Bi3.64Mo0.36O6.55 nanoparticles anchored in BiOI: A p-n heterojunction photocatalyst to enhance water purification

Jiawei Liu; Liying Huang; Yeping Li; Jun Shi; Huiping Deng

doi:10.1016/j.envpol.2023.121645

Bi_3.64Mo_0.36O_6.55 nanoparticles anchored in BiOI: A p-n heterojunction photocatalyst to enhance water purification

Environ Pollut. 2023 Jul 15:329:121645. doi: 10.1016/j.envpol.2023.121645. Epub 2023 Apr 21.

Authors

Jiawei Liu¹, Liying Huang², Yeping Li³, Jun Shi¹, Huiping Deng⁴

Affiliations

¹ Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
² School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
³ School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China.
⁴ Shanghai Institute of Pollution Control and Ecological Security, Key Laboratory of Yangtze River Water Environment Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China. Electronic address: denghuiping@tongji.edu.cn.

PMID: 37088256
DOI: 10.1016/j.envpol.2023.121645

Abstract

Selective constructing of heterojunctions enables directional electron-hole migration and favorable charge separation. In this study, a novel p-n junction Bi_3.64Mo_0.36O_6.55 (BMO) nanoparticles anchored in BiOI construct by hydrothermal and subsequent in-situ synthesis. The construction of tight heterojunctions that enhance the characteristic absorption of visible light by Bi_3.64Mo_0.36O_6.55/BiOI (BIMO) and expose more reactive sites can be used to facilitate the rapid degradation of antibiotics (Tetracycline, TC), endocrine disruptors (Bisphenol A, BPA) and dyes in water. In addition, the BIMO catalyst maintained the rapid degradation rate of TC despite the interference of inorganic anions and aqueous substrates. The charge transfer pathways and radical species between the heterojunction components were investigated. In addition, the intermediates and toxicological analysis showed that TC was further mineralized and the small molecule products were generated significantly less toxic and less contaminated. In conclusion, this study synthesized photocatalysts based on p-n heterojunctions, which have potential applications for the degradation of TC.

Keywords: Bi(3.64)Mo(0.36)O(6.55)/BiOI; Degradation pathway; Pollution; p-n heterojunction photocatalyst.

MeSH terms

Anti-Bacterial Agents
Coloring Agents
Electrons
Nanoparticles*
Water
Water Purification*

Substances

Anti-Bacterial Agents
Coloring Agents
Water