A bifunctional imidazolium-functionalized ionic porous organic polymer in water remediation. (9th September 2022)

• Record Type: Journal Article
• Authors: Sarkar, Sayantan; Chakraborty, Argha; Ranjan, Rishi; Nag, Probal; Vennapusa, Sivaranjana Reddy; Mukhopadhyay, Suman
• Is Part Of: Materials chemistry frontiers. Volume 6:Number 20(2022)
• Page Start: 3070
• Page End: 3083
• Publication Date: 2022-09-09
• Subjects: Materials science -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1039/d2qm00636g
• Languages: English
• ISSNs: 2052-1529

Abstract

Abstract : This work introduces a cationic porous organic polymer for fast and efficient capture of anionic pollutants and photocatalytic degradation of cationic dyes under solar irradiation. Abstract : Here we report the synthesis of a thermally and chemically robust novel ionic porous organic polymer (iPOP-ANT) with exchangeable Cl − ions by a one-step condensation reaction. The polymer works as a dual functionalized material towards the fast and efficient capture of toxic oxo-anions (Cr2 O7 2−, MnO4 − ) and anionic dyes (methyl orange, amaranth, and congo red) as well as towards the photocatalytic degradation of cationic dyes (rhodamine B, rhodamine 6G, and methylene blue) under solar irradiation. The material shows high uptake capacity, fast kinetics, and selectivity toward capturing anionic pollutants. The low optical band gap of the material (2.58 eV) makes it an ideal photocatalyst for the degradation of cationic dyes under solar irradiation. Moreover, the material shows excellent reusability in both adsorption and degradation. To the best of our knowledge, this is the first example of an iPOP showing both anion adsorption and photocatalytic dye degradation.