点击次数：
论文类型：期刊论文
发表时间：2019-05-21
发表刊物：CATALYSIS SCIENCE & TECHNOLOGY
收录刊物：SCIE、EI
卷号：9
期号：10
页面范围：2445-2455
ISSN号：2044-4753
摘要：Chemical warfare agents (CWAs) containing sulfur mustard and organophosphates are among the most toxic materials known to mankind and have caused lots of casualties during wars and terrorist attacks. Development of catalysts with selective oxidation and hydrolysis abilities for detoxification of these two types of CWAs is highly desired. Here, we report a series of carboxylic acid modified polyoxomolybdate derivatives with high catalytic performance in the degradation two typical chemical warfare agent simulants: 2-chloroethyl ethyl sulfide (CEES) and diethyl cyanophosphonate (DECP), at room temperature. Our results demonstrate that CEES can be highly-selectively degraded to the corresponding far less toxic 2-chloroethyl ethyl sulfoxide (CEESO) with the oxidant H2O2 within 12 minutes, and DECP is almost completely hydrolysed to nontoxic products within 10 minutes. The catalytic activities of these compounds were found to be influenced by the metal cations, carboxylic acid ligands and heteroatoms of polyoxoanions. The corresponding order is respectively Co2+ > Ni2+, Zn2+, Mn2+; PABA > Ala, Ac; AsMo > TeMo.