Photothermal graphene/UiO-66-NH2 fabrics for ultrafast catalytic degradation of chemical warfare agent simulants.,Journal of Hazardous Materials

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Photothermal graphene/UiO-66-NH2 fabrics for ultrafast catalytic degradation of chemical warfare agent simulants.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2020-02-17 , DOI: 10.1016/j.jhazmat.2020.122332
Linna Song ₁ , Tianyu Zhao ₁ , Dongzhi Yang ₂ , Xuejiao Wang ₂ , Xinmin Hao ₃ , Yaxin Liu ₂ , Shiyi Zhang ₂ , Zhong-Zhen Yu ₁

Affiliation

Lightweight and wearable fabrics with rapid self-detoxification functions are highly desired to resist chemical warfare agents (CWAs). Metal organic frameworks (MOFs) with high specific surface area and customizability are singularly attractive because of their ability to effectively capture and catalytically degrade CWAs. Herein, photothermal graphene-based nanocomposite fabrics are designed by wet-spinning and chemical reduction of graphene oxide fibers followed by in situ growth of UiO-66-NH2. The flexible graphene fabrics decorated with UiO-66-NH2 nanoparticles exhibit an ultrafast photothermal catalytic decontamination of dimethyl 4-nitrophenyl phosphate (DMNP), a typical simulant of CWAs. The half-life of the degradation reaction decreases from 3.4 to 1.6 min under simulated solar light irradiation, a significant gain over the values reported in the literature. Furthermore, DMNP can be degraded in 20 min by the graphene/UiO-66-NH2 fabric, and even after 5 cycles the degradation efficiency still retains more than 92 %. More importantly, the photothermal conversion of graphene and its instantaneous heat transfer to the UiO-66-NH2 catalyst effectively accelerate the catalytic reaction kinetics, achieving the fast detoxification of DMNP. The combination of catalytic degradation of MOFs with photothermal conversion effect of graphene makes the lightweight and flexible fabrics promising for protection against CWAs and other pollutants.

中文翻译：

光热石墨烯/ UiO-66-NH2织物，用于化学战剂模拟物的超快速催化降解。

具有快速自解毒功能的轻质可穿戴织物非常需要抵抗化学战剂（CWA）。具有高比表面积和可定制性的金属有机骨架（MOF）具有独特的吸引力，因为它们能够有效捕获和催化降解CWA。本文中，通过对石墨烯氧化物纤维进行湿纺和化学还原，然后原位生长UiO-66-NH2来设计基于光热石墨烯的纳米复合织物。用UiO-66-NH2纳米粒子装饰的柔性石墨烯织物表现出超快的光热催化净化二甲基4-硝基苯基磷酸酯（DMNP）的能力，这是CWA的典型模拟物。在模拟太阳光照射下，降解反应的半衰期从3.4分钟降低至1.6分钟，大大超过了文献报道的值。此外，DMNP可以在20分钟内被石墨烯/ UiO-66-NH2织物降解，即使经过5个循环，降解效率仍保持92％以上。更重要的是，石墨烯的光热转化及其瞬时传热到UiO-66-NH2催化剂有效地促进了催化反应动力学，实现了DMNP的快速解毒。MOFs的催化降解与石墨烯的光热转化作用相结合，使轻巧而柔软的织物有望保护其免受CWA和其他污染物的侵害。石墨烯的光热转化及其向UiO-66-NH2催化剂的瞬时热传递有效地促进了催化反应动力学，实现了DMNP的快速解毒。MOFs的催化降解与石墨烯的光热转化作用相结合，使轻巧而柔软的织物有望保护其免受CWA和其他污染物的侵害。石墨烯的光热转化及其向UiO-66-NH2催化剂的瞬时热传递有效地促进了催化反应动力学，实现了DMNP的快速解毒。MOFs的催化降解与石墨烯的光热转化作用相结合，使轻巧而柔软的织物有望保护其免受CWA和其他污染物的侵害。

更新日期：2020-02-20

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