Ultrafast Photocatalytic Detoxification of Mustard Gas Simulants by a Mesoporous Metal–Organic Framework with Dangling Porphyrin Molecules
Mingmin Wu, Juan Su, Dong Luo, Bing‐Chen Cai, Ze‐Lin Zheng, De‐Shan Bin, Yan Yan Li, Xiao‐Ping Zhou
Abstract
Abstract 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 1 O 2 and O 2 •− 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.