All‐in‐One: Sensing, Adsorptive Removal, and Photocatalytic Degradation of Nitro‐Explosive Contaminants by Microporous Polycarbazole Polymer,Macromolecular Rapid Communications

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All‐in‐One: Sensing, Adsorptive Removal, and Photocatalytic Degradation of Nitro‐Explosive Contaminants by Microporous Polycarbazole Polymer
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-11-26 , DOI: 10.1002/marc.202000469
Anupam Manna _{1,

2} , Monojit Das _{1,

2} , Soumya Mukherjee _{1,

2} , Sanjib Das _{1,

2}

Affiliation

A highly multitasking 3D polycarbazole based microporous organic polymer (ACzMOP) is rationally prepared via a low‐cost FeCl₃ catalyzed polymerization route utilizing a newly developed Td ‐symmetric adamantane core tetracarbazolic monomer. The nitrogen‐rich ACzMOP integrated with photo‐redox active electron‐rich π‐conjugated polycarbazole modules featuring large BET surface area of 1568 m ²g ⁻¹, pore volume of 1.58 cc g ⁻¹, excellent physicochemical stability, and strong fluorescence in both aqueous and solid phases. Aqueous suspension including ACzMOP coated paper strip is highly responsive to the aqueous solution of nitroaromatics especially 2,4‐dinitrotoluene, an unavoidable intermediate of 2,4,6‐trinitrotoluene contamination, with ultra‐trace level detection capability (up to 0.32 ppb). The thin layer of solid polymer is capable of detecting nitroaromatic vapors, especially nitrotoluenes in a very sensitive manner. Moreover, the polymer exhibit record uptake of nitrotoluenes and nitrophenols with maximum uptake capability up to 510 mg g ⁻¹ setting a new benchmark among known porous materials. The polymer efficiently degrades toxic 4‐nitrophenol to the value‐added 4‐aminophenol precursor (TOF = 0.143 h ⁻¹) via photocatalytic pathway. For the very first time, ACzMOP as a single material system is capable of efficiently sensing and removing all sorts of nitroaromatic contaminations with regenerability under mild washing/vacuum conditions.

中文翻译：

多合一：微孔聚咔唑聚合物对硝基炸药的感测，吸附去除和光催化降解

通过使用新开发的Td对称金刚烷核四咔唑单体的低成本FeCl ₃催化聚合路线合理地制备了高度多任务的3D聚咔唑基微孔有机聚合物。富氮ACzMOP与光氧化还原活性富电子的π共轭聚咔唑模块相结合，BET表面积大，为1568 m ² g ^-1，孔体积为1.58 cc g ^-1，优异的理化稳定性以及在水相和固相中均具有强荧光。包括ACzMOP涂层纸带的水悬浮液对硝基芳族化合物水溶液，特别是2,4,6-二硝基甲苯（一种不可避免的中间体2,4,6-三硝基甲苯污染）具有高度响应性，具有超痕量水平的检测能力（最高0.32 ppb）。固体聚合物薄层能够以非常灵敏的方式检测硝基芳族蒸气，尤其是硝基甲苯。此外，该聚合物表现出对硝基甲苯和硝基苯酚的记录吸收，最大吸收能力高达510 mg g ^-1，在已知的多孔材料中树立了新的标杆。该聚合物有效地将有毒的4-硝基苯酚降解为增值的4-氨基苯酚前体（TOF = 0.143 h ^-1）通过光催化途径。作为一种单一材料系统，ACzMOP首次能够在温和的洗涤/真空条件下以可再生的方式有效地感测和去除各种硝基芳族污染物。

更新日期：2021-01-22

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