Fabrication of wide-spectra-responsive NA/NH2-MIL-125(Ti) with boosted activity for Cr(VI) reduction and antibacterial effects

被引：124

作者：

Fu, Yangjie ^{[1
]}

Tan, Meng ^{[1
]}

Guo, Zhonglu ^{[2
]}

Hao, Derek ^{[3
]}

Xu, Youran ^{[1
]}

Du, Hao ^{[1
]}

Zhang, Chao ^{[1
]}

Guo, Jiayun ^{[1
]}

Li, Qiang ^{[1
]}

Wang, Qi ^{[1
]}

机构：

[1] Zhejiang Gongshang Univ, Sch Environm Sci & Engn, Hangzhou 310018, Peoples R China

[2] Hebei Univ Technol, Sch Mat Sci & Engn, Hebei Key Lab Boron Nitride Micro & Nano Mat, Tianjin 300130, Peoples R China

[3] Univ Technol Sydney UTS, Ctr Technol Water & Wastewater CTWW, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2023年 / 452卷

基金：

中国国家自然科学基金;

关键词：

NH2-MIL-125; MOFs; Homojunction; Photocatalysis; Cr(VI) reduction; Antibacterial activity; METAL-ORGANIC FRAMEWORKS; PHOTOCATALYTIC REDUCTION; FACILE SYNTHESIS; AQUEOUS CR(VI); OXIDATION; POTENTIALS; REMOVAL; CRYSTAL; DESIGN; HYBRID;

D O I：

10.1016/j.cej.2022.139417

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A NA/NH2-MIL-125(Ti) homojunction was prepared by grafting 1-naphthylamine (-NA, a chromophore group) on the -NH2 group in part of NH2-MIL-125(Ti). In-depth investigation of the optical and structural variations was carried out. The results indicated that the lattice structure of NH2-MIL-125(Ti) was well preserved after -NA modification. Whereas NA/NH2-MIL-125(Ti) with 10% -NA ratio exhibited optimal photocurrent response and the lowest charge separation efficiency. In photocatalytic activity experiments, NA/NH2-MIL-125(Ti) showed excellent activity with more than 99% Cr(VI) reduction and 99.999% bactericidal efficiency within 60-min irradiation. Furthermore, the photocatalysts showed good stability after 5 cyclic runs. Then, a mechanism about how the bacteria were killed was proposed, which was mainly contributed by the destruction of the cell membrane by photogenerated singlet oxygen (1O2). The results of this work will open a new route to the syn-thesis of MOFs for multiple photocatalytic applications.

引用

页数：11

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