1. Fabrication of chitin based hydrophilic hyper-crosslinked porous polymer for efficiently removing bisphenol A from water.
- Author
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Li, Shuofeng, Li, Zhi, Dong, Yanli, Wang, Qianqian, Wang, Chun, Wang, Zhi, and Wu, Qiuhua
- Subjects
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POROUS polymers , *BISPHENOL A , *CHITIN , *CHEMICAL stability , *ADSORPTION kinetics , *ADSORPTION capacity - Abstract
Water pollution caused by bisphenol A (BPA) has become the world problem. Designing and preparing cost-effective and biodegradable sorbents for the effectively adsorptive removal of bisphenol A from wastewater is of immense significance. Herein, a natural polysaccharide (chitin) was used as raw materials to be grafted with styrene (GS), then crosslinked with α,α'-dichloro-p-xylene (DCX) to form the hyper-crosslinked polymer (labeled as CGS@DCX). The CGS@DCX showed high adsorptive affinity for bisphenol A, with adsorption capacity of 441 mg g−1. Various studies gave an insight into the adsorption process, demonstrating that the highly efficient adsorption of BPA by the CGS@DCX is mainly based on the π-π stacking, hydrogen-bond interaction, polar interaction and pore adsorption. Moreover, the CGS@DCX had high chemical stability, good reusability (9 cycles) and fast adsorption kinetics (10 min) for adsorption of BPA. This work provides a promising strategy for the design and synthesis of novel yet eco-friendly sorbents to solve environmental problems. • A bio-sorbent, CGS@DCX, is prepared using natural chitin as raw material. • CGS@DCX displays large adsorption capacity and fast adsorption rate towards BPA. • Multiple interaction forces promote the BPA adsorption on the CGS@DCX bio-sorbent. • The CGS@DCX exhibited good application prospect for removal of other pollutants. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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