Preparation of Bi/WO3 composite photocatalytic materials with antibacterial properties

被引：0
|
作者：
Xiao W. [1 ]
Zhang K. [1 ]
Fu Y. [1 ]
Guo J. [1 ]
Zhang Y. [1 ]
Wang Q. [1 ]
机构：
[1] School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2021年 / 38卷 / 12期
关键词：
Antibacterial property; E; coli; Photocatalysis; S.aureus; SPR effect; WO[!sub]3[!/sub;
D O I：
10.13801/j.cnki.fhclxb.20210312.002
中图分类号：
学科分类号：
摘要：
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. coliand 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. © 2021, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：4198 / 4204
页数：6
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