Engineering of oxygen vacancy and bismuth cluster assisted ultrathin Bi12O17Cl2 nanosheets with efficient and selective photoreduction of CO2 to CO
Meili Guan,
Ni Lu,
Xuan Zhang,
Qiuwan Wang,
Jian Bao,
Guiye Chen,
Hao Yu,
Huaming Li,
Jiexiang Xia,
Xuezhong Gong
Affiliations
Meili Guan
College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao Shandong China
Ni Lu
College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao Shandong China
Xuan Zhang
Institute for Energy Research Jiangsu University Zhenjiang Jiangsu China
Qiuwan Wang
Institute for Energy Research Jiangsu University Zhenjiang Jiangsu China
Jian Bao
Institute for Energy Research Jiangsu University Zhenjiang Jiangsu China
Guiye Chen
College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao Shandong China
Hao Yu
College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao Shandong China
Huaming Li
Institute for Energy Research Jiangsu University Zhenjiang Jiangsu China
Jiexiang Xia
Institute for Energy Research Jiangsu University Zhenjiang Jiangsu China
Xuezhong Gong
National Center of International Joint Research for Hybrid Materials Technology, Institute of Hybrid Materials, College of Materials Science and Engineering, National Base of International Science and Technology Cooperation on Hybrid Materials Qingdao University Qingdao Shandong China
Abstract The photocatalytic conversion of CO2 into solar‐powered fuels is viewed as a forward‐looking strategy to address energy scarcity and global warming. This work demonstrated the selective photoreduction of CO2 to CO using ultrathin Bi12O17Cl2 nanosheets decorated with hydrothermally synthesized bismuth clusters and oxygen vacancies (OVs). The characterizations revealed that the coexistences of OVs and Bi clusters generated in situ contributed to the high efficiency of CO2–CO conversion (64.3 μmol g−1 h−1) and perfect selectivity. The OVs on the facet (001) of the ultrathin Bi12O17Cl2 nanosheets serve as sites for CO2 adsorption and activation sites, capturing photoexcited electrons and prolonging light absorption due to defect states. In addition, the Bi‐cluster generated in situ offers the ability to trap holes and the surface plasmonic resonance effect. This study offers great potential for the construction of semiconductor hybrids as multiphotocatalysts, capable of being used for the elimination and conversion of CO2 in terms of energy and environment.
