Preparation of Bi/WO<sub>3</sub> composite photocatalytic materials with antibacterial properties

XIAO Wei; ZHANG Kejie; FU Yangjie; GUO Jiayun; ZHANG Yi; WANG Qi

doi:10.13801/j.cnki.fhclxb.20210312.002

Volume 38 Issue 12

Dec. 2021

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XIAO Wei, ZHANG Kejie, FU Yangjie, et al. Preparation of Bi/WO3 composite photocatalytic materials with antibacterial properties[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4198-4204. doi: 10.13801/j.cnki.fhclxb.20210312.002

Citation:

XIAO Wei, ZHANG Kejie, FU Yangjie, et al. Preparation of Bi/WO₃ composite photocatalytic materials with antibacterial properties[J]. Acta Materiae Compositae Sinica, 2021, 38(12): 4198-4204. doi: 10.13801/j.cnki.fhclxb.20210312.002

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Preparation of Bi/WO₃ composite photocatalytic materials with antibacterial properties

doi: 10.13801/j.cnki.fhclxb.20210312.002

School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China

Received Date: 2020-12-30
Accepted Date: 2021-02-23

Available Online: 2021-03-12

Publish Date: 2021-12-01

Abstract

Abstract

Bi/WO₃ composite materials with visible-light-response were prepared. Semi-metal Bi⁰ with SPR effect was deposited on WO₃ surface via UV reduction method using bismuth pentahydrate Bi(NO₃)₃·5H₂O as bismuth source. Using E. coli and S. aureus as experimental objects, the photocatalytic antibacterial properties of the prepared composite materials were investigated, and the Bi loading amount was optimized via considering both the structure and photoelectrochemical properties. It is found that 0.6 mmol Bi/WO₃ can kill more than 99% of bacteria within 120 min. The antibacterial mechanism was further investigated. By adding different kinds of capture agents and combining with electron spin resonance (ESR) technology, it is found that hydroxyl radical (·OH) and superoxide radical (·O₂⁻) are the main active species causing E. coli deactivation.
- WO₃,
- photocatalysis,
- E. coli,
- S. aureus,
- antibacterial property,
- SPR effect
Long Abstrsct
Innovation Points

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References(17)

References

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