightest 2D metallic phase. In this paper, we used a simple selective chemical etching to prepare borophene with a strong near IR light-induced photothermal effect. The photothermal efficiency is similar to plasmonic Au nanoparticles, with the added benefit of borophene being degradable due to electron deficiency of boron. We introduce this selective chemical etching process to obtain ultrathin and large borophene nanosheets (thickness of ~4 nm and lateral size up to ~600 nm) from the precursor of AlB2. We also report first-time observation of a selective Acid etching behavior showing HCl etching of Al to form a residual B lattice, while HF selectively etches B to yield an Al lattice. We demonstrate that through surface modification with polydopamine (PDA), a biocompatible smart delivery nanoplatform of B@PDA can respond to a tumor environment, exhibiting an enhanced cellular uptake efficiency. We demonstrate that borophene can be more suitable for safe photothermal theranostic of thick tumor using deep penetrating near IR light compared to gold nanoparticles which are not degradable, thus posing long-term toxicity concerns. With about 40 kinds of borides, we hope that our work will open door to more discoveries of this top-down selective etching approach for generating borophene structures with rich unexplored thermal, electronic, and optical properties for many other technological applications.
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Affiliation(s)
- Zhongjian Xie
- Institute of Pediatrics, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China
| | - Yanhong Duo
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institute, Stockholm, Sweden
| | - Taojian Fan
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China
| | - Yao Zhu
- Shenzhen Medical Ultrasound Engineering Center, Department of Ultrasonography, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, First Clinical Medical College of Southern University of Science and Technology, 518020, Shenzhen, China
| | - Shuai Feng
- Optoelectronics Research Center, School of Science, Minzu University of China, 100081, Beijing, PR China
| | - Chuanbo Li
- Optoelectronics Research Center, School of Science, Minzu University of China, 100081, Beijing, PR China
| | - Honglian Guo
- Optoelectronics Research Center, School of Science, Minzu University of China, 100081, Beijing, PR China
| | - Yanqi Ge
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China
| | - Shakeel Ahmed
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China
| | - Weichun Huang
- Nantong Key Lab of Intelligent and New Energy Materials, College of Chemistry and Chemical Engineering, Nantong University, 226019, Nantong, Jiangsu, China
| | - Huiling Liu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, 510632, Guangzhou, China
| | - Ling Qi
- Department of Core Medical Laboratory, the Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, Guang Dong Province, China
| | - Rui Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier Development, Department of Biomedical Engineering, Jinan University, 510632, Guangzhou, China
| | - Defa Li
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, Guangdong, China.
| | - Paras N Prasad
- Institute for Lasers, Photonics, and Biophotonics and Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, USA.
| | - Han Zhang
- Shenzhen Engineering Laboratory of phosphorene and Optoelectronics; International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen Institute of Translational Medicine, Department of Otolaryngology, Shenzhen Second People's Hospital, the First Affiliated Hospital, Institute of Microscale Optoelectronics, Shenzhen University, 518060, Shenzhen, China.
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Hot-Pressed Two-Dimensional Amorphous Metals and Their Electronic Properties. CRYSTALS 2022. [DOI: 10.3390/cryst12050616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
As an emerging research field, two-dimensional (2D) metals have been the subject of increasing research efforts in recent years due to their potential applications. However, unlike typical 2D layered materials, such as graphene, which can be exfoliated from their bulk parent compounds, it is hardly possible to produce 2D metals through exfoliation techniques due to the absence of Van der Waals gaps. Indeed, the lack of effective material preparation methods severely limits the development of this research field. Here, we report a PDMS-assisted hot-pressing method in glovebox to obtain ultraflat nanometer-thick 2D metals/metal oxide amorphous films of various low-melting-point metals and alloys, e.g., gallium (Ga), indium (In), tin (Sn), and Ga0.87Ag0.13 alloy. The valence states extracted from X-ray photoelectron spectroscopy (XPS) indicate that the ratios of oxidation to metal in our 2D films vary among metals. The temperature-dependent electronic measurements show that the transport behavior of 2D metal/metal oxide films conform with the 2D Mott’s variable range hopping (VRH) model. Our experiments provide a feasible and effective approach to obtain various 2D metals.
