氧气
电荷(物理)
可见光谱
光化学
吸收光谱法
光谱(功能分析)
分离(统计)
分析化学(期刊)
材料科学
化学
吸收(声学)
物理
光电子学
光学
计算机科学
有机化学
环境化学
复合材料
机器学习
量子力学
作者
Hongjian Yu,Jieyuan Li,Yihe Zhang,Songqiu Yang,Keli Han,Fan Dong,Tianyi Ma,Hongwei Huang
标识
DOI:10.1002/anie.201813967
摘要
A facile and controllable in situ reduction strategy is used to create surface oxygen vacancies (OVs) on Aurivillius-phase Sr2 Bi2 Nb2 TiO12 nanosheets, which were prepared by a mineralizer-assisted soft-chemical method. Introduction of OVs on the surface of Sr2 Bi2 Nb2 TiO12 extends photoresponse to cover the whole visible region and also tremendously promotes separation of photoinduced charge carriers. Adsorption and activation of CO2 molecules on the surface of the catalyst are greatly enhanced. In the gas-solid reaction system without co-catalysts or sacrificial agents, OVs-abundant Sr2 Bi2 Nb2 TiO12 nanosheets show outstanding CO2 photoreduction activity, producing CO with a rate of 17.11 μmol g-1 h-1 , about 58 times higher than that of the bulk counterpart, surpassing most previously reported state-of-the-art photocatalysts. Our study provides a three-in-one integrated solution to advance the performance of photocatalysts for solar-energy conversion and generation of renewable energy.
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