Journal
MATERIALS TODAY ENERGY
Volume 25, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2022.100956
Keywords
Bournonite; Photocatalysis; Butyldithiocarbamate acid; Hydrogen evolution; Catalytic sites
Funding
- Natural Science Foundation of Hainan Province [521RC495]
- Key Research and Development Project of Hainan Province [ZDYF2020037, ZDYF2020207]
- National Natural Science Foundation of China [62105083, 21805104]
- Innovative Research Projects for Graduate Students of Hainan Province [Hyb2020-05]
- Start-up Research Foundation of Hainan University [KYQD(ZR)-20008, KYQD(ZR)-20082, KYQD(ZR)-20083, KYQD(ZR)-20084, KYQD(ZR)-21065]
- High Level Talents project fund of Hainan basic and Applied Research Program (NATURAL SCIENCE) in 2019 [2019RC118]
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This study fabricated CuPbSbS3 nanoflakes with dominate (002) facet using a facile method, showing high photocatalytic hydrogen evolution performance. Density functional theory calculations revealed that CuPbSbS3 has abundant catalytic sites, leading to efficient hydrogen evolution reaction performance.
The photocatalyst is a key component of efficient photocatalytic hydrogen evolution (PHE) via water splitting. Bournonite CuPbSbS3 has a great application potential in solar-to-energy due to its tremendous semiconductor properties and earth-abundant components. Although CuPbSbS3 has achieved the highest power conversion efficiency (PCE) of 2.65% in thin-film photovoltaics, its application in PHE via water splitting has been rarely studied. In this work, CuPbSbS3 nanoflakes with dominate (002) facet is fabricated by a facile butyldithiocarbamate acid (BDCA) solution process, which exhibits a PHE rate of 250.8 mmol g(-1)/h without any co-catalyst under simulated solar irradiation. Density functional theory calculations show that plentiful catalytic sites with low DGH* are responsible for the high hydrogen evolution reaction performance of CuPbSbS3. This study represents an effective approach to realize photovoltaic-to-photocatalyst hydrogen evolution of Cu-based quaternary chalcogenides. (c) 2022 Elsevier Ltd. All rights reserved.
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