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Wang Q, Tang Q, Li P, Bai X. Recent advances in scanning electrochemical microscopy for energy applications. NANOTECHNOLOGY 2024; 35:502001. [PMID: 39312900 DOI: 10.1088/1361-6528/ad7e30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 09/23/2024] [Indexed: 09/25/2024]
Abstract
Scanning electrochemical microscopy (SECM) is a scanning probe technique capable of imaging substrate topography and measuring the local electrochemical reactivity of interfaces. Since introduced by Allen J. Bard and co-workers in 1989, it has expanded into a wide variety of fields, such as nanomaterial characterization, energy, kinetics, electrocatalysis, metal anti-corrosion, biology and instrumental development. SECM uses an ultra-microelectrode as the probe to record redox current during probe scanning across sample surfaces to obtain local topography and electrochemical reactivity of samples. Specifically, three main topics are reviewed and discussed: (1) the working principles and operating modes of SECM; (2) the recent developments in the application of SECM in energy science, including solar cell, rechargeable batteries, fuel cells and supercapacitors, with an emphasis on the last five years (2019-2023); (3) the perspectives and outlook of SECM in various energy devices. We anticipate that a wider adoption of SECM by the energy community will allow for the operando characterization of many types of reactions, and hold the potential to provide new insights into the structure/activity and composition/activity relationships.
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Affiliation(s)
- Qi Wang
- Department of Applied Chemistry, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
- Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
| | - Qianlin Tang
- Department of Applied Chemistry, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
- Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
| | - Peipei Li
- Department of Applied Chemistry, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
- Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
| | - Xiaoxia Bai
- Department of Applied Chemistry, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
- Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi 710126, People's Republic of China
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2
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Zhong H, Gong Z, Yu J, Hou Y, Tao Y, Fu Q, Yang H, Xiao X, Cao X, Wang J, Ouyang G. Remarkable Active Site Utilization in Edge-Hosted-N Doped Carbocatalysts for Fenton-Like Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404958. [PMID: 39258821 DOI: 10.1002/advs.202404958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/30/2024] [Indexed: 09/12/2024]
Abstract
Improving the utilization of active sites in carbon catalysts is significant for various catalytic reactions, but still challenging, mainly due to the lack of strategies for controllable introduction of active dopants. Herein, a novel "Ar plasma etching-NH3 annealing" strategy is developed to regulate the position of active N sites, while maintaining the same nitrogen species and contents. Theoretical and experimental results reveal that the edge-hosted-N doped carbon nanotubes (E-N-CNT), with only 0.29 at.% N content, show great affinity to peroxymonosulfate (PMS), and exhibit excellent Fenton-like activity by generating singlet oxygen (1O2), which can reach as high as 410 times higher than the pristine CNT. The remarkable utilization of edge-hosted nitrogen atom is further verified by the edge-hosted-N enriched carbocatalyst, which shows superior capability for 4-chlorophenol degradation with a turnover frequency (TOF) value as high as 3.82 min-1, and the impressive TOF value can even surpass those of single-atom catalysts. This work proposes a controllable position regulation of active sites to improve atom utilization, which provides a new insight into the design of excellent Fenton-like catalysts with remarkable atom utilization efficiency.
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Affiliation(s)
- Huajie Zhong
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong, 519082, P. R. China
| | - Zeyu Gong
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong, 519082, P. R. China
| | - Jiaxing Yu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Yu Hou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Yuan Tao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Qi Fu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Huangsheng Yang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Xinzhe Xiao
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong, 519082, P. R. China
| | - Xingzhong Cao
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Junhui Wang
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong, 519082, P. R. China
| | - Gangfeng Ouyang
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong, 519082, P. R. China
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
- College of Chemistry & Molecular Engineering, Center of Advanced Analysis and Computational Science, Zhengzhou University, Zhengzhou, 450001, P. R. China
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangdong Academy of Science, 100 Xianlie Middle Road, Guangzhou, 510070, P. R. China
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3
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Wang X, Han C, Han Y, Huang R, Sun H, Guo P, Liu X, Huang M, Chen Y, Wu H, Zhang J, Yan X, Mao Z, Du A, Jia Y, Wang L. Highly Curved Defect Sites: How Curvature Effect Influences Metal-Free Defective Carbon Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401447. [PMID: 38693087 DOI: 10.1002/smll.202401447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/07/2024] [Indexed: 05/03/2024]
Abstract
Topological defects are widely recognized as effective active sites toward a variety of electrochemical reactions. However, the role of defect curvature is still not fully understood. Herein, carbon nanomaterials with rich topological defect sites of tunable curvature is reported. The curved defective surface is realized by controlling the high-temperature pyrolytic shrinkage process of precursors. Theoretical calculations demonstrate bending the defect sites can change the local electronic structure, promote the charge transfer to key intermediates, and lower the energy barrier for oxygen reduction reaction (ORR). Experimental results convince structural superiority of highly-curved defective sites, with a high kinetic current density of 22.5 mA cm-2 at 0.8 V versus RHE for high-curvature defective carbon (HCDC), ≈18 times that of low-curvature defective carbon (LCDC). Further raising the defect densities in HCDC leads to the dual-regulated products (HCHDC), which exhibit exceptionally outstanding ORR activity in both alkaline and acidic media (half-wave potentials: 0.88 and 0.74 V), outperforming most of the reported metal-free carbon catalysts. This work uncovers the curvature-activity relationship in carbon defect for ORR and provides new guidance to design advanced catalysts via curvature-engineering.
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Affiliation(s)
- Xin Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Chao Han
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Yun Han
- School of Environment and Science, Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, Brisbane, QLD, 4111, Australia
| | - Run Huang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Hai Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Panjie Guo
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Xuan Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Mengting Huang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Ying Chen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Helong Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Jinyan Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Xuecheng Yan
- School of Environment and Science, Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, Brisbane, QLD, 4111, Australia
| | - Zhelin Mao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Aijun Du
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Yi Jia
- Moganshan Institute ZJUT, Kangqian, Deqing, 313200, P. R. China
- Zhejiang Carbon Neutral Innovation Institute & Zhejiang International Cooperation Base for Science and Technology on Carbon Emission Reduction and Monitoring, Zhejiang University of Technology (ZJUT), 18 Wangchao Road, Gongshu District, Hangzhou, 310014, China
| | - Lei Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
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4
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Liu C, Liu T, Zhang Z, Sun Z, Zhang G, Wang E, Liu K. Understanding epitaxial growth of two-dimensional materials and their homostructures. NATURE NANOTECHNOLOGY 2024; 19:907-918. [PMID: 38987649 DOI: 10.1038/s41565-024-01704-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/22/2024] [Indexed: 07/12/2024]
Abstract
The exceptional physical properties of two-dimensional (2D) van der Waals (vdW) materials have been extensively researched, driving advances in material synthesis. Epitaxial growth, a prominent synthesis strategy, enables the production of large-area, high-quality 2D films compatible with advanced integrated circuits. Typical 2D single crystals, such as graphene, transition metal dichalcogenides and hexagonal boron nitride, have been epitaxially grown at a wafer scale. A systematic summary is required to offer strategic guidance for the epitaxy of emerging 2D materials. Here we focus on the epitaxy methodologies for 2D vdW materials in two directions: the growth of in-plane single-crystal monolayers and the fabrication of out-of-plane homostructures. We first discuss nucleation control of a single domain and orientation control over multiple domains to achieve large-scale single-crystal monolayers. We analyse the defect levels and measures of crystalline quality of typical 2D vdW materials with various epitaxial growth techniques. We then outline technical routes for the growth of homogeneous multilayers and twisted homostructures. We further summarize the current strategies to guide future efforts in optimizing on-demand fabrication of 2D vdW materials, as well as subsequent device manufacturing for their industrial applications.
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Affiliation(s)
- Can Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Department of Physics, Renmin University of China, Beijing, China
| | - Tianyao Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Zhibin Zhang
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China
| | - Zhipei Sun
- Department of Electronics and Nanoengineering, Quantum Technology Finland Centre of Excellence, Aalto University, Espoo, Finland
| | - Guangyu Zhang
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Dongguan, China
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China
| | - Enge Wang
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Dongguan, China
- International Center for Quantum Materials, Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, China
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing, China.
- Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Dongguan, China.
- Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing, China.
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5
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Wright S, Brea C, Baxter JS, Saini S, Alsaç EP, Yoon SG, Boebinger MG, Hu G, McDowell MT. Epitaxial Metal Electrodeposition Controlled by Graphene Layer Thickness. ACS NANO 2024; 18:13866-13875. [PMID: 38751199 PMCID: PMC11140832 DOI: 10.1021/acsnano.4c02981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 05/29/2024]
Abstract
Control over material structure and morphology during electrodeposition is necessary for material synthesis and energy applications. One approach to guide crystallite formation is to take advantage of epitaxy on a current collector to facilitate crystallographic control. Single-layer graphene on metal foils can promote "remote epitaxy" during Cu and Zn electrodeposition, resulting in growth of metal that is crystallographically aligned to the substrate beneath graphene. However, the substrate-graphene-deposit interactions that allow for epitaxial electrodeposition are not well understood. Here, we investigate how different graphene layer thicknesses (monolayer, bilayer, trilayer, and graphite) influence the electrodeposition of Zn and Cu. Scanning transmission electron microscopy and electron backscatter diffraction are leveraged to understand metal morphology and structure, demonstrating that remote epitaxy occurs on mono- and bilayer graphene but not trilayer or thicker. Density functional theory (DFT) simulations reveal the spatial electronic interactions through thin graphene that promote remote epitaxy. This work advances our understanding of electrochemical remote epitaxy and provides strategies for improving control over electrodeposition.
