Citation: Yingchun Miao, Zichao Lian, Yuning Huo, Hexing Li. Microwave-assisted ionothermal synthesis of hierarchical microcube-like BiOBr with enhanced photocatalytic activity[J]. Chinese Journal of Catalysis, ;2018, 39(8): 1411-1417. doi: 10.1016/S1872-2067(18)63080-3 shu

Microwave-assisted ionothermal synthesis of hierarchical microcube-like BiOBr with enhanced photocatalytic activity

a Faculty of Chemical and Environmental Science, Key Laboratory of Environment Chemistry, Qujing Normal University, Qujing 655000, Yunnan, China;
b The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China

Received Date: 3 March 2018
Revised Date: 25 April 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (20937003, 21261140333, 21237003, 21207091, 21577092, 2171101231), Shanghai Government (12230706000, 11JC1409000, 12YZ091, 15520711300), Yunnan Applied Basic Research Project of Province (2013FZ109, 2016FB016), and Key Projects of Yunnan Provincial Department of Education (2015Z183, 2016ZZX207).

Bismuth oxybromide (BiOBr) with a hierarchical microcube morphology was successfully synthesized via microwave-assisted ionothermal self-assembly method. The as-obtained BiOBr was composed of regular multi-layered nanosheets, which were formed by selective adsorption of ionic liquids on the Br-terminated surface, followed by the formation of hydrogen bond-co-π-π stacking. The synthesized BiOBr exhibited high activity, excellent stability, and superior mineralization ability in the photocatalytic degradation of organic dyes under visible light owing to its enhanced light absorbance and narrow bandgap. Furthermore, photo-generated electrons were determined to be the main active species by comparison with different trapping agents used in the photocatalytic reactions.
- Microwave,
- BiOBr microcubes,
- Self-assembly,
- Photocatalytic degradation,
- Mineralization ability
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