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Cao FH, Zhou Y, Wu J, Li W, Zhang CL, Ni G, Cui P, Song CJ. Electrospinning One-dimensional Surface-phosphorized CuCo/C nanofibers for Enzyme-free Glucose Sensing. NEW J CHEM 2022. [DOI: 10.1039/d2nj01485h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing novel electrocatalysts is of great importance for the practical application of non-enzymatic glucose sensors. One-dimensional (1D) carbon fiber-supported copper-cobalt bimetallic electrocatalysts (CuCo-P350) are successfully prepared via electrospinning technology and...
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2
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Yang Q, Hao J. Synthesis of metal sulfides via ionic liquid-mediated assembly strategy and their photocatalytic degradation of dyes in water. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127848] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Muthalif MPA, Choe Y. Surface modification of CuS counter electrodes by hydrohalic acid treatment for improving interfacial charge transfer in quantum-dot-sensitized solar cells. J Colloid Interface Sci 2021; 595:15-24. [PMID: 33813220 DOI: 10.1016/j.jcis.2021.03.113] [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: 12/27/2020] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 11/25/2022]
Abstract
High charge transfer resistance and low electrocatalytic activity of counter electrodes (CEs) are mainly responsible for the poor photovoltaic performance of quantum-dot-sensitized solar cells (QDSSCs). Herein, a novel strategy has been successfully introduced for the first time to improve the electrocatalytic activity and charge transfer properties of a copper sulfide (CuS) CE by modifying it with the addition of hydrohalic acids (HHA). Through the suitable surface modification of HHA-incorporated CuS CE, the charge transfer from the external circuit to the CE surface was effectively facilitated. The electrochemical analyses suggest that charge transfer resistance is sufficiently reduced at the CE/electrolyte interface by using the HHA-treated CuS CEs. This improvement is mainly attributed to the high electrocatalytic activity of the modified CEs for the reduction of the polysulfide redox couple electrolyte in QDSSCs. The device constructed with TiO2/CdS/CdSe/ZnS photoanodes and the hydrogen-fluoride-treated CuS (HFCuS) CE exhibits a power conversion efficiency of 4.25%, which is considerably higher than that of the device with the bare CuS CE (3.11%). These findings can facilitate the fabrication of highly efficient CEs for next-generation solar cells.
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Affiliation(s)
- Mohammed Panthakkal Abdul Muthalif
- Department of Polymer Science and Chemical Engineering, Pusan National University, Geumjeong-gu, Jangjeong-Dong, Busan 46241, South Korea
| | - Youngson Choe
- Department of Polymer Science and Chemical Engineering, Pusan National University, Geumjeong-gu, Jangjeong-Dong, Busan 46241, South Korea.
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4
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Liu L, Yang X, Zhao Y, Yao B, Hou Y, Fu W. The rational design of Cu 2-xSe@(Co,Cu)Se 2 core-shell structures as bifunctional electrocatalysts for neutral-pH overall water splitting. NANOSCALE 2021; 13:1134-1143. [PMID: 33399603 DOI: 10.1039/d0nr07897b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Highly active and stable bifunctional electrocatalysts for H2 generation from neutral-pH water are desired, but difficult to achieve. The modification of the electronic and crystal structure of a material by element doping, morphology design and constructing a complex is a valid strategy for obtaining high-performance catalysts toward overall water splitting. In this study, a novel Cu2-xSe@(Co,Cu)Se2 core-shell structure with ultrathin (Co,Cu)Se2 nanosheets anchored as a shell on an internal Cu2-xSe core was fabricated, for the first time, by integrating the three above-mentioned modification methods. Benefiting from the synergistic effect between components and the unique structure, the Cu2-xSe@(Co,Cu)Se2 core-shell structure can serve as an efficient bifunctional electrocatalyst for both HERs and OERs in neutral-pH electrolytes with a current density of 10 mA cm-2 at the overpotentials of 106 mV and 396 mV, respectively. Additionally, the material just requires a cell voltage of 1.73 V to afford a current density of 10 mA cm-2 in a neutral two-electrode electrolyzer. Such performances significantly outperform control catalysts and analogues. Even more importantly, the original concept of coordinated regulation presented in this work can broaden our horizons in the design of new and highly efficient catalysts for neutral water splitting.