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Affiliation(s)
- Salem
C. Wright
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Courtney Brea
- Department
of Chemistry and Biochemistry, Queens College
of the City University of New York, New York, New York 11367, United States
| | - Jefferey S. Baxter
- Center
for Nanophase Materials Sciences, Oak Ridge
National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Sonakshi Saini
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Elif Pınar Alsaç
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Sun Geun Yoon
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Matthew G. Boebinger
- Center
for Nanophase Materials Sciences, Oak Ridge
National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Guoxiang Hu
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Matthew T. McDowell
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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6
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Jeevanandham S, Kochhar D, Agrawal O, Pahari S, Kar C, Goswami T, Sulania I, Mukherjee M. Unravelling the formation of carbyne nanocrystals from graphene nanoconstrictions through the hydrothermal treatment of agro-industrial waste molasses. NANOSCALE ADVANCES 2024; 6:2390-2406. [PMID: 38694474 PMCID: PMC11059479 DOI: 10.1039/d4na00076e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/19/2024] [Indexed: 05/04/2024]
Abstract
The delicate synthesis of one-dimensional (1D) carbon nanostructures from two-dimensional (2D) graphene moiré layers holds tremendous interest in materials science owing to its unique physiochemical properties exhibited during the formation of hybrid configurations with sp-sp2 hybridization. However, the controlled synthesis of such hybrid sp-sp2 configurations remains highly challenging. Therefore, we employed a simple hydrothermal technique using agro-industrial waste as the carbon source to synthesize 1D carbyne nanocrystals from the nanoconstricted zones of 2D graphene moiré layers. By employing suite of characterization techniques, we delineated the mechanism of carbyne nanocrystal formation, wherein the origin of carbyne nanochains was deciphered from graphene intermediates due to the presence of a hydrothermally cut nanoconstriction regime engendered over well-oriented graphene moiré patterns. The autogenous hydrothermal pressurization of agro-industrial waste under controlled conditions led to the generation of epoxy-rich graphene intermediates, which concomitantly gave rise to carbyne nanocrystal formation in oriented moiré layers with nanogaps. The unique growth of carbyne nanocrystals over a few layers of holey graphene exhibits excellent paramagnetic properties, the predominant localization of electrons and interfacial polarization effects. Further, we extended the application of the as-synthesized carbyne product (Cp) for real-time electrochemical-based toxic metal (As3+) sensing in groundwater samples (from riverbanks), which depicted superior sensitivity (0.22 mA μM-1) even at extremely lower concentrations (0.0001 μM), corroborating the impedance spectroscopy analysis.
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Affiliation(s)
- Sampathkumar Jeevanandham
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh Noida 201301 India
| | - Dakshi Kochhar
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh Noida 201301 India
| | - Omnarayan Agrawal
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh Noida 201301 India
| | - Siddhartha Pahari
- Department of Chemical Engineering & Applied Chemistry 200 College Street Toronto ON M5S 3E5 Canada
| | - Chirantan Kar
- Amity Institute of Applied Science, Amity University Kolkata Kolkata West Bengal 700135 India
| | - Tamal Goswami
- Department of Chemistry, Raiganj University Uttar Dinajpur Raiganj West Bengal 733134 India
| | - Indra Sulania
- Inter University Accelerator Centre Vasant Kunj New Delhi Delhi 110067 India
| | - Monalisa Mukherjee
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh Noida 201301 India
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7
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Zeng L, Han L, Nan W, Song W, Luo S, Wu YF, Su JJ, Zhan D. Regulation of heterogeneous electron transfer reactivity by defect engineering through electrochemically induced brominating addition. Chem Sci 2023; 15:95-101. [PMID: 38131067 PMCID: PMC10731907 DOI: 10.1039/d3sc03920j] [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: 07/28/2023] [Accepted: 11/08/2023] [Indexed: 12/23/2023] Open
Abstract
Enhancing the electrochemical activity of graphene holds great significance for expanding its applications in various electrochemistry fields. In this study, we have demonstrated a facile and quantitative approach for modulating the defect density of single-layer graphene (SLG) via an electrochemically induced bromination process facilitated by cyclic voltammetry. This controlled defect engineering directly impacts the heterogeneous electron transfer (HET) rate of SLG. By utilizing Raman spectroscopy and scanning electrochemical microscopy (SECM), we have established a correlation between the HET kinetics and both the defect density (nD) and mean distance between defects (LD) of SLG. The variation of the HET rate (k0) with the defect density manifested a distinctive three-stage behavior. Initially, k0 increased slightly with the increasing nD, and then it experienced a rapid increase as nD further increased. However, once the defect density surpassed a critical value of about 1.8 × 1012 cm-2 (LD < 4.2 nm), k0 decreased rapidly. Notably, the results revealed a remarkable 35-fold enhancement of k0 under the optimal defect density conditions compared to pristine SLG. This research paves the way for controllable defect engineering as a powerful strategy to enhance the electrochemical activity of graphene, opening up new possibilities for its utilization in a wide range of electrochemical applications.
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Affiliation(s)
- Lanping Zeng
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
- Fujian Science & Technology Innovation Laboratory for Energy Materials of China (Tan Kah Kee Innovation Laboratory) Xiamen 361005 China
| | - Lianhuan Han
- Department of Mechanical and Electrical Engineering, Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University Xiamen 361005 China
| | - Wenjing Nan
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Weiying Song
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Shiyi Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Yuan-Fei Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Jian-Jia Su
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Dongping Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces (PCOSS), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
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8
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He Q, Sheng B, Zhu K, Zhou Y, Qiao S, Wang Z, Song L. Phase Engineering and Synchrotron-Based Study on Two-Dimensional Energy Nanomaterials. Chem Rev 2023; 123:10750-10807. [PMID: 37581572 DOI: 10.1021/acs.chemrev.3c00389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
In recent years, there has been significant interest in the development of two-dimensional (2D) nanomaterials with unique physicochemical properties for various energy applications. These properties are often derived from the phase structures established through a range of physical and chemical design strategies. A concrete analysis of the phase structures and real reaction mechanisms of 2D energy nanomaterials requires advanced characterization methods that offer valuable information as much as possible. Here, we present a comprehensive review on the phase engineering of typical 2D nanomaterials with the focus of synchrotron radiation characterizations. In particular, the intrinsic defects, atomic doping, intercalation, and heterogeneous interfaces on 2D nanomaterials are introduced, together with their applications in energy-related fields. Among them, synchrotron-based multiple spectroscopic techniques are emphasized to reveal their intrinsic phases and structures. More importantly, various in situ methods are employed to provide deep insights into their structural evolutions under working conditions or reaction processes of 2D energy nanomaterials. Finally, conclusions and research perspectives on the future outlook for the further development of 2D energy nanomaterials and synchrotron radiation light sources and integrated techniques are discussed.
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Affiliation(s)
- Qun He
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Beibei Sheng
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Kefu Zhu
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Yuzhu Zhou
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Sicong Qiao
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Zhouxin Wang
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Li Song
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
- Zhejiang Institute of Photonelectronics, Jinhua, Zhejiang 321004, China
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9
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Liu S, Liu Y, Holtzman L, Li B, Holbrook M, Pack J, Taniguchi T, Watanabe K, Dean CR, Pasupathy AN, Barmak K, Rhodes DA, Hone J. Two-Step Flux Synthesis of Ultrapure Transition-Metal Dichalcogenides. ACS NANO 2023; 17:16587-16596. [PMID: 37610237 DOI: 10.1021/acsnano.3c02511] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Two-dimensional transition-metal dichalcogenides (TMDs) have attracted tremendous interest due to the unusual electronic and optoelectronic properties of isolated monolayers and the ability to assemble diverse monolayers into complex heterostructures. To understand the intrinsic properties of TMDs and fully realize their potential in applications and fundamental studies, high-purity materials are required. Here, we describe the synthesis of TMD crystals using a two-step flux growth method that eliminates a major potential source of contamination. Detailed characterization of TMDs grown by this two-step method reveals charged and isovalent defects with densities an order of magnitude lower than those in TMDs grown by a single-step flux technique. For WSe2, we show that increasing the Se/W ratio during growth reduces point defect density, with crystals grown at 100:1 ratio achieving charged and isovalent defect densities below 1010 and 1011 cm-2, respectively. Initial temperature-dependent electrical transport measurements of monolayer WSe2 yield room-temperature hole mobility above 840 cm2/(V s) and low-temperature disorder-limited mobility above 44,000 cm2/(V s). Electrical transport measurements of graphene-WSe2 heterostructures fabricated from the two-step flux grown WSe2 also show superior performance: higher graphene mobility, lower charged impurity density, and well-resolved integer quantum Hall states. Finally, we demonstrate that the two-step flux technique can be used to synthesize other TMDs with similar defect densities, including semiconducting 2H-MoSe2 and 2H-MoTe2 and semimetallic Td-WTe2 and 1T'-MoTe2.
