Department of Physical Chemistry and ‡Department of Organic Chemistry, Israel Institute for Biological Research , P. O. Box 19, Ness Ziona 74100, Israel.
Environ Sci Technol. 2014 Sep 16;48(18):10912-8. doi: 10.1021/es502981y. Epub 2014 Aug 27.
Mild treatment with hydrogen peroxide solutions (3-30%) efficiently decomposes adsorbed chemical warfare agents (CWAs) on microporous activated carbons used in protective garments and air filters. Better than 95% decomposition of adsorbed sulfur mustard (HD), sarin, and VX was achieved at ambient temperatures within 1-24 h, depending on the H2O2 concentration. HD was oxidized to the nontoxic HD-sulfoxide. The nerve agents were perhydrolyzed to the respective nontoxic methylphosphonic acids. The relative rapidity of the oxidation and perhydrolysis under these conditions is attributed to the microenvironment of the micropores. Apparently, the reactions are favored due to basic sites on the carbon surface. Our findings suggest a potential environmentally friendly route for decontamination of adsorbed CWAs, using H2O2 without the need of cosolvents or activators.
温和浓度的过氧化氢溶液（3-30%）可有效分解防护衣物和空气过滤器中微孔活性炭吸附的化学战剂（CWA）。在环境温度下，1-24 小时内，取决于 H2O2 浓度，吸附的芥子气（HD）、沙林和 VX 的分解率超过 95%。HD 被氧化为无毒的 HD-亚砜。神经毒剂被全氢化为相应的无毒甲基膦酸。在这些条件下，氧化和全氢解的相对快速性归因于微孔的微环境。显然，由于碳表面的碱性位，反应更有利。我们的发现表明，使用 H2O2 作为氧化剂，无需使用共溶剂或活化剂，为吸附的 CWA 提供了一种潜在的环保净化途径。
