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Microemulsion-Assisted Synthesis of Ag2CrO4@MIL-125(Ti)-NH2 Z-Scheme Heterojunction for Visible-Light Photocatalytic Inactivation of Bacteria

文献类型： 外文期刊

作者： Yuan, Haoyu 1 ; Zhang, Chao 1 ; Chen, Wenjing 2 ; Xia, Yuzhou 2 ; Chen, Lu 2 ; Huang, Renkun 2 ; Si, Ruiru 3 ; Liang, Ruowen 1 ;

作者机构： 1.Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

2.Ningde Normal Univ, Key Lab Green Energy & Environm Catalysis, Fujian Prov Univ, Ningde 352100, Peoples R China

3.Fujian Acad Agr Sci, Fujian Key Lab Agroprod Qual & Safety, Fuzhou 350003, Peoples R China

关键词： MIL-125(Ti)-NH2; Ag2CrO4; S. aureus; Z-scheme; microemulsion method

期刊名称：CATALYSTS （ 影响因子：3.9； 五年影响因子：4.2 ）

ISSN：

年卷期： 2023 年 13 卷 5 期

页码：

收录情况： SCI

摘要： Metal-organic frameworks (MOFs) are new porous materials composed of metal centers and organic ligand bridges, which received great attention in the field of photocatalysis. In this work, Ag2CrO4@MIL-125(Ti)-NH2 (denoted as AgCr@M125) Z-scheme heterojunctions were synthesized via a simple microemulsion method, by which highly dispersed nano-sized Ag2CrO4 can be anchored uniformly on the surfaces of porous MIL-125(Ti)-NH2 (denoted as M125). Compared with pure M125 and Ag2CrO4, the as-prepared AgCr@M125 hybrids show significant photocatalytic efficiency against inactivated Staphylococcus aureus (S. aureus), reaching over 97% inactivation of the bacteria after 15 min of visible light irradiation. Notably, the photocatalytic activity of the obtained 20%AgCr@M125 is about 1.75 times higher than that of AgCr-M125, which was prepared via a traditional precipitation method. The enhanced photocatalytic antibacterial activity of the AgCr@M125 photocatalytic system is strongly ascribed to a direct Z-scheme mechanism, which can be carefully discussed based on energy band positions and time-dependent electron spin response (ESR) experiments. Our work highlights a simple way to enhance the antibacterial effect by coupling with Ag2CrO4 and M125 via a microemulsion-assisted strategy and affords an ideal example for developing MOFs-based Z-scheme photocatalysts with excellent photoactivity.

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