AI Article Synopsis
- Defense against chemical warfare agents (CWAs) is crucial, but current physical protection methods have limitations like residual toxicity and need for post-treatment.
- This study introduces a functional polymeric substrate combined with a metal-organic framework catalyst to remove toxicity instantly.
- Among various options, the PMB_40 composite coating demonstrated exceptional efficiency in decomposing nerve agent simulants and came close to fully neutralizing the real nerve agent GD under specific conditions.
Article Abstract
Defense against chemical warfare agents (CWAs) is regarded as a top priority for the protection of humanity, but it still depends on physical protection with severe limitations such as residual toxicity and post-treatment requirement. In this study, a strategically designed functional polymeric substrate was composited with a metal-organic framework catalyst to remove toxicity immediately. A series of PMMA-BPEI copolymers exhibited high processability as a coating and accelerated the catalytic activity of Zr(IV)-based metal-organic framework catalysts (UiO-66). Among them, PMB_40 composite coating on a cotton fabric, containing a PMMA-BPEI copolymer (PMMA/BPEI = 1/2) and 40% of UiO-66 catalyst, can efficiently decompose nerve agent simulants (methyl-paraoxon) under both liquid phase ( = 0.14 h) and humidified ( = 4.8 h) conditions. Moreover, a real agent, GD, was decomposed 100% by PMB_40 in 4 h at 25 °C and 65% relative humidity. On the basis of superior catalytic activity, the PMB composites are anticipated to be a potential material for active chemical protection coating.
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| http://dx.doi.org/10.1021/acsami.2c15961 | DOI Listing |
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