A covalent organic polymer as an efficient chemosensor for highly selective H2 S detection through proton conduction

Chemical Communications : Chem Comm
Sayan MaitiApurba K Das

Abstract

A hydrazide based covalent organic polymer (COP) with pyridine functionalities has been synthesized and used to fabricate an efficient chemosensor for the detection of gaseous H2S at 25 °C through a proton conduction process. The gas sensing behavior of the COP has been measured in a dynamic flow-through resistance measurement system. The COP fabricated sensor shows a lower response time of 9 s with a recovery time of 12 s, when the experiment is performed with a H2S concentration of 200 ppm at 25 °C. It also shows high selectivity to H2S gas compared to other gases such as CO2, NH3, CO and NO2.

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Citations

Jul 15, 2021·ACS Applied Materials & Interfaces·Wen-Li PengAnmin Zheng

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Methods Mentioned

BETA
NMR
scanning
transmission
atomic force microscopy
electron beam
AFM

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