Improvement of efficiency and selectivity of CO2 photoreduction over Bi2O2SO4 catalysts with Cu-Bi alloys

IF 5.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Surfaces and Interfaces Pub Date : 2025-03-08 DOI:10.1016/j.surfin.2025.106192
Pengcheng Xiang , Lili Wang , Qin Geng , Changyan Guo , Hongtao Xie , Yizhao Li , Yangyang Yu , Jide Wang
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Abstract

Structural design of semiconductor photocatalysts plays an important role in promoting light absorption, molecular activation, and charge separation in the CO2 reduction reaction, which is beneficial for improving photocatalytic activity. In this paper, a simple photodeposition strategy was employed to load Cu onto Bi2O2SO4 and form a Cu-Bi alloy. Under simulated sunlight conditions, the optimal catalyst demonstrates impressive photocatalytic activity and selectivity for CO2 reduction, with a corresponding yield of 18.8 μmol g-1 h-1, 15 times higher than that of pure Bi2O2SO4, and CO selectivity reaching 97.1%. The results indicate that metal deposition enhances light absorption utilization efficiency and promotes the separation and transfer of photogenerated carriers. Additionally, the combination of in-situ FT-IR spectra and theoretical calculations reveal the molecular mechanisms of photocatalytic CO2 reduction. This work discusses the synergistic effect of metal deposition and oxygen vacancies on photocatalytic reduction of CO2, providing a feasible method for constructing metal deposition structures with defects.

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利用铜铍合金提高 Bi2O2SO4 催化剂的二氧化碳光还原效率和选择性
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来源期刊
Surfaces and Interfaces
Surfaces and Interfaces Chemistry-General Chemistry
CiteScore
8.50
自引率
6.50%
发文量
753
审稿时长
35 days
期刊介绍: The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)
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