Oxygen vacancy-rich BiO2-x ultra-thin nanosheet for efficient full-spectrum responsive photocatalytic oxygen evolution from water splitting 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion
年/卷/期
2019 / 195 /
页码
309-317
ISSN号
0927-0248
作者单位
Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Shandong, Peoples R China;
作者
Guo, Yichen;Xue, Yanjun;Tian, Jian;Cui, Hongzhi;Sun, Benteng;Qian, Yeye;Liang, Zhangqian;
摘要
Photocatalytic water splitting is an environmentally friendly technique for oxygen evolution. Vacancy-rich layered materials with good electromigration properties are of great interests. Herein, we synthesized fullspectrum responsive vacancy-rich BiO2-x ultra-thin nanosheets (UTNSs). The band gap is narrowed and the edge of valence band is increased in the BiO(2-x )UTNSs, which are responsible for the enhanced light response and are confirmed by UV-Vis-NIR diffuse reflectance spectra (DRS), electronic spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and valence measurement. Compared to BiO2-x nanosheets (NSs), BiO2-x UTNSs exhibits enhanced photocatalytic performance for oxygen evolution under full-spectrum irradiation, which can be attributed to the oxygen vacancies. The presence of oxygen vacancies in BiO2-x UTNSs promote the oxidation ability. This finding provides defect level understanding for developing highly efficient full-spectrum light responsive photocatalysts.
机翻摘要
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关键词/主题词
Oxygen vacancy;Ultra-thin nanosheets;Photocatalytic;Oxygen evolution;Full spectrum;
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