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The Green Synthesis of 2D Copper Nanosheets and Their Light Absorption. MATERIALS 2021; 14:ma14081926. [PMID: 33921382 PMCID: PMC8068985 DOI: 10.3390/ma14081926] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/21/2021] [Accepted: 03/27/2021] [Indexed: 12/01/2022]
Abstract
In this study, a new green synthesis method for two-dimensional (2D) copper nanosheets is developed using methylsulfonylmethane (DMSO2). The chemical composition and light absorption of 2D copper nanosheets are also studied. A new green method is mainly to utilize DMSO2, which is environmentally friendly enough to be considered a food-grade chemical, unlike the conventional method using toxic chemicals, such as ammonia and hydrazine (N2H4). With a reducing agent, the aggregation of uncertain copper products was produced in the absence of DMSO2, while 2D copper nanosheets were formed in the presence of DMSO2. The optimum concentration of DMSO2 as a surfactant was determined to be 2 M, resulting in large surface areas with regular edges. FTIR spectrum confirmed C–H bonding from DMSO2 used to synthesize 2D copper nanosheets. The light absorption peak was revealed at 800 nm in the UV–vis spectrum. This proposed new green method not only has a simpler process than the conventional methods, such as hydrothermal method and chemical bath deposition, but also substitutes toxic chemicals with DMSO2. 2D copper nanosheets can be used for various applications, including conductive filler or ink in the flexible electronics and laser photonics fields.
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Pt nanoparticles encapsulated on V2O5 nanosheets carriers as efficient catalysts for promoted aerobic oxidative desulfurization performance. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63685-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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Shirvani S, Ghashghaee M, Smith KJ. Two-dimensional Nanomaterials in Thermocatalytic Reactions: Transition Metal Dichalcogenides, Metal Phosphorus Trichalcogenides and MXenes. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1899605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Samira Shirvani
- Chemical and Biological Engineering Department, University of British Columbia, Vancouver, Canada
| | - Mohammad Ghashghaee
- Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Kevin J. Smith
- Chemical and Biological Engineering Department, University of British Columbia, Vancouver, Canada
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12
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Shukla A, Gaur N. A DFT study of defects in SnO monolayer and their interaction with O2 molecule. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137717] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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13
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Colloidal graphene oxide enhances the activity of a lipase and protects it from oxidative damage: Insights from physicochemical and molecular dynamics investigations. J Colloid Interface Sci 2020; 567:285-299. [PMID: 32062491 DOI: 10.1016/j.jcis.2020.02.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/26/2020] [Accepted: 02/04/2020] [Indexed: 01/17/2023]
Abstract
Physical adsorption of lipase from Thermomyces lanuginosus onto single-layer sheets of graphene oxide (GO) was studied using the response surface methodology to evaluate the physicochemical factors - temperature, pH, ionic strength, and concentration - affecting the enzymatic activity and the immobilization efficiency. The immobilization efficiency and the activity of the enzyme were inversely proportional to each other. Specifically, higher pH values increased the immobilization efficacy, but produced changes in the aggregation state and secondary structure of the enzyme, thus decreasing its activity. Lower pH values, in turn, reduced the immobilization efficacy, but increased the activity of the adsorbed lipase. The adsorbed and the free lipase were followed during 600 ns and 3.5 μs, respectively, in molecular dynamics (MD) simulations. MD trajectories showed that irreversible adsorption freezes the enzyme in a state with a correctly opened catalytic cavity, while the active site remains without a direct interaction with the GO adsorbent. In contrast to the interfacial activation of lipases in a hydrophobic environment, where the catalytic pocket attaches to the hydrophobic surface, the adsorption onto GO made the active site of the lipase accessible by altering the tertiary structure of the enzyme, leading to a higher catalytic efficiency. Experimental investigations confirmed that the physical adsorption onto GO induces tertiary structure changes in the lipase and protects it from H2O2 by accepting the oxidative damage upon itself. In summary, the physical adsorption of the lipase onto GO is mainly affected by pH and could possibly provide a spreadable and robust catalytic interface for biotechnological applications.
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14
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de Oliveira PFM, Michalchuk AAL, Marquardt J, Feiler T, Prinz C, Torresi RM, Camargo PHC, Emmerling F. Investigating the role of reducing agents on mechanosynthesis of Au nanoparticles. CrystEngComm 2020. [DOI: 10.1039/d0ce00826e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The influence of reducing agents on the mechanochemical synthesis of Au nanoparticles differ significantly from analogous solution syntheses. Environmentally benign mechanochemical syntheses of metal nanoparticles therefore require dedicated studies.
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Affiliation(s)
- Paulo F. M. de Oliveira
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | | | - Julien Marquardt
- BAM Federal Institute for Materials Research and Testing
- 12489 Berlin
- Germany
| | - Torvid Feiler
- BAM Federal Institute for Materials Research and Testing
- 12489 Berlin
- Germany
| | - Carsten Prinz
- BAM Federal Institute for Materials Research and Testing
- 12489 Berlin
- Germany
| | - Roberto M. Torresi
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Pedro H. C. Camargo
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
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