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Affiliation(s)
- Song Liu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Yang Liu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Luke Holtzman
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
| | - Baichang Li
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Madisen Holbrook
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Jordan Pack
- Department of Physics, Columbia University, New York, New York 10027, United States
| | - Takashi Taniguchi
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
| | - Kenji Watanabe
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
| | - Cory R Dean
- Department of Physics, Columbia University, New York, New York 10027, United States
| | - Abhay N Pasupathy
- Department of Physics, Columbia University, New York, New York 10027, United States
| | - Katayun Barmak
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
| | - Daniel A Rhodes
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - James Hone
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
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10
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Jena M, Mallick S, Rath A, Dalai MK, Das DP. GQD@NiFe-LDH Nanosheets for Photocatalytic Activity towards Textile Dye Degradation via Lattice Contraction. Chempluschem 2023; 88:e202300276. [PMID: 37592812 DOI: 10.1002/cplu.202300276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/19/2023]
Abstract
The functionalized NiFe-LDH with photosensitized GQDs were synthesized through the hydrothermal route by differing the amount of GQDs solution and studied its efficacy towards the mineralization of textile dyes under visible light. The synthesized samples were characterized by XRD, FESEM, HRTEM, DRUV-Vis, RAMAN, XPS, and BET. The combined effect of the hexagonal carbon lattice in GQD and open layered porous structure of NiFe-LDH nanosheets results in the contraction of the lattice. Different reactive and conventional dyes were taken as representative dyes to evaluate the activity of the as-synthesized photocatalysts. The enhanced electron absorption/donor effect between GQDs and NiFe-LDH, and the growth of oxygen-bridged Ni/Fe-C moieties enable the composite to exhibit better photocatalytic activity. Both photocatalytic activity and characterization results confirmed that the GQD@NiFe-LDH nanocomposite heterostructure synthesized at 160 °C by taking 10 mL of GQDs aqueous solution named GNFLDH10 has a higher degree of crystallinity and has the best photocatalytic efficiency compared to other reported visible light catalysts. Specifically, the above optimized GQD@NiFe-LDH photocatalyst is capable of photo-mineralizing 50 ppm of Reactive Green in 20 min, Reactive Red in 20 min, and Congo Red in 25 min respectively following a direct Z-scheme mechanism with substantial reusability.
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Affiliation(s)
- Manasi Jena
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Sagar Mallick
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Ashutosh Rath
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Manas Kumar Dalai
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Dipti P Das
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
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11
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Yu W, Yoshii T, Aziz A, Tang R, Pan Z, Inoue K, Kotani M, Tanaka H, Scholtzová E, Tunega D, Nishina Y, Nishioka K, Nakanishi S, Zhou Y, Terasaki O, Nishihara H. Edge-Site-Free and Topological-Defect-Rich Carbon Cathode for High-Performance Lithium-Oxygen Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2300268. [PMID: 37029464 PMCID: PMC10238210 DOI: 10.1002/advs.202300268] [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: 01/12/2023] [Revised: 03/07/2023] [Indexed: 06/04/2023]
Abstract
The rational design of a stable and catalytic carbon cathode is crucial for the development of rechargeable lithium-oxygen (LiO2 ) batteries. An edge-site-free and topological-defect-rich graphene-based material is proposed as a pure carbon cathode that drastically improves LiO2 battery performance, even in the absence of extra catalysts and mediators. The proposed graphene-based material is synthesized using the advanced template technique coupled with high-temperature annealing at 1800 °C. The material possesses an edge-site-free framework and mesoporosity, which is crucial to achieve excellent electrochemical stability and an ultra-large capacity (>6700 mAh g-1 ). Moreover, both experimental and theoretical structural characterization demonstrates the presence of a significant number of topological defects, which are non-hexagonal carbon rings in the graphene framework. In situ isotopic electrochemical mass spectrometry and theoretical calculations reveal the unique catalysis of topological defects in the formation of amorphous Li2 O2 , which may be decomposed at low potential (∼ 3.6 V versus Li/Li+ ) and leads to improved cycle performance. Furthermore, a flexible electrode sheet that excludes organic binders exhibits an extremely long lifetime of up to 307 cycles (>1535 h), in the absence of solid or soluble catalysts. These findings may be used to design robust carbon cathodes for LiO2 batteries.
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Affiliation(s)
- Wei Yu
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Takeharu Yoshii
- Institute of Multidisciplinary Research for Advanced MaterialsTohoku UniversitySendai9808577Japan
| | - Alex Aziz
- JSPS International Research Fellow (Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Rui Tang
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Zheng‐Ze Pan
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Kazutoshi Inoue
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Motoko Kotani
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
| | - Hideki Tanaka
- Research Initiative for Supra‐Materials (RISM)Shinshu UniversityNagano3808553Japan
| | - Eva Scholtzová
- Institute of Inorganic Chemistry of Slovak Academy of SciencesDúbravská cesta 9Bratislava84536Slovakia
| | - Daniel Tunega
- Institute of Soil ResearchUniversity of Natural Resources and Life SciencesPeter‐Jordan‐Strasse 82Wien1190Austria
| | - Yuta Nishina
- Research Core for Interdisciplinary SciencesOkayama University3‐1‐1 Tsushima‐NakaKita‐kuOkayama7008530Japan
| | - Kiho Nishioka
- Research Center for Solar Energy ChemistryGraduate School of Engineering ScienceOsaka UniversityToyonakaOsaka5608531Japan
| | - Shuji Nakanishi
- Research Center for Solar Energy ChemistryGraduate School of Engineering ScienceOsaka UniversityToyonakaOsaka5608531Japan
- Innovative Catalysis Science DivisionInstitute for Open and Transdisciplinary Research Initiatives (ICS‐OTRI)Osaka UniversitySuitaOsaka5650871Japan
| | - Yi Zhou
- Centre for High‐Resolution Electron Microscopy (CℏEM)School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China
- Shanghai Key Laboratory of High‐Resolution Electron MicroscopyShanghaiTech UniversityShanghai201210China
| | - Osamu Terasaki
- Centre for High‐Resolution Electron Microscopy (CℏEM)School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China
- Shanghai Key Laboratory of High‐Resolution Electron MicroscopyShanghaiTech UniversityShanghai201210China
| | - Hirotomo Nishihara
- Advanced Institute for Materials Research (WPI‐AIMR)Tohoku UniversitySendai9808577Japan
- Institute of Multidisciplinary Research for Advanced MaterialsTohoku UniversitySendai9808577Japan
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12
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Xie Y, Yu C, Ni L, Yu J, Zhang Y, Qiu J. Carbon-Hybridized Hydroxides for Energy Conversion and Storage: Interface Chemistry and Manufacturing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209652. [PMID: 36575967 DOI: 10.1002/adma.202209652] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Carbon-hybridized hydroxides (CHHs) have been intensively investigated for uses in the energy conversion/storage fields. Nevertheless, the intrinsic structure-activity relationships between carbon and hydroxides within CHHs are still blurry, which hinders the fine modulation of CHHs in terms of practical applications to some degree. This review aims to figure out the intrinsic role of carbon materials in CHHs with a focus on the interface chemistry and the engineering strategy in-between two components. The fundamental effects of the carbon materials in enhancing the charge/mass transfer kinetics are first analyzed, particularly the extra electron pathways for fast charge transfer and the anchoring sites for boosting the mass transfer. Subsequently, the surface-guided/confined effects of carbon materials in CHHs to modify the morphology and tailor the hydroxides, and functional heterojunction for regulating the inner electronic structure are decoupled. The methods to efficiently construct a stable yet robust solid-solid heterointerface are summarized, including oxygen functional groups engrafting, topological defective sites construction and heteroatom incorporation to activate the inert carbon surface. The smart CHHs in some typical energy applications are demonstrated. Additionally, the methodologies that can reveal the hybridization electron configuration between two components are summed up. At last, the perspective and challenges faced by the CHHs for energy-related applications are outlined.
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Affiliation(s)
- Yuanyang Xie
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Chang Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Lin Ni
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinhe Yu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yafang Zhang
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jieshan Qiu
- State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- College of Chemical Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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13
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Pulsed laser deposited V2O3 thin-films on graphene/aluminum foil for micro-battery applications. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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14
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Thin-Film Carbon Nitride (C2N)-Based Solar Cell Optimization Considering Zn1−xMgxO as a Buffer Layer. Processes (Basel) 2022. [DOI: 10.3390/pr11010091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Carbon nitride (C2N), a two-dimensional material, is rapidly gaining popularity in the photovoltaic (PV) research community owing to its excellent properties, such as high thermal and chemical stability, non-toxic composition, and low fabrication cost over other thin-film solar cells. This study uses a detailed numerical investigation to explore the influence of C2N-based solar cells with zinc magnesium oxide (Zn1−xMgxO) as a buffer layer. The SCAPS-1D simulator is utilized to examine the performance of four Mg-doped buffer layers (x = 0.0625, 0.125, 0.1875, and 0.25) coupled with the C2N-based absorber layer. The influence of the absorber and buffer layers’ band alignment, quantum efficiency, thickness, doping density, defect density, and operating temperature are analyzed to improve the cell performance. Based on the simulations, increasing the buffer layer Mg concentration above x = 0.1875 reduces the device performance. Furthermore, it is found that increasing the absorber layer thickness is desirable for good device efficiency, whereas a doping density above 1015 cm−3 can degrade the cell performance. After optimization of the buffer layer thickness and doping density at 40 nm and 1018 cm−3, the cell displayed its maximum performance. Among the four structures, C2N/Zn0.8125Mg0.1875O demonstrated the highest PCE of 19.01% with a significant improvement in open circuit voltage (Voc), short circuit density (Jsc), and fill factor (FF). The recorded results are in good agreement with the standard theoretical studies.
