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Enhanced Photocatalytic Activity of Perovskite NaNbO3 by Oxygen Vacancies Engineering

Abstract

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 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 oxygen vacancies engineering is a feasible and general strategy to improve the photocatalytic performances of perovskite oxides, which will promote many related applications.

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Publication details

The article was received on 29 Mar 2019, accepted on 09 May 2019 and first published on 10 May 2019


Article type: Paper
DOI: 10.1039/C9CP01763A
Phys. Chem. Chem. Phys., 2019, Accepted Manuscript

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    Enhanced Photocatalytic Activity of Perovskite NaNbO3 by Oxygen Vacancies Engineering

    B. Yang, J. Bian, L. Wang, J. Wang, Y. Du, Z. Wang, C. wu and Y. Yang, Phys. Chem. Chem. Phys., 2019, Accepted Manuscript , DOI: 10.1039/C9CP01763A

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