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

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Ultrafast Photocatalytic Detoxification of Mustard Gas Simulants by a Mesoporous Metal–Organic Framework with Dangling Porphyrin Molecules
Small ( IF 13.0 ) Pub Date : 2023-05-10 , DOI: 10.1002/smll.202301050
Ming-Min Wu ₁ , Juan Su ₁ , Dong Luo ₁ , Bing-Chen Cai ₁ , Ze-Lin Zheng ₁ , De-Shan Bin ₁ , Yan Yan Li ₂ , Xiao-Ping Zhou ₁

Affiliation

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 ¹O₂ and O₂^•− 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.

中文翻译：

具有悬挂卟啉分子的介孔金属有机框架对芥子气模拟物的超快光催化解毒

开发有效的催化剂来降解化学战剂具有重要意义。在此，报道了一种悬挂有卟啉分子的介孔MIL-101（Cr）复合材料（表示为TCPP@MIL-101（Cr），TCPP =四（4-羧基苯基）卟啉），该材料可用作非均相光催化剂将芥子气模拟物 2-氯乙基乙基硫醚 (CEES) 解毒为半衰期为 1 分钟的 2-氯乙基乙基亚砜 (CEESO)。TCPP@MIL-101(Cr)的催化性能与均相分子卟啉相当。机理研究表明，¹ O ₂和O ₂^•−均能有效生成，并在氧化反应中发挥重要作用。将金纳米颗粒（AuNPs）附着在TCPP@MIL-101（Cr）上，进一步增强催化活性，基准半衰期为45秒，这是迄今为止最快的记录。针对实际应用，制备了负载 TCPP@MIL-101(Cr) 的医用口罩，它可以在阳光和空气气氛下选择性地将 CEES 光氧化为 CEESO，在已报道的织物类复合材料中表现出最佳的降解性能。

更新日期：2023-05-10

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