Bi/BiOI/carbon quantum dots nano-sheets with superior photocatalysis

Chenhui Zhao; Zhijie Zhao; Ying Liang; Jiangfeng Fu

doi:10.1039/d3ra05145e

Bi/BiOI/carbon quantum dots nano-sheets with superior photocatalysis

RSC Adv. 2023 Oct 17;13(43):30520-30527. doi: 10.1039/d3ra05145e. eCollection 2023 Oct 11.

Authors

Chenhui Zhao¹, Zhijie Zhao¹, Ying Liang², Jiangfeng Fu¹

Affiliations

¹ School of Power and Energy, Northwestern Polytechnical University Xi'an 710072 China fjf@nwpu.edu.cn.
² School of Chemistry and Chemical Engineering, Northwestern Polytechnical University Xi'an 710072 China.

Abstract

A new photocatalyst of Bi/BiOI/Carbon quantum dots (CQDs) was synthesized via a simple method. Photocatalytic performance of Bi/BiOI/CQDs was evaluated by photodegradation of RhB. Experiment indicated that the introduction of CQDs could improve the photocatalysis activity of BiOI obviously. Moreover, there is a optimum percentage of CQDs. In this photocatalytic system, the enhanced photoactivity was mainly attributed to the heterojunction interface between CQDs and BiOI, as well as the enhanced light harvesting for the appropriate CQDs introduction. The radicals trapping experiments revealed that O₂˙^-, ˙OH and h⁺ were the main active species during the photocatalysis process.