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Affiliation(s)
- Li Liu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
| | - Xiao Yang
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
| | - Yuanqing Zhao
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
| | - Bingbing Yao
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
| | - Yanhua Hou
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China.
| | - Wensheng Fu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
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5
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Bhavani P, Praveen Kumar D, Putta Rangappa A, Hong Y, Gopannagari M, Amaranatha Reddy D, Kyu Kim T. Skeletal Cu
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S
4
Nanocages Wrapped by Few‐Layered Black Phosphorus Nanosheets as an Efficient H
2
Production Photocatalyst. ChemCatChem 2020. [DOI: 10.1002/cctc.202001111] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Bhavani
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
| | - D. Praveen Kumar
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
| | - A. Putta Rangappa
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
| | - Yul Hong
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
| | | | - D. Amaranatha Reddy
- Department of Sciences Indian Institute of Information Technology Design and Manufacturing Kurnool Andhra Pradesh 581007 India
| | - Tae Kyu Kim
- Department of Chemistry Yonsei University Seoul 03722 Republic of Korea
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6
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Bhavani P, Kumar DP, Shim HS, Rangappa P, Gopannagari M, Reddy DA, Song JK, Kim TK. In situ addition of Ni salt onto a skeletal Cu7S4 integrated CdS nanorod photocatalyst for efficient production of H2 under solar light irradiation. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02612f] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Development of earth-abundant, low cost, skeletal-type copper sulfide superstructures and in situ addition of Ni salts plays a prominent role to enhance the activity of CdS semiconductor nanostructures for photocatalytic H2 production.
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Affiliation(s)
- P. Bhavani
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Republic of Korea
| | - D. Praveen Kumar
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Republic of Korea
| | - Hyung Seop Shim
- Department of Chemistry
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Putta Rangappa
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Republic of Korea
| | | | | | - Jae Kyu Song
- Department of Chemistry
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Tae Kyu Kim
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Republic of Korea
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7
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Wan M, Cui S, Wei W, Cui S, Chen K, Chen W, Mi L. Bi-component synergic effect in lily-like CdS/Cu7S4 QDs for dye degradation. RSC Adv 2019; 9:2441-2450. [PMID: 35520484 PMCID: PMC9059895 DOI: 10.1039/c8ra09331h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 12/21/2018] [Indexed: 12/31/2022] Open
Abstract
CdS has attracted extensive attention in the photocatalytic degradation of wastewater due to its relatively narrow bandgap and various microstructures. Previous reports have focused on CdS coupled with other semiconductors to reduce the photocorrosion and improve the photocatalytic performance. Herein, a 3D hierarchical CdS/Cu7S4 nanostructure was synthesized by cation exchange using lily-like CdS as template. The heterojunction material completely inherits the special skeleton of the template material and optimizes the nano-scale morphology, and achieves the transformation from nanometer structure to quantum dots (QDs). The introduction of Cu ions not only tuned the band gap of the composites to promote the utilization of solar photons, more importantly, Fenton-like catalysis was combined into the degradation process. Compared with the experiments of organic dye degradation under different illumination conditions, the degradability of the CdS/Cu7S4 QDs is greatly superior to pure CdS. Therefore, the constructed CdS/Cu7S4 QDs further realized the optimization of degradation performance by the synergic effect of photo-catalysis and Fenton-like catalysis. CdS has attracted extensive attention in the photocatalytic degradation of wastewater due to its relatively narrow bandgap and various microstructures.![]()
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Affiliation(s)
- Mengli Wan
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
- College of Chemistry and Molecular Engineering
| | - Shizhong Cui
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
| | - Wutao Wei
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
| | - Siwen Cui
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
| | - Kongyao Chen
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
| | - Weihua Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Liwei Mi
- Center for Advanced Materials Research
- Zhongyuan University of Technology
- Zhengzhou 450007
- China
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8
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Zhong W, Shen S, Feng S, Lin Z, Wang Z, Fang B. Facile fabrication of alveolate Cu2−xSe microsheets as a new visible-light photocatalyst for discoloration of Rhodamine B. CrystEngComm 2018. [DOI: 10.1039/c8ce01534a] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new photocatalyst, alveolate Cu2−xSe microsheets, is developed, which reveals superior photocatalytic discoloration of Rhodamine B.
