Journal
NANOPHOTONICS
Volume 9, Issue 7, Pages 2077-2088Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2020-0088
Keywords
Bi4NbO8Cl; heterostructures; MXene Ti3C2; photocatalysis
Categories
Funding
- Project of Shandong Province Higher Educational Science and Technology Program [J18KA011]
- Shandong Provincial Key Research and Development Program [2018GGX102036]
- Science Foundation for High-level Talents of Wuyi University [2018RC50, 2017RC23]
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The strategy to improve the photocatalytic removal efficiencies towards organic pollutants is still a challenge for the novel Sillen-Aurivillius perovskite type Bi4NbO8Cl. Herein, we report carbon-supported TiO2/Bi4NbO8Cl (C-TiO2/Bi4NbO8Cl) heterostructures with enhanced charge separation efficiency, which were fabricated via molten-salt flux process. The carbon-supported TiO2 particles were derived from MXene Ti3C2 precursors, and attached on plate-like Bi4NbO8Cl, acting as electrontraps to achieve supressed recombination of photo-induced charges. The improved charge separation confers C-TiO2/Bi4NbO8Cl heterostructures superior photocatalytic performance with 53% higher than pristine Bi4NbO8Cl, towards rhodamine B removal with the help of photo-induced holes. Moreover, the C-TiO2/Bi4NbO8Cl heterostructures can be expanded to deal with other water contaminants, such as methyl orange, ciprofloxacin and 2,4-dichlorophenol with 44, 25 and 13% promotion, respectively, and thus the study offers a series of efficient photocatalysts for water purification.
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