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15
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Pavlov S, Kozhevnikova E, Kislenko S. Effect of the number of graphene layers on the electron transfer kinetics at metal/graphene heterostructures. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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16
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Jamilan MA, Abdullah J, Alang Ahmad SA, Md Noh MF. Enhanced electrochemical detection of iodide at a reduced graphene oxide-modified carbon electrode in iodized salts. Food Chem 2022; 393:133382. [PMID: 35667176 DOI: 10.1016/j.foodchem.2022.133382] [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: 07/29/2021] [Revised: 05/29/2022] [Accepted: 05/31/2022] [Indexed: 11/19/2022]
Abstract
In this study, enhancement of electrochemical performance of electrochemically reduced graphene oxide (ERGO) on a screen-printed carbon electrode (SPCE) (ERGO/SPCE) coupled with ion-pairing (cetyltrimethylammonium bromide, CTAB) for the determination of iodide in table salt has been described. The electrode modification of ERGO/SPCE was conducted using cyclic voltammetric (CV) scanning in the potential range of 1.3-0.4 V for 50 cycles after the drop-casting of graphene oxide (GO) suspension on the SPCE. It was found that the electro-active surface area of ERGO/SPCE was increased by 1.5-fold compared to the bare SPCE. ERGO/SPCE sensor displays linearity towards iodide in the concentration range from 0.020 to 1.0 mg/L (sensitivity = 5.40 µA(mg/L)-1, R2 = 0.9906) with the limit of detection (LOD) and limit of quantitation (LOQ) of 0.070 mg/L and 0.21 mg/L, respectively. The comparison between polarography and ERGO/SPCE sensor was in good agreement.
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Affiliation(s)
- Mohd Azerulazree Jamilan
- Nutrition, Metabolism and Cardiovascular Research Centre, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, No. 1, Jalan Setia Murni U13/52, Setia Alam, 40170 Shah Alam, Selangor D.E., Malaysia; Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia
| | - Jaafar Abdullah
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia; Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia.
| | - Shahrul Ainliah Alang Ahmad
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia; Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor D.E., Malaysia
| | - Mohd Fairulnizal Md Noh
- Nutrition, Metabolism and Cardiovascular Research Centre, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, No. 1, Jalan Setia Murni U13/52, Setia Alam, 40170 Shah Alam, Selangor D.E., Malaysia
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17
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Pavlov SV, Kozhevnikova YO, Kislenko VA, Kislenko SA. Modulation of the kinetics of outer-sphere electron transfer at graphene by a metal substrate. Phys Chem Chem Phys 2022; 24:25203-25213. [PMID: 36254968 DOI: 10.1039/d2cp03771h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Solid-supported graphene is a typical configuration of electrochemical devices based on single-layer graphene. Therefore, it is necessary to understand the electrochemical features of such heterostructures. In this work, we theoretically investigated the effect of the metal type on the nonadiabatic electron transfer (ET) at the metal-supported graphene using DFT calculations. We considered five metals Au, Ag, Pt, Cu, and Al on which graphene is physically adsorbed. It is shown that all metals catalyze the ET. The electrocatalytic effect increases in the following series Al < Au ≲ Ag ≈ Cu < Pt. The enhanced ET in the presence of the metal substrate is explained by the hybridization of metal and graphene states, due to which the coupling between the reactant in an electrolyte and metal is increased. Metal-dependent electrocatalytic effect is explained both by different densities of states at the Fermi level of the systems and by differences in the behaviour of the tails of hybridized wave functions in the electrolyte region. The shift of the Fermi level with respect to the Dirac point in graphene when charging at the metal/graphene/electrolyte interface does not affect the kinetics due to the small contribution of graphene states to the electron transfer.
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Affiliation(s)
- Sergey V Pavlov
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Yekaterina O Kozhevnikova
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Vitaliy A Kislenko
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Nobel Str. 3, Moscow, 143026, Russian Federation.,Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Sergey A Kislenko
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
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18
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Choi K, Kim S. Theoretical Study of Oxygen Reduction Reaction Mechanism in Metal-Free Carbon Materials: Defects, Structural Flexibility, and Chemical Reaction. ACS NANO 2022; 16:16394-16401. [PMID: 36219762 DOI: 10.1021/acsnano.2c05607] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Metal-free carbon materials are attractive Pt-based catalyst alternatives. However, despite efforts, the reaction mechanism remains elusive. Thus, we investigated the role of defects (dopant nitrogen and carbon vacancy) on the catalytic oxygen reduction reaction in a metal-free carbon material focusing on the effect of structural flexibility. Crucially, defects lower the energy barrier for the sp2/sp3 transition of the carbon-centered O2-adsorption sites by releasing structural strain during the reaction. In particular, low-coordinated pyridinic-N displaces from the carbon plane to release the strain, whereas weak C-C bonds around the carbon vacancy change the bond lengths to release the strain. Defects indirectly promote the adsorption of oxygen by enhancing structural flexibility. Thus, the nonlocal structural environment is as critical as the direct interaction between adsorption sites and adsorbate in the chemical reaction. Molecular dynamics simulations reveal that pyridinic-N doping is a facile route to introduce stable catalytic active sites. Overall, our results provide a deeper understanding of chemical processes on defective carbon materials.
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Affiliation(s)
- Keunsu Choi
- Department of Physics, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Seungchul Kim
- Computational Science Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
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19
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Pavlov SV, Kislenko VA, Kislenko SA. Effect of a Graphene Vacancy on the Kinetics of Heterogeneous Electron Transfer. HIGH ENERGY CHEMISTRY 2022. [DOI: 10.1134/s0018143922050137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Li WZ, He Y, Mao Y, Xiong K. Electronic Properties and Electrocatalytic Water Splitting Activity for Precious-Metal-Adsorbed Silicene with Nonmetal Doping. ACS OMEGA 2022; 7:33156-33166. [PMID: 36157726 PMCID: PMC9494430 DOI: 10.1021/acsomega.2c03388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/11/2022] [Indexed: 06/16/2023]
Abstract
Since nonmetal (NM)-doped two-dimensional (2D) materials can effectively modulate their physical properties and chemical activities, they have received a lot of attention from researchers. Therefore, the stability, electronic properties, and electrocatalytic water splitting activity of precious-metal (PM)-adsorbed silicene doped with two NM atoms are investigated based on density functional theory (DFT) in this paper. The results show that NM doping can effectively improve the stability of PM-adsorbed silicene and exhibit rich electronic properties. Meanwhile, by comparing the free energies of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) intermediates of 15 more stable NM-doped systems, it can be concluded that the electrocatalytic water splitting activity of the NM-doped systems is more influenced by the temperature. Moreover, the Si-S2-Ir-doped system exhibits good HER performance when the temperature is 300 K, while the Si-N2-Pt-doped system shows excellent OER activity. Our theoretical study shows that NM doping can effectively promote the stability and electrocatalytic water splitting of PM-adsorbed silicene, which can help in the application of silicene in electrocatalytic water splitting.
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Affiliation(s)
- Wen-Zhong Li
- Department
of Physics, Yunnan University, Kunming 650091, China
| | - Yao He
- Department
of Physics, Yunnan University, Kunming 650091, China
| | - Yong Mao
- Materials
Genome Institute, School of Materials and Energy, Yunnan University, Kunming 650091, China
| | - Kai Xiong
- Materials
Genome Institute, School of Materials and Energy, Yunnan University, Kunming 650091, China
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21
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Liu Z, Navik R, Tan H, Xiang Q, Wahyudiono, Goto M, Ibarra RM, Zhao Y. Graphene-based materials prepared by supercritical fluid technology and its application in energy storage. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Inozemtseva AI, Sergeev AV, Napolskii KS, Kushnir SE, Belov V, Itkis DM, Usachov DY, Yashina LV. Graphene electrochemistry: ‘Adiabaticity’ of electron transfer. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Lee HY, Haidari MM, Kee EH, Choi JS, Park BH, Campbell EEB, Jhang SH. Charge Transport in UV-Oxidized Graphene and Its Dependence on the Extent of Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2845. [PMID: 36014709 PMCID: PMC9415921 DOI: 10.3390/nano12162845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/15/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Graphene oxides with different degrees of oxidation are prepared by controlling UV irradiation on graphene, and the charge transport and the evolution of the transport gap are investigated according to the extent of oxidation. With increasing oxygenous defect density nD, a transition from ballistic to diffusive conduction occurs at nD≃1012 cm-2 and the transport gap grows in proportion to nD. Considering the potential fluctuation related to the e-h puddle, the bandgap of graphene oxide is deduced to be Eg≃30nD(1012cm-2) meV. The temperature dependence of conductivity showed metal-insulator transitions at nD≃0.3×1012 cm-2, consistent with Ioffe-Regel criterion. For graphene oxides at nD≥4.9×1012 cm-2, analysis indicated charge transport occurred via 2D variable range hopping conduction between localized sp2 domain. Our work elucidates the transport mechanism at different extents of oxidation and supports the possibility of adjusting the bandgap with oxygen content.