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Affiliation(s)
- Wenwu Zhong
- Department of Materials
- Taizhou University
- Taizhou 318000
- China
| | - Shijie Shen
- Department of Materials
- Taizhou University
- Taizhou 318000
- China
| | - Shangshen Feng
- Department of Materials
- Taizhou University
- Taizhou 318000
- China
| | - Zhiping Lin
- Department of Materials
- Taizhou University
- Taizhou 318000
- China
| | - Zongpeng Wang
- Department of Materials
- Taizhou University
- Taizhou 318000
- China
| | - Baizeng Fang
- Department of Chemical & Biological Engineering
- University of British Columbia
- Vancouver
- Canada
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9
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Gupta S, Chandna N, Dubey P, Singh AK, Jain N. GO–Cu7S4 catalyzed ortho-aminomethylation of phenol derivatives with N,N-dimethylbenzylamines: site-selective oxidative CDC. Chem Commun (Camb) 2018; 54:7511-7514. [DOI: 10.1039/c8cc03396j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient ortho-selective C–H aminomethylation of phenols and naphthols with N,N-dimethylbenzylamines using a GO–Cu7S4 nanocatalyst is reported.
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Affiliation(s)
- Sonu Gupta
- Department of Chemistry, Indian Institute of Technology
- New Delhi-110016
- India
| | - Nisha Chandna
- Department of Chemistry, Indian Institute of Technology
- New Delhi-110016
- India
| | - Pooja Dubey
- Department of Chemistry, Indian Institute of Technology
- New Delhi-110016
- India
| | - Ajai K. Singh
- Department of Chemistry, Indian Institute of Technology
- New Delhi-110016
- India
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology
- New Delhi-110016
- India
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Wang X, Xie Y, Bateer B, Pan K, Jiao Y, Xiong N, Wang S, Fu H. Selenization of Cu 2ZnSnS 4 Enhanced the Performance of Dye-Sensitized Solar Cells: Improved Zinc-Site Catalytic Activity for I 3. ACS APPLIED MATERIALS & INTERFACES 2017; 9:37662-37670. [PMID: 29019395 DOI: 10.1021/acsami.7b09642] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Cu2ZnSnS4 (CZTS) and Cu2ZnSn(S,Se)4 (CZTSSe) as promising photovoltaic materials have drawn much attention because they are environmentally benign and earth-abundant elements. In this work, the monodispersed, low-cost Cu2ZnSnS4 nanocrystals with small size have been controllably synthesized via a wet chemical routine. And CZTSSe could be easily prepared after selenization of CZTS. When they are employed as counter electrodes (CEs) for dye-sensitized solar cells (DSSCs), the power conversion efficiency (PCE) has been improved from 3.54% to 7.13% as CZTS is converted to CZTSSe, which is also compared to that of Pt (7.62%). The exact reason for the enhanced catalytic activity of I3- is discussed with the work function and density functional theory (DFT) when CZTSSe converted from CZTS. The results of a Kelvin probe suggest that the work function of CZTSSe (5.61 eV) is closer to that of Pt (5.65 eV) and higher than that of CZTS, which matched the redox shuttle potential better. According to the theory calculation, all the atomic and bond populations changed significantly when Se replaced partly the S on the CZTS system, especially in the Zn site. During the catalytic process as CEs, the adsorption energy obviously increased compared to those at other sites when I3- adsorbed on the Zn site in CZTSSe. So, Zn plays an important role for the reduction of I3- after CZTS is converted to CZTSSe. Based on above analysis, the reason for enhanced performance of DSSCs when CZTS converted to CZTSSe is mainly due to the enhancement of Zn-site activity. This work is beneficial for understanding the catalytic reaction mechanism of CZTS(Se) as CEs of DSSCs.
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Affiliation(s)
- Xiuwen Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Ying Xie
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Buhe Bateer
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Kai Pan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Yanqing Jiao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Ni Xiong
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Song Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
| | - Honggang Fu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University , Harbin 150080, People's Republic of China
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