光催化
单线态氧
硫芥
选择性
共价键
化学
人体净化
催化作用
亚砜
光化学
降级(电信)
组合化学
纳米技术
材料科学
有机化学
氧气
废物管理
毒性
工程类
电信
计算机科学
作者
Li Zhang,Chao Sun,Sai-Jin Xiao,Quan-Gen Tan,Yang Gao,Jia-Qi Fan,Yuting Luo,Ru‐Ping Liang,Jian‐Ding Qiu
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2023-09-13
卷期号:6 (18): 17083-17091
被引量:3
标识
DOI:10.1021/acsanm.3c03262
摘要
Sulfur mustard (HD) poses a serious threat to society due to its dramatic toxicity, and thus, exploring efficient catalysts for the degradation of HD is of great significance from the perspective of national health and social security. Photocatalytic oxidation of HD is considered an effective detoxification method due to its mild reaction conditions and high selectivity. The emerging photocatalyst of covalent organic frameworks (COFs) with tunable structure and unique optical properties has attracted wide interest due to their great potential in HD decontamination. Herein, a photosensitive COF (TAPP–TFPT) was constructed by the Schiff base reaction, and then, a facile postmodification strategy was proposed to deposit silver nanoparticles on TAPP–TFPT (Ag@TAPP–TFPT) to enhance the photocatalytic degrading performance on HD simulants. Under the irradiation of visible light, both superoxide ion (O2•–) and singlet oxygen (1O2) were produced by Ag@TAPP–TFPT, and then, HD simulants can be selectively degraded into nontoxic bis(2-chloroethyl) sulfoxide with a half-life (t1/2) of 6.5 min and excellent reusability. This work demonstrates that postmodification of COFs offers a promising direction for the rational design of photocatalysts with good selectivity and high efficiency toward degradation of chemical warfare agents.
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