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Affiliation(s)
- Hwa Yong Lee
- School of Physics, Konkuk University, Seoul 05029, Korea
| | | | - Eun Hee Kee
- School of Physics, Konkuk University, Seoul 05029, Korea
| | - Jin Sik Choi
- School of Physics, Konkuk University, Seoul 05029, Korea
| | - Bae Ho Park
- School of Physics, Konkuk University, Seoul 05029, Korea
| | - Eleanor E. B. Campbell
- EaStCHEM, School of Chemistry, Edinburgh University, David Brewster Road, Edinburgh EH9 3FJ, UK
| | - Sung Ho Jhang
- School of Physics, Konkuk University, Seoul 05029, Korea
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24
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Joshi P, Shukla S, Gupta S, Riley PR, Narayan J, Narayan R. Excimer Laser Patterned Holey Graphene Oxide Films for Nonenzymatic Electrochemical Sensing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:37149-37160. [PMID: 35930801 DOI: 10.1021/acsami.2c09096] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The existence of point defects, holes, and corrugations (macroscopic defects) induces high catalytic potential in graphene and its derivatives. We report a systematic approach for microscopic and macroscopic defect density optimization in excimer laser-induced reduced graphene oxide by varying the laser energy density and pulse number to achieve a record detection limit of 7.15 nM for peroxide sensing. A quantitative estimation of point defect densities was obtained using Raman spectroscopy and confirmed with electrochemical sensing measurements. Laser annealing (LA) at 0.6 J cm-2 led to the formation of highly reduced graphene oxide (GO) by liquid-phase regrowth of molten carbon with the presence of dangling bonds, making it catalytically active. Hall-effect measurements yielded a mobility of ∼200 cm2 V-1 s-1. An additional increase in the number of pulses at 0.6 J cm-2 resulted in deoxygenation through the solid-state route, leading to the formation of holey graphene structure. The average hole size showed a hierarchical increase, with the number of pulses characterized with multiple microscopy techniques, including scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. The exposure of edge sites due to high hole density after 10 pulses supported the formation of proximal diffusion layers, which led to facile mass transfer and improvement in the detection limit from 25.4 mM to 7.15 nM for peroxide sensing. However, LA at 1 J cm-2 with 1 pulse resulted in a high melt lifetime of molten carbon and the formation of GO characterized by a high resistivity of 3 × 10-2 Ω-cm, which was not ideal for sensing applications. The rapid thermal annealing technique using a batch furnace to generate holey graphene results in structure with uneven hole sizes. However, holey graphene formation using the LA technique is scalable with better control over hole size and density. This study will pave the path for cost-efficient and high-performance holey graphene sensors for advanced sensing applications.
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Affiliation(s)
- Pratik Joshi
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
- Intel Corporation, Rolner Acres Campus 3, Hillsboro, Oregon 97124, United States
| | - Shubhangi Shukla
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
| | - Siddharth Gupta
- Intel Corporation, Rolner Acres Campus 3, Hillsboro, Oregon 97124, United States
| | - Parand R Riley
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
| | - Jagdish Narayan
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
| | - Roger Narayan
- Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, North Carolina 27695-7907, United States
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25
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Wu Y, Guo K, Zhao J, Duan Q, Wang F, Lu K. Highly sensitive and selective electrochemical detection of clothianidin using reduced graphene oxide-anionic pillar[6]arene composite film. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Cao B, Li FZ, Gu J. Designing Cu-Based Tandem Catalysts for CO 2 Electroreduction Based on Mass Transport of CO Intermediate. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Bo Cao
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Fu-Zhi Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jun Gu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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27
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Wu Q, Jia Y, Liu Q, Mao X, Guo Q, Yan X, Zhao J, Liu F, Du A, Yao X. Ultra-dense carbon defects as highly active sites for oxygen reduction catalysis. Chem 2022. [DOI: 10.1016/j.chempr.2022.06.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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Kanagavalli P, Pandey GR, Murugan P, Veerapandian M. Electrochemical and DFT studies of andrographolide on electrochemically reduced graphene oxide for anti-viral herbaceutical sensor. Anal Chim Acta 2022; 1209:339877. [DOI: 10.1016/j.aca.2022.339877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/18/2022] [Accepted: 04/22/2022] [Indexed: 11/15/2022]
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29
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Huang S, Li S, Liu Y, Ghalandari B, Hao L, Huang C, Su W, Ke Y, Cui D, Zhi X, Ding X. Encountering and Wrestling: Neutrophils Recognize and Defensively Degrade Graphene Oxide. Adv Healthc Mater 2022; 11:e2102439. [PMID: 34859964 DOI: 10.1002/adhm.202102439] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 11/26/2021] [Indexed: 01/08/2023]
Abstract
The boosting exploitation of graphene oxide (GO) increases exposure risk to human beings. However, as primary defender in the first immune line, neutrophils' mechanism of defensive behavior toward GO remains unclear. Herein, we discovered that neutrophils recognize and defensively degrade GO in a lateral dimension dependent manner. The micrometer-sized GO (mGO) induces NETosis by releasing neutrophil extracellular traps (NETs), while nanometer-sized GO (nGO) elicits neutrophil degranulation. The two neutrophils' defensive behaviors are accompanied with generation of reactive oxygen species and activation of p-ERK and p-Akt kinases. However, mGO-induced NETosis is NADPH oxidase (NOX)-independent while nGO-triggered degranulation is NOX-dependent. Furthermore, myeloperoxidase (MPO) is determinant mediator despite distinct neutrophil phenotypes. Neutrophils release NETs comprising of MPO upon activated with mGO, while MPO is secreted via nGO-induced degranulation. Moreover, the binding energy between MPO and GO is calculated to be 69.8728 kJ mol-1 , indicating that electrostatic interactions mainly cause the spontaneous binding process. Meanwhile, the central enzymatic biodegradation occurs at oxygenic active sites and defects on GO. Mass spectrometry analysis deciphers the degradation products are biocompatible molecules like flavonoids and polyphenols. This study provides fundamental evidence and practical guidance for nanotechnology based on GO, including vaccine adjuvant, implantable devices, and energy storage.
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Affiliation(s)
- Shiyi Huang
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Sijie Li
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Yanlei Liu
- Shanghai Engineering Center for Intelligent Diagnosis and Treatment Instrument School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Behafarid Ghalandari
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Ling Hao
- Department of Chemistry George Washington University Washington D.C. 20052 USA
| | - Chengjie Huang
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Wenqiong Su
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Yuqing Ke
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Daxiang Cui
- Shanghai Engineering Center for Intelligent Diagnosis and Treatment Instrument School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 China
| | - Xiao Zhi
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
| | - Xianting Ding
- State Key laboratory of Oncogenes and Related Genes Institute for Personalized Medicine School of Biomedical Engineering Shanghai Jiao Tong University Shanghai 200030 China
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30
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Jin L, You S, Ren N, Liu Y. Selective Activation of Peroxymonosulfate to Singlet Oxygen by Engineering Oxygen Vacancy Defects in Ti3CNTx MXene for Effective Removal of Micropollutants in Water. FUNDAMENTAL RESEARCH 2022. [DOI: 10.1016/j.fmre.2022.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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31
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Tunable angle-dependent electrochemistry at twisted bilayer graphene with moiré flat bands. Nat Chem 2022; 14:267-273. [PMID: 35177786 DOI: 10.1038/s41557-021-00865-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 11/22/2021] [Indexed: 11/09/2022]
Abstract
Tailoring electron transfer dynamics across solid-liquid interfaces is fundamental to the interconversion of electrical and chemical energy. Stacking atomically thin layers with a small azimuthal misorientation to produce moiré superlattices enables the controlled engineering of electronic band structures and the formation of extremely flat electronic bands. Here, we report a strong twist-angle dependence of heterogeneous charge transfer kinetics at twisted bilayer graphene electrodes with the greatest enhancement observed near the 'magic angle' (~1.1°). This effect is driven by the angle-dependent tuning of moiré-derived flat bands that modulate electron transfer processes with the solution-phase redox couple. Combined experimental and computational analysis reveals that the variation in electrochemical activity with moiré angle is controlled by a structural relaxation of the moiré superlattice at twist angles of <2°, and 'topological defect' AA stacking regions, where flat bands are localized, produce a large anomalous local electrochemical enhancement that cannot be accounted for by the elevated local density of states alone.
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32
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Choutipalli VSK, Esackraj K, Subramanian V. Nitrogen Fixation at the Edges of Boron Nitride Nanomaterials: Synergy of Doping. Front Chem 2022; 9:799903. [PMID: 35127647 PMCID: PMC8814371 DOI: 10.3389/fchem.2021.799903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/20/2021] [Indexed: 11/21/2022] Open
Abstract
Synthesis of ammonia at ambient conditions is very demanding yet challenging to achieve due to the production of ammonia fuel, which is considered to be a future fuel for sustainable energy. In this context, computational studies on the catalytic activity of the edge sites of boron nitride nanomaterials for possible nitrogen reduction into ammonia have been investigated. Geometrical and electronic properties of zigzag and armchair B-open edges of BN sheet (BOE) models have been unraveled to substantiate their catalytic nature. Results reveal that BOE sites exhibit very high potential determining steps (PDS) of 2.0 eV. Doping of carbon (C) at the nitrogen center, which is vicinal to the BOE site reduces the PDS of the N2 reduction reaction (NRR) (to 1.18–1.33 eV) due to the regulation of charge distribution around the active BOE site. Further, the NRR at the C doped at various edge sites of a boron nitride sheet (BNS) has also been studied in detail. Among the 12 new C-doped defective BNS models, 9 model catalysts are useful for nitrogen activation through either chemisorption or physisorption. Among these, ZCN, ACN, and ZCBV models are efficient in catalyzing NRR with lower PDS of 0.86, 0.88, and 0.86 eV, respectively. The effect of carbon doping in tuning the potential requirements of NRR has been analyzed by comparing the relative stability of intermediates on the catalyst with and without carbon doping. Results reveal that C-doping destabilizes the intermediates compared to non-doped systems, thereby reducing the possibility of catalyst poisoning. However, their interactions with catalysts are good enough so that the NRR activity of the catalyst does not decrease due to C-doping.
