Multiple chemical warfare agent simulant decontamination by self-driven microplasma

Abstract

Low-temperature plasma is a green and high efficiency technology for chemical warfare agents (CWAs) decontamination. However, traditional plasma devices suffer from the problems of high power composition and large power supply size, which limit their practical applications. In this paper, a self-driven microplasma decontamination system induced by dielectric-dielectric rotary triboelectric nanogenerator (dd-rTENG) was innovatively proposed for the decontamination of CWAs simulants. Microplasma was characterized by electrical measurements, optical emission spectrum and ozone concentration detection. With output voltage of -3460 V, the dd-rTENG can successfully excite microplasma in air. The reactive species such as OH, O(1D), Hα, and O3 were detected. The decontamination rate of 2-chloroethyl ethyl sulfide (2-CEES) reached 100 % within 3 min plasma treatment. While the decontamination rate of malathion and dimethyl methylphosphonate (DMMP) reached 65.92 % and 60.88 % after 7 min plasma treatment, respectively. In addition, the decontamination rates gradually decreased with the increasing of simulants concentration. The typical products were identified and analyzed. This study demonstrates the broad-spectrum and feasibility of the dd-rTENG-microplasma for CWAs elimination, which provides significant guidance for their practical applications in the future.

Solution Blow Spinning Ultrafine Fiber Sponge-Loaded MOF-808 for Effective Adsorption and Degradation of Mustard Gas

“…Chemical methods, such as oxidants and strong alkalis, can effectively destroy the structure of chemical warfare agents to form nontoxic substances, but their long-term usage corrodes the equipment surface and accelerates its aging. Biological methods employ concrete-eating bacteria and synthetic bacteria, but the process involves cumbersome preparation, long cycle, and low efficiency. − On actual battlefields, emergency wiping cloths in individual emergency treatment kits are essential to quickly deal with equipment contaminated with chemical warfare agents. One of the commonly used wiping cloths is cotton fabrics, and the other is porous carbon-containing nanofibers .…”