H <sub>2</sub> O <sub>2</sub> Treatment Duration Regulated Sulfur Vacancies in CuIn <sub>5</sub> S <sub>8</sub> Nanosheets for Enhanced CH <sub>4</sub> Selectivity in PhotocatalyticCO <sub>2</sub> Reduction
Artificial photosynthesis represents a promising strategy to address climate change and energy sustainability. In this study, hydrothermal-synthesized CuIn5S8 nanosheets were subjected to H2O2-induced sulfur vacancy engineering, which enhanced visible-light absorption and suppressed carrier recombination without disrupting the bulk crystal structure. The optimized Vs-CuIn5S8-10 achieved a CH4 yield of 59.85 μmolg−1 (2.73-fold of pristine CuIn5S8) with 87.7% selectivity, validating vacancy regulation as an efficient strategy for high-performance solar fuel photocatalysts.
Authors
- Guobing Mao (ORCID: https://orcid.org/0000-0003-1472-3165)
- Qi Liu (ORCID: https://orcid.org/0000-0002-9614-6228)
- Longjie Lai (ORCID: https://orcid.org/0009-0003-4008-4771)
- Lipeng Wang
- Jinyong Fan
Institutions
- Jiangsu University of Science and Technology (CN)
- Anhui Polytechnic University (CN)
Publication Details
- Journal
- ACS Applied Energy Materials
- Published
- 2026-04-27
- DOI
- https://doi.org/10.1021/acsaem.6c00212
- Primary Topic
- Advanced Photocatalysis Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Anhui Provincial Department of Education