LitaoMaa,JiaminXiea,XiaoshanYanb,ZhiweiFana,HeguoLib,LinLub,LikunChenb,YiXinb,PanchaoYina
a South China Advanced Institute for Soft Matter Science and Technology & State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510641, China
b State Key Laboratory of NBC Protection for Civilian, Research Institution of Chemical Defense, Beijing 100191, China
The urgent need for immediate personal protection against chemical warfare agents (CWAs) spurs the requirement on robust and highly efficient catalytic systems that can be conveniently integrated to wearable devices. Herein, as a new concept for CWA decontamination catalyst design, sub-nanoscale, catalytically active zirconium-oxo molecular clusters are covalently integrated in flexible polymer network as crosslinkers for the full exposure of catalytic sites as well as robust framework structures. The obtained membrane catalysts exhibit high swelling ratio with aqueous content as 84 wt% and therefore, demonstrate quasi-homogeneous catalytic activity toward the rapid hydrolysis of both CWA, soman (GD) (t1/2 = 5.0 min) and CWA simulant, methyl paraoxon (DMNP) (t1/2 = 8.9 min). Meanwhile, due to the covalent nature of cross-linkages and the high flexibility of polymer strands, the membranes possess promising mechanical strength and toughness that can stand the impact of high gas pressures and show high permeation for both CO2 and O2, enabling their extended applications in the field of collective/personal protective materials with body comfort.
近年来人类对抵御化学战剂（CWAs）的个人防护材料提出了更高的要求，它需要同时具备柔韧性和高催化降解活性并且易于制备可穿戴设备。本工作提出了一种新颖的降解CWAs的催化材料设计方法，将亚纳米级锆簇催化中心共价交联到聚合物网络中，形成具有优良的力学性能和可加工性能的基于锆簇的聚合物纳米复合材料，其韧性可达3.3 MJ/m3同时对CO2、O2具有高渗透性。得益于聚合物基体与极性溶剂的高相容性，该聚合纳米复合材料在水溶液中种表现出高溶胀比，溶剂含量可达84 wt%，并且可快速催化化学战剂soman（GD）及其模拟物甲基对氧磷（DMNP）水解，半衰期分别为5.0和8.9分钟。其优良的综合性能使其在具有身体舒适性的集体/个人防护材料领域得到广泛应用。
文章链接：https://www.sciencedirect.com/science/article/pii/S1001841721008998