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Affiliation(s)
- Venkata Surya Kumar Choutipalli
- Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai, India
- Centre for High Computing, CSIR-Central Leather Research Institute, Chennai, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Karthikraja Esackraj
- Centre for High Computing, CSIR-Central Leather Research Institute, Chennai, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Venkatesan Subramanian
- Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai, India
- Centre for High Computing, CSIR-Central Leather Research Institute, Chennai, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
- *Correspondence: Venkatesan Subramanian, ,
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33
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Jindra M, Velický M, Bouša M, Abbas G, Kalbáč M, Frank O. Localized Spectroelectrochemical Identification of Basal Plane and Defect-Related Charge-Transfer Processes in Graphene. J Phys Chem Lett 2022; 13:642-648. [PMID: 35020405 DOI: 10.1021/acs.jpclett.1c03466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It is well-known that structural defects play a decisive role in electrochemical behavior of atomically thin materials, where all the defects are directly accessible by the electrolyte. However, the vast majority of experimental techniques do not allow disentanglement of the processes at the edges/defects from those at the intact basal plane. Therefore, to address this issue, we introduce a localized spectroelectrochemical method featuring a microdroplet electrochemical cell with simultaneous Raman spectroscopy monitoring. The electrochemical and spectral responses of the basal planes of monolayer graphene samples with varying levels of disorder were compared. Two contributions, stemming from the intact and defective areas on the surface, respectively, were discovered both in the Raman G band shifts and cyclic voltammetry using the hexaammineruthenium complex. Consequently, two independent electron transfer processes of slower and faster rates coexist in one sample, but they are restricted to the defect-free and defect-rich areas, respectively.
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Affiliation(s)
- Martin Jindra
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
- Department of Physical Chemistry, University of Chemistry and Technology, 16628 Prague, Czech Republic
| | - Matěj Velický
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
- Department of Physics and Astronomy, University of Manchester, Oxford Road, M13 9PL Manchester, United Kingdom
| | - Milan Bouša
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
| | - Ghulam Abbas
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
- Department of Physical Chemistry and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Martin Kalbáč
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
| | - Otakar Frank
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 2155/3, 182 23 Prague, Czech Republic
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34
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Bu Q, Cai J, Vasudevan SV, Ni J, Mao H. Microwave-assisted synthesis of bio-based Ni@NSiC nanocomposites for high efficient electrocatalysis of glucose. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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35
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Grosser T, Wehrhold M, Neubert TJ, Balasubramanian K. Graphene‐Mercury‐Graphene Sandwich Electrode for Electroanalysis. ChemElectroChem 2021. [DOI: 10.1002/celc.202101290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tobias Grosser
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) & IRIS Adlershof Humboldt-Universität zu Berlin Unter den Linden 6 10117 Berlin Germany
| | - Michel Wehrhold
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) & IRIS Adlershof Humboldt-Universität zu Berlin Unter den Linden 6 10117 Berlin Germany
| | - Tilmann J. Neubert
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) & IRIS Adlershof Humboldt-Universität zu Berlin Unter den Linden 6 10117 Berlin Germany
| | - Kannan Balasubramanian
- Department of Chemistry School of Analytical Sciences Adlershof (SALSA) & IRIS Adlershof Humboldt-Universität zu Berlin Unter den Linden 6 10117 Berlin Germany
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36
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Nie W, Zhu Q, Gao Y, Wang Z, Liu Y, Wang X, Chen R, Fan F, Li C. Visualizing the Spatial Heterogeneity of Electron Transfer on a Metallic Nanoplate Prism. NANO LETTERS 2021; 21:8901-8909. [PMID: 34647747 DOI: 10.1021/acs.nanolett.1c03529] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The involvement between electron transfer (ET) and catalytic reaction at the electrocatalyst surface makes the electrochemical process challenging to understand and control. Even ET process, a primary step, is still ambiguous because it is unclear how the ET process is related to the nanostructured electrocatalyst. Herein, locally enhanced ET current dominated by mass transport effect at corner and edge sites bounded by {111} facets on single Au triangular nanoplates was clearly imaged. After decoupling mass transport effect, the ET rate constant of corner sites was measured to be about 2-fold that of basal {111} plane. Further, we demonstrated that spatial heterogeneity of local inner potential differences of Au nanoplates/solution interfaces plays a key role in the ET process, supported by the linear correlation between the logarithm of rate constants and the potential differences of different sites. These results provide direct images for heterogeneous ET, which helps to understand and control the nanoscopic electrochemical process and electrode design.
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Affiliation(s)
- Wei Nie
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianhong Zhu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuying Gao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Ziyuan Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yong Liu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Xun Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Ruotian Chen
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, The Collaborative Innovation Centre of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China
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37
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Kislenko SA, Pavlov SV, Nazmutdinov RR, Kislenko VA, Chekushkin PM. Effect of a Au underlayer on outer-sphere electron transfer across a Au/graphene/electrolyte interface. Phys Chem Chem Phys 2021; 23:22984-22991. [PMID: 34611675 DOI: 10.1039/d1cp03051e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The effect of a gold underlayer on the outer-sphere non-adiabatic electron transfer on a graphene surface is investigated theoretically using both periodic and cluster DFT calculations. We propose a model that describes the alignment of energy levels and charge redistribution at the metal/graphene/redox electrolyte interface. Model calculations were performed for the [Fe(CN)6]3-/4- and [Ru(NH3)6]3+/2+ redox couples. It is shown that the gold support increases the rate constant of electron transfer. Gold electronic states hybridize with graphene wave functions, which provides an effective overlap with reactant orbitals outside the graphene layer and favors an increasing reaction rate. Although the Fermi level shift relative to the Dirac point in graphene depends significantly on the redox couple, this weakly affects the electron transfer kinetics at the Au(111)/graphene/electrolyte interface due to a small contribution of graphene states to the rate constant as compared to gold ones.
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Affiliation(s)
- Sergey A Kislenko
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Sergey V Pavlov
- Center for Computational and Data-Intensive Science and Engineering, Skolkovo Institute of Science and Technology, Nobel Str. 3, Moscow, 143026, Russian Federation.,Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Renat R Nazmutdinov
- Kazan National Research Technological University, R. Marx Str. 68, 420015 Kazan, Republic of Tatarstan, Russian Federation
| | - Vitaliy A Kislenko
- Center for Computational and Data-Intensive Science and Engineering, Skolkovo Institute of Science and Technology, Nobel Str. 3, Moscow, 143026, Russian Federation.,Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
| | - Petr M Chekushkin
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13/2, Moscow, 125412, Russian Federation.
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38
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Arandiyan H, S Mofarah S, Sorrell CC, Doustkhah E, Sajjadi B, Hao D, Wang Y, Sun H, Ni BJ, Rezaei M, Shao Z, Maschmeyer T. Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science. Chem Soc Rev 2021; 50:10116-10211. [PMID: 34542117 DOI: 10.1039/d0cs00639d] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Oxide perovskites have emerged as an important class of materials with important applications in many technological areas, particularly thermocatalysis, electrocatalysis, photocatalysis, and energy storage. However, their implementation faces numerous challenges that are familiar to the chemist and materials scientist. The present work surveys the state-of-the-art by integrating these two viewpoints, focusing on the critical role that defect engineering plays in the design, fabrication, modification, and application of these materials. An extensive review of experimental and simulation studies of the synthesis and performance of oxide perovskites and devices containing these materials is coupled with exposition of the fundamental and applied aspects of defect equilibria. The aim of this approach is to elucidate how these issues can be integrated in order to shed light on the interpretation of the data and what trajectories are suggested by them. This critical examination has revealed a number of areas in which the review can provide a greater understanding. These include considerations of (1) the nature and formation of solid solutions, (2) site filling and stoichiometry, (3) the rationale for the design of defective oxide perovskites, and (4) the complex mechanisms of charge compensation and charge transfer. The review concludes with some proposed strategies to address the challenges in the future development of oxide perovskites and their applications.
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Affiliation(s)
- Hamidreza Arandiyan
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia. .,Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Esmail Doustkhah
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Baharak Sajjadi
- Department of Chemical Engineering, University of Mississippi, University, MS, 38677, USA
| | - Derek Hao
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Yuan Wang
- Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia. .,School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Hongyu Sun
- Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby 2800, Denmark
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Mehran Rezaei
- Catalyst and Nanomaterials Research Laboratory (CNMRL), School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6845, Australia. .,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
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39
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Zheng B, Zheng Z, Gu GX. Scalable Graphene Defect Prediction Using Transferable Learning. NANOMATERIALS 2021; 11:nano11092341. [PMID: 34578657 PMCID: PMC8472110 DOI: 10.3390/nano11092341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/03/2021] [Accepted: 09/05/2021] [Indexed: 11/16/2022]
Abstract
Notably known for its extraordinary thermal and mechanical properties, graphene is a favorable building block in various cutting-edge technologies such as flexible electronics and supercapacitors. However, the almost inevitable existence of defects severely compromises the properties of graphene, and defect prediction is a difficult, yet important, task. Emerging machine learning approaches offer opportunities to predict target properties such as defect distribution by exploiting readily available data, without incurring much experimental cost. Most previous machine learning techniques require the size of training data and predicted material systems of interest to be identical. This limits their broader application, because in practice a newly encountered material system may have a different size compared with the previously observed ones. In this paper, we develop a transferable learning approach for graphene defect prediction, which can be used on graphene with various sizes or shapes not seen in the training data. The proposed approach employs logistic regression and utilizes data on local vibrational energy distributions of small graphene from molecular dynamics simulations, in the hopes that vibrational energy distributions can reflect local structural anomalies. The results show that our machine learning model, trained only with data on smaller graphene, can achieve up to 80% prediction accuracy of defects in larger graphene under different practical metrics. The present research sheds light on scalable graphene defect prediction and opens doors for data-driven defect detection for a broad range of two-dimensional materials.
