Selective detoxification of a sulfur mustard simulant in air by a methylene blue-functionalized metal–organic framework†

IF 3.5 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Jinfeng Zhou, Qing Zhou, Haoxuan Sun, Xiangqian Li, Ao Chen, Junyao Chen and Chunjie Chu
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引用次数: 0

Abstract

Efficient degradation of sulfur mustard is essential owing to its extreme toxicity and widespread use as a chemical warfare agent. However, current degradation methods often lack selectivity and generate highly toxic by-products. Herein, we demonstrate an approach for the selective photodegradation of a sulfur mustard simulant using singlet oxygen (1O2) produced by a methylene blue (MB)-modified UiO-66-(COOH)2 (UC, a classical metal–organic framework) composite, termed as MB@UC. The composite was prepared via adsorption of MB onto the surface of UC through strong electrostatic interactions. The MB@UC composite demonstrates high 1O2 generation, enabling selective detoxification of a sulfur mustard simulant (2-chloroethyl ethyl sulfide) into relatively non-toxic sulfoxide, with a half-life of 1.8 minutes under ambient conditions. Compared to traditional detoxifying agents, the MB@UC composite offers superior selectivity, rapid degradation, and excellent recyclability, maintaining its performance over multiple cycles. This work presents a promising strategy for the development of advanced heterogeneous photosensitizers for the detoxification of chemical warfare agents.

Abstract Image

亚甲基蓝功能化金属-有机框架对空气中芥菜模拟物的选择性解毒作用
硫芥具有极强的毒性,被广泛用作化学战剂,因此有效降解硫芥至关重要。然而,目前的降解方法往往缺乏选择性,产生剧毒的副产物。在此,我们展示了一种利用亚甲基蓝(MB)产生的单线态氧(1O2) -修饰经典金属-有机框架uuo -66-(COOH)2(简称UC),特别是MB@UC复合材料选择性光降解芥菜模拟物的方法。该复合材料是通过强静电作用将MB吸附在UC表面制备的。MB@UC复合材料显示出高的1O2生成,使硫芥模拟物(2-氯乙基乙基硫醚)在环境条件下选择性解毒为相对无毒的亚砜,半衰期为1.8分钟。与传统的解毒方法相比,MB@UC复合材料具有优越的选择性,快速降解和优异的可回收性,在多次循环中保持其性能。这项工作为开发先进的异相光敏剂解毒化学战剂提供了一个有前途的策略。
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来源期刊
Dalton Transactions
Dalton Transactions 化学-无机化学与核化学
CiteScore
6.60
自引率
7.50%
发文量
1832
审稿时长
1.5 months
期刊介绍: Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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