Nitrogen-rich triazine-based porous polymers for efficient removal of bisphenol micropollutants. (November 2022)

• Record Type: Journal Article
• Authors: Yang, Xuechun; Zhang, Xiaoyi; Chen, Xinwei; Gao, Xiaoying; Liu, Yunjia; Weng, Jinlan; Yang, Shenghong; Gui, Tian; Chen, Xiangshu; Zhao, Rusong; Liu, Jian
• Is Part Of: Chemosphere. Volume 307:Part 3(2022)
• Publication Date: 2022-11
• Subjects: Nitrogen-rich triazine-based -- Bisphenol micropollutants -- Hydrogen bonding -- π-π electron-donor-acceptor interaction -- Micropore preservation; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.135919
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Achieving both rapid adsorption rate and high adsorption capacity for bisphenol micropollutants from aquatic systems is critical for efficient adsorbents in water remediation. Here, we elaborately prepared three nitrogen-rich triazine-based porous polymers (NTPs) with similar geometric configurations and nitrogen contents (41.70–44.18 wt%) while tunable BET surface areas and micropore volumes in the range of 454.7–536.3 m 2 g −1 and 0.20–0.84 cm 3 g −1, respectively. It was systematically revealed that the synergy of hydrogen bonding, π−π electron-donor-acceptor interaction, and micropore preservation promoted the rapid (within 5 min) and high capacity adsorption of bisphenols by NTPs. Particularly, microporous-dominated NTPs-3 with the highest micro-pore volume (0.84 cm 3 g −1 ) displays remarkable adsorption capacity towards bisphenol A as evidenced by the adsorption capacity of 182.23 mg g −1 . A simple column filter constructed by NTPs-3 also expressed good dynamic adsorption and regeneration capacity. This work provided new insight into the rational design and engineering of nitrogen-rich porous polymers for the remediation of micropollutant wastewater. Graphical abstract: Three nitrogen-rich triazine-based porous polymers with similar geometric configurations and nitrogen contents while tunable BET surface areas and micropore volumes were used for the adsorption of bisphenol micropollutants. Image 1 Highlights: NTPs have similar geometric configurations and nitrogen contents while tunable porosities. The adsorption mechanism is the synergy of hydrogen bonding, π−π interaction, and micropore preservation. NTPs-3 expressed rapid and high capacity adsorption of bisphenols. A simple column filter constructed by NTPs expressed good dynamic adsorption and regeneration capacity.