催化作用
吸附
氧气
可见光谱
载流子
光催化
光化学
分子
奥里维里斯
化学工程
材料科学
化学
纳米技术
吸收(声学)
光电子学
物理化学
有机化学
电介质
工程类
复合材料
铁电性
作者
Hao Yu,Jieyuan Li,Yihe Zhang,Songqiu Yang,Keli Han,Fan Dong,Tianyi Ma
标识
DOI:10.1002/anie.201813967
摘要
Abstract A facile and controllable in situ reduction strategy is used to create surface oxygen vacancies (OVs) on Aurivillius‐phase Sr 2 Bi 2 Nb 2 TiO 12 nanosheets, which were prepared by a mineralizer‐assisted soft‐chemical method. Introduction of OVs on the surface of Sr 2 Bi 2 Nb 2 TiO 12 extends photoresponse to cover the whole visible region and also tremendously promotes separation of photoinduced charge carriers. Adsorption and activation of CO 2 molecules on the surface of the catalyst are greatly enhanced. In the gas‐solid reaction system without co‐catalysts or sacrificial agents, OVs‐abundant Sr 2 Bi 2 Nb 2 TiO 12 nanosheets show outstanding CO 2 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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