Enhanced photocatalytic activity of perovskite NaNbO3 by oxygen vacancy engineering

文献情報

出版日 2019-05-10

DOI 10.1039/C9CP01763A

インパクトファクター 3.676

著者

Bian Yang, Jihong Bian, Lei Wang, Jianwei Wang, Yaping Du, Zhiguang Wang, Chao Wu, Yaodong Yang

原文を見る

要旨

NaNbO3 with oxygen vacancies has been successfully synthesized through a well controllable solid-state reaction, whose photocatalytic performances have been prominently enhanced by almost 2.4 times compared with just annealed NaNbO3 (the control sample). When oxygen vacancies were introduced into the perovskite, the color of NaNbO3 turned black and the band gap was decreased, resulting in its remarkable absorption under visible light, and its higher symmetry also favors the electron transfer. More importantly, oxygen vacancies lead to larger specific surface area and higher charge density, which play non-negligible roles in improving the visible-light-activities. These encouraging findings prove that oxygen vacancy engineering is a feasible and general strategy to improve the photocatalytic performances of perovskite oxides, which will promote many related applications.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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