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Li Q, Zheng M, Zhong M, Ma L, Wang F, Ma L, Shen W. Engineering MoSx/Ti/InP Hybrid Photocathode for Improved Solar Hydrogen Production. Sci Rep 2016; 6:29738. [PMID: 27431993 PMCID: PMC4949461 DOI: 10.1038/srep29738] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 06/21/2016] [Indexed: 11/09/2022] Open
Abstract
Due to its direct band gap of ~1.35 eV, appropriate energy band-edge positions, and low surface-recombination velocity, p-type InP has attracted considerable attention as a promising photocathode material for solar hydrogen generation. However, challenges remain with p-type InP for achieving high and stable photoelectrochemical (PEC) performances. Here, we demonstrate that surface modifications of InP photocathodes with Ti thin layers and amorphous MoSx nanoparticles can remarkably improve their PEC performances. A high photocurrent density with an improved PEC onset potential is obtained. Electrochemical impedance analyses reveal that the largely improved PEC performance of MoSx/Ti/InP is attributed to the reduced charge-transfer resistance and the increased band bending at the MoSx/Ti/InP/electrolyte interface. In addition, the MoSx/Ti/InP photocathodes function stably for PEC water reduction under continuous light illumination over 2 h. Our study demonstrates an effective approach to develop high-PEC-performance InP photocathodes towards stable solar hydrogen production.
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Affiliation(s)
- Qiang Li
- Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Maojun Zheng
- Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, People's Republic of China
| | - Miao Zhong
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Liguo Ma
- Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Faze Wang
- Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Li Ma
- School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Wenzhong Shen
- Key Laboratory of Artificial Structure and Quantum Control, Ministry of Education, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
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Kang D, Kim TW, Kubota SR, Cardiel AC, Cha HG, Choi KS. Electrochemical Synthesis of Photoelectrodes and Catalysts for Use in Solar Water Splitting. Chem Rev 2015; 115:12839-87. [DOI: 10.1021/acs.chemrev.5b00498] [Citation(s) in RCA: 422] [Impact Index Per Article: 46.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Donghyeon Kang
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Tae Woo Kim
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Stephen R. Kubota
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Allison C. Cardiel
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Hyun Gil Cha
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Kyoung-Shin Choi
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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Hirota K, Tryk DA, Yamamoto T, Hashimoto K, Okawa M, Fujishima A. Photoelectrochemical Reduction of CO2 in a High-Pressure CO2 + Methanol Medium at p-Type Semiconductor Electrodes. J Phys Chem B 1998. [DOI: 10.1021/jp9822945] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kouske Hirota
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
| | - Donald A. Tryk
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
| | - Toshio Yamamoto
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
| | - Kazuhito Hashimoto
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
| | - Masafumi Okawa
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
| | - Akira Fujishima
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan, and Electric Power Development Company, Limited, 6-15-1, Ginza, Chuo-ku, Tokyo 104-8165, Japan
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