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Affiliation(s)
- Bowen Zheng
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA;
| | - Zeyu Zheng
- Department of Industrial Engineering and Operations Research, University of California, Berkeley, CA 94720, USA;
| | - Grace X. Gu
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA;
- Correspondence:
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40
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Wang J, Yao Y, Zhang C, Sun Q, Cheng D, Huang X, Feng J, Wan J, Zou J, Liu C, Yu C. Superstructured Macroporous Carbon Rods Composed of Defective Graphitic Nanosheets for Efficient Oxygen Reduction Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100120. [PMID: 34323391 PMCID: PMC8456237 DOI: 10.1002/advs.202100120] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/27/2021] [Indexed: 05/10/2023]
Abstract
Rationally designed carbon materials with superstructures are promising candidates in applications such as electrocatalysis. However, the synthesis of highly porous carbon superstructures with macropores and carbon defects from a simple crystalline solid remains challenging. In this work, superstructured macroporous carbon rods composed of defective graphitic nanosheets are synthesized by direct carbonization of crystalline poly tannic acid (PTA) rods as precursors. During carbonization, PTA rods with a highly ordered lamellar structure induce a spatially confined two-step localized contraction that takes place in different dimensions and directions in each step. The unexpected contraction behavior results in the sponge-like macroporous carbon superstructure with large surface area, high porosity, and abundant defects, thus showing a superior electrocatalytic performance with high activity and selectivity for oxygen reduction reaction. The study provides new understandings in the design of functional carbon materials with distinctive structures and applications.
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Affiliation(s)
- Jing Wang
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources ReuseSchool of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing210094P. R. China
| | - Yining Yao
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
| | - Chaoqi Zhang
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
| | - Qiang Sun
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
- Centre for Microscopy and MicroanalysisThe University of QueenslandBrisbaneQueensland4072Australia
| | - Dan Cheng
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland4072Australia
| | - Xiaodan Huang
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland4072Australia
| | - Jiayou Feng
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
| | - Jingjing Wan
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
| | - Jin Zou
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
- Centre for Microscopy and MicroanalysisThe University of QueenslandBrisbaneQueensland4072Australia
| | - Chao Liu
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
| | - Chengzhong Yu
- School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200241P. R. China
- Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland4072Australia
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41
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Ding R, Lin L, Pei C, Yu X, Sun Q, Park HS. Hierarchical Architectures Based on Ru Nanoparticles/Oxygen-Rich-Carbon Nanotubes for Efficient Hydrogen Evolution. Chemistry 2021; 27:11150-11157. [PMID: 33999455 DOI: 10.1002/chem.202101108] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Indexed: 11/12/2022]
Abstract
Highly active and durable electrocatalysts are essential for producing hydrogen fuel through the hydrogen evolution reaction (HER). Here, a uniform deposition of Ru nanoparticles strongly interacting with oxygen-rich carbon nanotube architectures (Ru-OCNT) through ozonation and hydrothermal approaches has been designed. The hierarchical structure of Ru-OCNT is made by self-assembly of oxygen functionalities of OCNT. Ru nanoparticles interact strongly with OCNT at the Ru/OCNT interface to give excellent catalytic activity and stability of the Ru-OCNT, as further confirmed by density functional theory. Owing to the hierarchical structure and adjusted surface chemistry, Ru-OCNT has an overpotential of 34 mV at 10 mA cm-2 with a Tafel slope of 27.8 mV dec-1 in 1 M KOH, and an overpotential of 55 mV with Tafel slope of 33 mV dec-1 in 0.5 M H2 SO4 . The smaller Tafel slope of Ru-OCNT than Ru-CNT and commercial Pt/C in both alkaline and acidic electrolytes indicates high catalytic activity and fast charge transfer kinetics. The as-proposed chemistry provides the rational design of hierarchically structured CNT/nanoparticle electrocatalysts for HER to produce hydrogen fuel.
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Affiliation(s)
- Ruifu Ding
- School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou, 225002, P. R. China
| | - Longjie Lin
- School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou, 225002, P. R. China
| | - Chengang Pei
- School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou, 225002, P. R. China
| | - Xu Yu
- School of Chemistry and Chemical Engineering, Institute for Innovative Materials and Energy, Yangzhou University, Yangzhou, 225002, P. R. China
| | - Qijun Sun
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Ho Seok Park
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 440-746, Republic of Korea
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42
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Cuniberto E, Alharbi A, Huang Z, Wu T, Kiani R, Shahrjerdi D. Anomalous sensitivity enhancement of nano-graphitic electrochemical micro-sensors with reducing the operating voltage. Biosens Bioelectron 2021; 177:112966. [PMID: 33450612 DOI: 10.1016/j.bios.2021.112966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/13/2020] [Accepted: 12/31/2020] [Indexed: 11/15/2022]
Abstract
Microscopic interactions between electrochemical sensors and biomolecules critically influence the sensitivity. Here, we report an unexpected dependence of the sensitivity on the upper potential limit (UPL) in voltammetry experiments. In particular, we find that the sensitivity of substrate-supported nano-graphitic micro-sensors in response to dopamine increases almost linearly with the inverse of UPL in voltammetry experiments with rapid potential sweeps. Our experiments and multi-physics simulations reveal that the main cause behind this phenomenon is the UPL-induced electrostatic force that influences the steady-state number of dopamine molecules on the sensor surface. Our findings illustrate a new strategy for enhancing the performance of planar electrochemical micro-sensors.
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Affiliation(s)
- Edoardo Cuniberto
- Electrical and Computer Engineering, New York University, Brooklyn, NY, 11201, USA
| | - Abdullah Alharbi
- Electrical and Computer Engineering, New York University, Brooklyn, NY, 11201, USA; National Center for Nanotechnology and Semiconductors, KACST, Riyadh, 12354, Saudi Arabia
| | - Zhujun Huang
- Electrical and Computer Engineering, New York University, Brooklyn, NY, 11201, USA
| | - Ting Wu
- Center for Neural Science, New York University, New York, NY, 10003, USA
| | - Roozbeh Kiani
- Center for Neural Science, New York University, New York, NY, 10003, USA; Department of Psychology, New York University, New York, NY, 10003, USA
| | - Davood Shahrjerdi
- Electrical and Computer Engineering, New York University, Brooklyn, NY, 11201, USA; Center for Quantum Phenomena, Physics Department, New York University, New York, NY, 10003, USA.
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43
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Wang TP, Lee CL, Kuo CH, Kuo WC. Potential-induced sonoelectrochemical graphene nanosheets with vacancies as hydrogen peroxide reduction catalysts and sensors. ULTRASONICS SONOCHEMISTRY 2021; 72:105444. [PMID: 33387760 PMCID: PMC7803930 DOI: 10.1016/j.ultsonch.2020.105444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 12/11/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Defective graphene nanosheets (dGN4V) with 5-9, 5-8-5, and point defects were synthesised by a sonoelectrochemical method, where a potential of 4 V (vs. Ag/AgCl) was applied to drive the rapid intercalation of phosphate ions between the layers of the graphite foil as a working electrode. In addition to these vacancies, double vacancy defects were also created when the applied potential was increased to 8 V (dGN8V). The defect density of dGN8V (2406 μm-2) was higher than that of dGN4V (1786 μm-2). Additionally, dGN8V and dGN4V were applied as catalysts for the hydrogen peroxide reduction reaction (HPRR). The mass activity of dGN8V (1.31 × 10-2 mA·μg-1) was greater than that of dGN4V (1.17 × 10-2 mA·μg-1) because of its high electrochemical surface area (ECSA, 1250.89 m2·g-1) and defect density (ND, 2406 μm-2), leading to low charge transfer resistance on the electrocatalytic interface. The ECSA and ND of dGN4V were 502.7 m2·g-1 and 1786 μm-2, respectively. Apart from its remarkable HPRR activity, the cost-effective dGN8V catalyst also showed potential as an amperometric sensor for the determination of H2O2.
