| Title: | Swellable Array Strategy Based on Designed Flexible Double Hypercross-linked Polymers for Synergistic Adsorption of Toluene and Formaldehyde |
| Author(s): | Wang R; Luan X; Yaseen M; Bao J; Li J; Zhao Z; Zhao Z; |
| Address: | "Key Laboratory of New Low-Carbon Green Chemical Technology, Education Department of Guangxi Zhuang Autonomous Region, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Chemistry and Chemical Engineering, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China. Institute of Chemical Science, University of Peshawar, Peshawar 25120, KP, Pakistan" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "High-capacity adsorption and removal of complex volatile organic compounds (VOCs) from real-world environments is a tough challenge for researchers. Herein, a swellable array adsorption strategy was proposed to realize the synergistic adsorption of toluene and formaldehyde on the flexible double hypercross-linked polymers (FD-HCPs). FD-HCPs exhibited multiple adsorption sites awarded by a hydrophobic benzene ring/pyrrole ring and a hydrophilic hydroxyl structural unit. The array benzene ring, hydroxyl, and pyrrole N sites in FD-HCPs effectively captured toluene and formaldehyde molecules through pi-pi conjugation and electrostatic interaction and weakened their mutual competitive adsorption. Interestingly, the strong binding force of toluene molecules to the skeleton deformed the pore structure of FD-HCPs and generated new adsorption microenvironments for the other adsorbate. This behavior significantly improved the adsorption capacity of FD-HCPs for toluene and formaldehyde by 20% under multiple VOCs. Moreover, the pyrrole group in FD-HCPs greatly hindered H(2)O molecule diffusion in the pore, thus efficiently weakening the competitive adsorption of H(2)O toward VOCs. These fascinating properties enabled FD-HCPs to achieve synergistic adsorption for multicomponent VOC vapor under a highly humid environment and overcame single-species VOC adsorption properties on state-of-the-art porous adsorbents. This work provides the practical feasibility of synergistic adsorption to remove complex VOCs in real-world environments" |
| Keywords: | *Toluene *Volatile Organic Compounds/chemistry Benzene Polymers Adsorption Formaldehyde flexible double hypercross-linked polymers high humidity swellable array strategy synergistic adsorption toluene and formaldehyde; |
| Notes: | "MedlineWang, Ruimeng Luan, Xinqi Yaseen, Muhammad Bao, Jingyu Li, Jing Zhao, Zhongxing Zhao, Zhenxia eng Research Support, Non-U.S. Gov't 2023/04/14 Environ Sci Technol. 2023 Apr 25; 57(16):6682-6694. doi: 10.1021/acs.est.3c00565. Epub 2023 Apr 13" |
