Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/118365
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Type: Journal article
Title: Three-in-one oxygen vacancies: whole visible-spectrum absorption, efficient charge separation, and surface site activation for robust CO₂ photoreduction
Other Titles: Three-in-one oxygen vacancies: whole visible-spectrum absorption, efficient charge separation, and surface site activation for robust CO(2) photoreduction
Author: Yu, H.
Li, J.
Zhang, Y.
Yang, S.
Han, K.
Dong, F.
Ma, T.
Huang, H.
Citation: Angewandte Chemie International Edition, 2019; 58(12):3880-3884
Publisher: Wiley
Issue Date: 2019
ISSN: 1433-7851
1521-3773
Statement of
Responsibility: 
Hongjian Yu, Jieyuan Li, Yihe Zhang, Songqiu Yang, Keli Han, Fan Dong, Tianyi Ma, Hongwei Huang
Abstract: 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.
Keywords: CO2 reduction; Sr2Bi2Nb2TiO12 nanosheets; charge separation; oxygen vacancies; photocatalysis
Rights: © 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
RMID: 0030109971
DOI: 10.1002/anie.201813967
Grant ID: http://purl.org/au-research/grants/arc/DE150101306
http://purl.org/au-research/grants/arc/LP160100927
Appears in Collections:Chemistry publications

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