期刊
NANO ENERGY
卷 59, 期 -, 页码 129-137出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2019.02.008
关键词
Strontium sulfate; TiO2, Hollow-box; Heterojunction; Photocatalyst
类别
资金
- NSFC [21703022]
- Chongqing University Postgraduates' Innovation Project [CYS17042]
- Science and Technology Research Project of Chongqing Municipal Education Commission of China [KJ1400607, KJ1401206]
- NSFCQ [cstc2015jcyjA20020, cstc2014jcyjA20020]
- Fundamental Research Funds for the Central Universities [2018CDJDWL0011, 2018CDQYWL0046, 2018CDPTCG0001/22]
Efficient solar light harvesting and photogenerated electron-hole separating are two key factors for high performance photocatalysts. Rational architecture design of photocatalysts could achieve superior photochemical reaction micro-cavities and suitable band structure of heterojunction could steer electron-hole separation and immigration. Herein, optical transparent SrSO4 nanoparticles are used to assemble SrSO4/TiO2/Pt hollow-boxes to form optical porous walls due to its large band gap, which can trap light in the hollow-box for efficient H-2 evolution both outside and inside the boxes. H-2 production in presence of methanol reaches to 10.5 mmol g(-1) h(-1), better than that of commercial P25/Pt. The novel structure has a synergistic effect for enhanced catalytic activity area, photoabsorption and vicinal charge separation among the semiconductor, metal and insulator through suitable band structures. This novel optical porous hollow-box structure and its specific material configuration brings in a new idea for developing highly efficient photocatalyst for H-2 evolution.
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