期刊
NANO ENERGY
卷 36, 期 -, 页码 331-340出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.04.039
关键词
Photocatalysis; Hydrogen evolution; Water splitting; Sb doped SnO2; Eosin Y sensitization
类别
资金
- World Premier International Research Center Initiative (WPI Initiative) on Materials Nano-architectonics (MANA)
- MEXT (Japan)
- National Natural Science Foundation of China [21633004, 51472152]
- National Basic Research Program of China (973 Program) [2014CB239301]
- Natural Science Foundation of Shaanxi Province [2015JM5251]
- Scientific Research Project of Education Department of Shaanxi Province [15JK1072]
- Innovation Team Assistance Foundation of Shaanxi Province [2013KCT-06]
- State Scholarship Fund by China Scholarship Council (CSC) [201508610103]
- Graduate Innovation Foundation of Shaanxi University of Science and Technology
Developing new efficient visible-light-responsive and noble-metal-free photocatalysts to produce hydrogen, as a clean, abundant and renewable future energy source, independent of fossil reserves, is highly needed. For the first time, the efficient photocatalytic hydrogen production from an Eosin Y (EY)-sensitized Sb doped SnO2 system without any noble metal co-catalyst under visible light is reported here. It is worth noting that the doping amount of Sb in SnO2 has a great influence on the photocatalytic H-2 evolution activity in this EY-sensitized photocatalytic system. After sensitization by EY, the optimum photocatalytic H-2 evolution activity under visible light can be achieved by 0.39 at% Sb doped SnO2 and reaches 49.94 mu mol h(-1), which is 2.02 times higher than 24.71 mu mol h(-1) of non-doped SnO2 and also superior to most of the reported dye-sensitized noble-metal-free photocatalysts. Mechanism study indicates that doping Sb in SnO2 can induce bandgap narrowing, defects formation and conductivity enhancement, which play competitive roles in the photocatalytic H-2 evolution.
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