Polyaniline/aramid composite for carbon dioxide capture

Abstract

AbstractA novel composite based on conducting polymer, polyaniline/aramid, was prepared with the aim of capturing carbon dioxide. Polyaniline was synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate and subsequently used for modification of the aramid surface. The prepared polyaniline/aramid composite was characterized using electrokinetic analysis, scanning electron microscopy, Fourier transform infrared spectroscopy and nitrogen adsorption/desorption isotherms for determination of specific surface area and porosity and using carbon dioxide adsorption/desorption isotherms for determination of carbon dioxide capture. The capture capacity markedly increased from 22 cm3 g−1 for pristine aramid to 60 cm3 g−1 for the polyaniline/aramid composite. The results show that the new composite material could be used as an effective adsorbent of carbon dioxide and for applications based on its adsorption. The vision of advanced adsorbents with properties controlled by electric potential applied to conducting polymers is worth being considered. © 2023 Society of Industrial Chemistry.