Recent advancement in Bi5O7I-based nanocomposites for high performance photocatalysts

Qadeer Ul Hassan; Ali Imran Channa; Quan-Guo Zhai; Gangqiang Zhu; Yongxiang Gao; Nisar Ali; Muhammad Bilal

doi:10.1016/j.chemosphere.2021.132668

Recent advancement in Bi₅O₇I-based nanocomposites for high performance photocatalysts

Chemosphere. 2022 Feb;288(Pt 3):132668. doi: 10.1016/j.chemosphere.2021.132668. Epub 2021 Oct 28.

Authors

Qadeer Ul Hassan¹, Ali Imran Channa², Quan-Guo Zhai³, Gangqiang Zhu⁴, Yongxiang Gao⁵, Nisar Ali⁶, Muhammad Bilal⁷

Affiliations

¹ School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China; Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China.
² Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, PR China.
³ School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China. Electronic address: zhaiqg@snnu.edu.cn.
⁴ School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China. Electronic address: zgq2006@snnu.edu.cn.
⁵ Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China.
⁶ Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research, Center for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China.
⁷ School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.

PMID: 34718019
DOI: 10.1016/j.chemosphere.2021.132668

Abstract

Bi₅O₇I belongs to the family of bismuth oxyhalides (BiOX, X = Cl, Br, I), having a unique layered structure with an internal electrostatic field that promotes the separation and transfer of photo-generated charge carriers. Interestingly, Bi₅O₇I exhibits higher thermal stability compared to its other BiOX member compounds and absorption spectrum extended to the visible region. Bi₅O₇I has demonstrated applications in diverse fields such as photocatalytic degradation of various organic pollutants, marine antifouling, etc. Unfortunately, owing to its wide band gap of ∼2.9 eV, its absorption lies mainly in the ultraviolet region, and a tiny portion of absorption lies in the visible region. Due to limited absorption, the photocatalytic performance of pure Bi₅O₇I is still facing challenges. In order to reduce the band gap and increase the light absorption capability of Bi₅O₇I, doping and formation of heterostructure strategies have been employed, which showed promising results in the photocatalytic performance. In addition, the plasmonic heterostructures of Bi₅O₇I were also developed to further boost the efficiency of Bi₅O₇I as a photocatalyst. Here, in this review article, we present such recent efforts made for the advanced development of Bi₅O₇I regarding its synthesis, properties and applications. The strategies for photocatalytic performance enhancement have been discussed in detail. Moreover, in the conclusion section, we have presented the current challenges and discussed possible prospective developments in this field.

Keywords: Bi(5)O(7)I; Bismuth oxyhalide; Marine antifouling; Organic pollutants; Photocatalyst; Photodegradation; Plasmonic heterostructures of Bi(5)O(7)I.

Publication types

Review

MeSH terms

Bismuth
Catalysis
Light*
Nanocomposites*
Prospective Studies

Substances

Bismuth