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Affiliation(s)
- Tzu-Pei Wang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan
| | - Chien-Liang Lee
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan.
| | - Chia-Hung Kuo
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
| | - Wen-Cheng Kuo
- Department of Mechatronics Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
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44
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Hassan A, Macedo LJ, Mattioli IA, Rubira RJ, Constantino CJ, Amorim RG, Lima FC, Crespilho FN. A three component-based van der Waals surface vertically designed for biomolecular recognition enhancement. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138025] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Wang J, Ma Q, Zhang Z, Diko CS, Qu Y. Biogenic fenton-like reaction involvement in aerobic degradation of C 60 by Labrys sp. WJW. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:115300. [PMID: 33279268 DOI: 10.1016/j.envpol.2020.115300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/16/2020] [Accepted: 07/25/2020] [Indexed: 06/12/2023]
Abstract
Buckminster fullerene (C60), the most representative type among fullerenes, has attracted widely attentions because of its many potential applications. The increasing application of fullerene and limited knowledge of its environmental fate are required concerns. Herein, the biotransformation of C60 by Labrys sp. WJW was investigated. Cell numbers reached 25.76 ± 1.85 folds within 8 days using 100 mg/L C60 as sole carbon source. The biotransformation of C60 by Labrys sp. WJW was analyzed by various characterization methods. Raman spectra indicated that strain WJW broke the soccer ball like structure of C60. After 12 days, over 60% of C60 was degraded evidenced by UV-vis spectrophotometry and liquid chromatography-mass spectrometry. The underlying biotransformation mechanism of C60 through an extracellular Fenton-like reaction was illustrated. In this reaction, the •OH production was mediated by reduction of H2O2 involving a continuous cycle of Fe(II)/Fe(III). Bacterial transformation of C60 will provide new insights into the understanding of C60 bioremediation process.
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Affiliation(s)
- Jingwei Wang
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
| | - Qiao Ma
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
| | - Zhaojing Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Catherine Sekyerebea Diko
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Yuanyuan Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
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46
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Weinhold M, Klar PJ. Patterning 2D materials for devices by mild lithography. RSC Adv 2021; 11:29887-29895. [PMID: 35480291 PMCID: PMC9041141 DOI: 10.1039/d1ra04982h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/27/2021] [Indexed: 11/21/2022] Open
Abstract
2D materials have been intensively studied for almost two decades and are now exhibiting exceptional properties. Thus, devices that integrate 2D materials offer many novel functionalities that will contribute significantly to the transition into an era beyond ‘Moore’. Lithographic methods are key technologies in the context of materials' integration into devices. However, to fully leverage the capabilities of these potential devices, it is vital to keep the integrity of the 2D materials intact and to minimize damage induced by device processing. This requirement is only partially met when employing conventional lithography methods, as they induce structural defects in the delicate materials. We demonstrate that exposing graphene to typical electron doses used in conventional electron beam lithography induces significant defect formation. The defect density is proportional to the electron dose and the structural integrity cannot be fully recovered by thermal annealing. We introduce a novel approach of mild lithography which combines traditional processing methods with a subsequent transfer step of the patterned mask onto the 2D material. We demonstrate that this separation of pattern definition and pattern application allows the lithographic process to be performed without exposing and potentially damaging the 2D material being processed. Finally, as an example relevant in terms of innovative device architectures, we present how the mild lithography approach can be used to achieve ordered arrangements of gold nanoparticles on 2D materials. Mild lithography allows patterning of 2D materials while minimizing processing-induced defects. Thus, their structural integrity and intrinsic properties are preserved.![]()
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Affiliation(s)
- Marcel Weinhold
- Institute of Experimental Physics I and Center for Materials Research (ZfM), Justus Liebig University Giessen, Heinrich-Buff-Ring 16, DE-35392 Giessen, Germany
| | - Peter J. Klar
- Institute of Experimental Physics I and Center for Materials Research (ZfM), Justus Liebig University Giessen, Heinrich-Buff-Ring 16, DE-35392 Giessen, Germany
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47
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Arif M, Zhang M, Mao Y, Bu Q, Ali A, Qin Z, Muhmood T, Shahnoor, Liu X, Zhou B, Chen SM. Oxygen vacancy mediated single unit cell Bi2WO6 by Ti doping for ameliorated photocatalytic performance. J Colloid Interface Sci 2021; 581:276-291. [DOI: 10.1016/j.jcis.2020.07.113] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 11/30/2022]
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48
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Wang J, Ma Q, Zhang Z, Li S, Diko CS, Dai C, Zhang H, Qu Y. Bacteria mediated Fenton-like reaction drives the biotransformation of carbon nanomaterials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141020. [PMID: 32750576 DOI: 10.1016/j.scitotenv.2020.141020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
Carbon nanomaterials (CNs), which gain heightened attention as novel materials, are increasingly incorporated into daily products and thus are released into the environment. Limited research on CNs environmental fates lags their industry growth, only few bacteria have been confirmed to biotransform CNs and the mechanism behind has not been revealed yet. In this study, four types of commercial CNs, i.e. graphene oxide (GO), reduced graphene oxide (RGO), single walled carbon nanotubes (SWCNTs), and oxidized (carboxylated) SWCNTs, were selected for investigation. The biotransformation of CNs by Labrys sp. WJW, which could grow with these CNs as the sole carbon source, was investigated. The bacterial transformation was proved by qPCR, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, liquid chromatography/time-of-flight/mass spectrometry, and gas chromatograph-mass spectrometry analyses. The biotransformation resulted in morphology change, defect increase and functional group change of these CNs. Furthermore, the underlying mechanism of CNs biodegradation mediated by extracellular Fenton-like reaction was demonstrated. In this reaction, the OH production was mediated by reduction of H2O2 involved a continuous cycle of Fe(II)/Fe(III). These findings reveal a novel degradation mechanism of microorganism towards high molecular weight substrate, which will provide a new insight into the environmental fate of CNs and the guidance for their safer use.
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Affiliation(s)
- Jingwei Wang
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Qiao Ma
- Institute of Environmental Systems Biology, College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Zhaojing Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Shuzhen Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Catherine Sekyerebea Diko
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Chunxiao Dai
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Henglin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yuanyuan Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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49
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Hoque MK, Behan JA, Creel J, Lunney JG, Perova TS, Colavita PE. Reactive Plasma N-Doping of Amorphous Carbon Electrodes: Decoupling Disorder and Chemical Effects on Capacitive and Electrocatalytic Performance. Front Chem 2020; 8:593932. [PMID: 33240854 PMCID: PMC7670066 DOI: 10.3389/fchem.2020.593932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/06/2020] [Indexed: 11/13/2022] Open
Abstract
Nitrogen-free amorphous carbon thin films prepared via sputtering followed by graphitization, were used as precursor materials for the creation of N-doped carbon electrodes with varying degrees of amorphization. Incorporation of N-sites was achieved via nitrogen plasma treatments which resulted in both surface functionalization and amorphization of the carbon electrode materials. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were used to monitor composition and carbon organization: results indicate incorporation of predominantly pyrrolic-N sites after relatively short treatment cycles (5 min or less), accompanied by an initial etching of amorphous regions followed by a slower process of amorphization of graphitized clusters. By leveraging the difference in the rate of these two processes it was possible to investigate the effects of chemical N-sites and C-defect sites on their electrochemical response. The materials were tested as metal-free electrocatalysts in the oxygen reduction reaction (ORR) in alkaline conditions. We find that the introduction of predominantly pyrrolic-N sites via plasma modification results in improvements in selectivity in the ORR, relative to the nitrogen-free precursor material. Introduction of defects through prolonged plasma exposure has a more pronounced and beneficial effect on ORR descriptors than introduction of N-sites alone, leading to both increased onset potentials, and reduced hydroperoxide yields relative to the nitrogen-free carbon material. Our results suggest that increased structural disorder/heterogeneity results in the introduction of carbon sites that might either serve as main activity sites, or that enhance the effects of N-functionalities in the ORR via synergistic effects.
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Affiliation(s)
- Md. Khairul Hoque
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and SFI Research Centre for Advanced Materials and BioEngineering Research (AMBER) Research Centres, School of Chemistry, Trinity College Dublin, Dublin, Ireland
| | - James A. Behan
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and SFI Research Centre for Advanced Materials and BioEngineering Research (AMBER) Research Centres, School of Chemistry, Trinity College Dublin, Dublin, Ireland
| | - James Creel
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and SFI Research Centre for Advanced Materials and BioEngineering Research (AMBER) Research Centres, School of Chemistry, Trinity College Dublin, Dublin, Ireland
| | | | - Tatiana S. Perova
- School of Engineering, Trinity College Dublin, College Green, Dublin, Ireland
| | - Paula E. Colavita
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and SFI Research Centre for Advanced Materials and BioEngineering Research (AMBER) Research Centres, School of Chemistry, Trinity College Dublin, Dublin, Ireland
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50
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Hu X, Zeng X, Liu Y, Lu J, Zhang X. Carbon-based materials for photo- and electrocatalytic synthesis of hydrogen peroxide. NANOSCALE 2020; 12:16008-16027. [PMID: 32720961 DOI: 10.1039/d0nr03178j] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The high demand for hydrogen peroxide (H2O2) has been dominantly supplied by the anthraquinone process for various applications globally, including chemical synthesis and wastewater treatment. However, the centralized manufacturing and intensive energy input and waste output are significant challenges associated with this process. Accordingly, the on-site production of H2O2via electro- and photocatalytic water oxidation and oxygen reduction partially is greener and easier to handle and has recently emerged with extensive research aiming to seek active, selective and stable catalysts. Herein, we review the current status and future perspectives in this field focused on carbon-based catalysts and their hybrids, since they are relatively inexpensive, bio-friendly and flexible for structural modulation. We present state-of-the-art progress, typical strategies for catalyst engineering towards selective and active H2O2 production, discussion on electro- and photochemical mechanisms and H2O2 formation through both reductive and oxidative reaction pathways, and conclude with the key challenges to be overcome. We expect promising developments would be inspired in the near future towards practical decentralized H2O2 production and its direct use.
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Affiliation(s)
- Xiaoyi Hu
- Department of Chemical Engineering, Monash University, Clayton, VIC 3168, Australia.
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