Enhanced singlet oxygen generation in PCN-224-Zn without the need of electron-hole separation for efficient photocatalytic water disinfection

被引：30

作者：

Jiang, Xin ^{[1
,2
]}

Liu, Sanmei ^{[1
]}

Wang, Wen ^{[1
]}

Shi, Shunli ^{[1
]}

Zeng, Zhenxing ^{[3
,4
]}

Chen, Chao ^{[1
]}

机构：

[1] Nanchang University, Coll Chem, Key Lab Jiangxi Prov Environm & Energy Catalysis, Nanchang 330031, Peoples R China

[2] Jiangxi Acad Emergency Management Sci, Nanchang 330030, Peoples R China

[3] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persistent Pollutants Contro, Nanchang 330063, Jiangxi, Peoples R China

[4] Nanchang Hangkong Univ, Natl Local Joint Engn Res Ctr Heavy Met Pollutant, Nanchang 330063, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2022年 / 575卷

基金：

中国国家自然科学基金;

关键词：

MOFs; Photocatalytic water disinfection; Oxygen activation; Singlet oxygen; Energy transfer process; Z-SCHEME; FABRICATION; HETEROJUNCTION; INACTIVATION; MOF;

D O I：

10.1016/j.apsusc.2021.151769

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photocatlytic water disinfection for pathengenic miroorgasnisms removal is of great importance to public health safety, however the photocataltyic performance is unsatisfactory due to the low reactive oxygen species (ROS) generation. In this work, an innovative energy-transfer-mediated oxygen activation system on PCN-224-Zn is proposed for selective singlet oxygen generation without the need of electron-hole separation. The as-prepared PCN-224-Zn exhibits remarkable singlet triggered photocatalytic E-coli inactivation and organic pollutant degradation performance. The enhanced photocatalytic activity is attributed to the introduction of Zn into the metal-organic frameworks (MOFs) that facilitates the transformation of electron-hole couple from singlet to triplet state for selective singlet oxygen generation with high efficiency. This work provides a new oxygen activation pathway for efficient and selective ROS generation without the need of electron-hole separation.

引用

页数：10

共 39 条

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