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.
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.