Ultrafast Photocatalytic Detoxification of Mustard Gas Simulants by a Mesoporous Metal-Organic Framework with Dangling Porphyrin Molecules

Developing effective catalysts to degrade chemical warfare agents is of great significance. Herein, a mesoporous MIL-101(Cr) composite material dangled with porphyrin molecules (denote as TCPP@MIL-101(Cr), TCPP = tetra(4-carboxyphenyl)porphyrin) is reported, which can be used as a heterogeneous phot...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2023-09, Vol.19 (36), p.e2301050-e2301050
Main Authors: Wu, Ming-Min, Su, Juan, Luo, Dong, Cai, Bing-Chen, Zheng, Ze-Lin, Bin, De-Shan, Li, Yan Yan, Zhou, Xiao-Ping
Format: Article
Language:English
Subjects:
Catalytic activity
Chemical warfare
Composite materials
Gold
Metal-organic frameworks
Mustard gas
Nanoparticles
Nanotechnology
Oxidation
Performance degradation
Photocatalysis
Porphyrins
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Summary:Developing effective catalysts to degrade chemical warfare agents is of great significance. Herein, a mesoporous MIL-101(Cr) composite material dangled with porphyrin molecules (denote as TCPP@MIL-101(Cr), TCPP = tetra(4-carboxyphenyl)porphyrin) is reported, which can be used as a heterogeneous photocatalyst for detoxification of mustard gas simulants 2-chloroethyl ethyl sulfide (CEES) to 2-chloroethyl ethyl sulfoxide (CEESO) with a half-life of 1 min. The catalytic performance of TCPP@MIL-101(Cr) is comparable to that of homogeneous molecular porphyrin. Mechanistic studies reveal that both O and O are efficiently generated and play vital roles in the oxidation reaction. Gold nanoparticles (AuNPs) are attached to the TCPP@MIL-101(Cr) to further enhance the catalytic activity with a benchmark half-life of 45 s, which is the fastest record so far. A medical mask loaded TCPP@MIL-101(Cr) is fabricated for practical applications, which can selectively photoxidize CEES to CEESO under sunlight and air atmosphere, exhibiting the best degradation performance among the reported fabric-like composite materials.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202301050