Chemically robust functionalized covalent organic framework for the highly efficient and selective separation of bromine
Sahel Fajal, Dipayan Ghosh, Kallolmay Biswas, Writakshi Mandal, Nayan Sarkar, Gourab K. Dam, Anirban Roy, Antak Roychowdhury, Dipanjan Majumder, Rajashri Urkude, Mandar M. Shirolkar, Sujit K. Ghosh
Abstract
), high retention efficiency and reusability. Moreover, the adsorbent is able to sequestrate trace bromine (from 13 ppm to below 4 ppm) from aqueous medium with fast adsorption kinetics (86.3% within less than 3 h) and demonstrates the selective extraction of bromine over iodine under both static and dynamic conditions. These results were further utilized to demonstrate recycling-selective and highly efficient bromine capture from a real-water system, exhibiting excellent scalability and affordability, as exemplified using COF membranes in a continuous flow-through process.