Enhanced photocatalytic hydrogen evolution through MoS2 quantum dots modification of bismuth-based perovskites

Yunjian Fan; Jingmiao Hu; Tianyang Li; Shuang Xu; Shan Chen; Huajie Yin

doi:10.1039/d3cc05781j

Enhanced photocatalytic hydrogen evolution through MoS₂ quantum dots modification of bismuth-based perovskites

Chem Commun (Camb). 2024 Jan 23;60(8):1004-1007. doi: 10.1039/d3cc05781j.

Authors

Yunjian Fan¹, Jingmiao Hu^{2

3}, Tianyang Li⁴, Shuang Xu⁴, Shan Chen¹, Huajie Yin²

Affiliations

¹ Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230039, China. chenshan@ahu.edu.cn.
² Key Laboratory of Materials Physics, Centre for Environmental and Energy nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China, Hefei, 230031, China. yinhj@issp.ac.cn.
³ University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
⁴ School of Materials Science and Engineering, Anhui University, Hefei, 230039, China.

PMID: 38168790
DOI: 10.1039/d3cc05781j

Abstract

Efficient and cost-effective photocatalysts are pivotal for advancing large-scale solar hydrogen generation. Herein, we report a composite photocatalyst by incorporating MoS₂ quantum dots (MoS₂ QDs) as a cocatalyst into Cs₃Bi₂I₉, resulting in a high enhancement in photocatalytic performance. Remarkably, the optimum MoS₂ QDs/Cs₃Bi₂I₉ composite achieves an impressive hydrogen evolution rate (6.09 mmol h^-1 g^-1) in an ethanol and HI/H₃PO₂ mixed solution. This rate is 8.8 times higher than pristine Cs₃Bi₂I₉ (0.69 mmol h^-1 g^-1) and notably surpasses Pt/Cs₃Bi₂I₉ (2.47 mmol h^-1 g^-1). Moreover, the composite displays exceptional stability during an 18-hour reaction, showcasing its potential for sustainable photocatalytic hydrogen evolution.