期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 610, 期 -, 页码 538-545出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2021.11.094
关键词
2D/2D Schottky Heterojunction; FAPbBr(3) nanoplates; FAPbBr(3)/Ti3C2 photocatalysis; CO2 Photoreduction
资金
- National Natural Science Foundation of China [62004155]
- Scientific Research Project of Shaanxi Provincial Department of Education [20JK0714]
- Natural Science Special Project of Xi'an University of Architecture and Technology [ZR19031]
- Independent Research and Development project of State Key Laboratory of Green Building in Western China [LSZZ202117]
Mimicking natural photosynthesis to convert carbon dioxide into valuable chemicals is crucial for addressing the global climate crisis and fossil fuel depletion. This study explores the synthesis of a 2D/2D FAPbBr(3)/Ti3C2 Schottky heterojunction, which significantly enhances the photocatalytic activity and stability.
Mimicking the natural photosynthesis process to convert carbon dioxide into value-added chemicals is vital to solving both the climate crisis worldwide and the depletion of fossil fuels. Herein, we explore the synthesis of 2D FAPbBr(3) nanoplate combined with 2D Ti3C2 nanosheet to form a 2D/2D FAPbBr(3)/Ti3C2 Schottky heterojunction using facile hot-injection and in-situ growth approaches. The Schottky heterojunction of FAPbBr(3)/Ti3C2 over large interfacial contact provides abundant channels for transferring photogenerated carriers from FAPbBr(3) nanoplate to Ti3C2 nanosheet. The experimental results showed a CO yield of 93.82 lmol.g(-1).h(-1) with ethyl acetate/deionization water as a sacrificial reagent for FAPbBr(3)/Ti3C2 composite, which was 1.25-fold enhancement that on pristine FAPbBr(3) nanoplates. The large 2D heterointerface can efficiently accelerate the spatial separation and transfer of photogenerated carriers and result in the superior photocatalytic activity and favorable stability of FAPbBr(3)/Ti3C2 photocatalysts, which are proved by in-situ X-ray photoelectron spectroscopy, photoluminescence, transient absorption spectra, and Mott-Schottky measurement. Thus, this work unveils that 2D/2D Schottky heterostructures would significantly improve the reaction activities of halide perovskite-based photocatalysts. (C) 2021 Elsevier Inc. All rights reserved.
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