| Title: | Constructing novel hyper-crosslinked conjugated polymers through molecular expansion for enhanced gas adsorption performance |
| Author(s): | Shang Q; Cheng Y; Gong Z; Yan Y; Han B; Liao G; Wang D; |
| Address: | "Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China. Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China. Electronic address: liaogy@cug.edu.cn. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Yangtze River Delta Branch, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Yiwu 322015, China" |
| DOI: | 10.1016/j.jhazmat.2021.127850 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The porous organic polymers have been considered as effective materials for gas storage and adsorption. Herein, we synthesized highly crystalline nitrogen-rich covalent triazine frameworks (CTFs) by polycondensation for preparing the novel hyper-cross-linked conjugated polymers (HCCPs) with tunable specific surface area and pore volume through coupling Friedel-Crafts reaction, in which 1,4-Bis(chloromethyl)benzene and 4,4-Bis(chloromethyl)biphenyl as the expansion molecules were pillared between the layers of CTF-HUST. This technology not only increased the specific surface area and total pore volume of CTF-HUST by 2.56 and 4.68 times, but also greatly enhanced the utilization of adsorption sites of CTF-HUST. The HCCP2-1.25 exhibited the highest surface area (1349.29 m(2)g(-1)) among these HCCPs and demonstrated excellent adsorption performance for ethyl acetate (1605.14 mg/g), ethanol (1371.49 mg/g), 1,2-Dichloroethane (1971.68 mg/g), benzene (1151.77 mg/g) and toluene (1024.28 mg/g) due to the multiple C-H...O, C-H...Cl, O-H...N and C-H...pi interactions between volatile organic compounds (VOCs) and HCCPs framework. Moreover, CO(2) and H(2) storage capacities of the HCCP2-1.25 were 8.02 wt% and 1.54 wt%, 1.66 and 1.67 times higher than CTF-HUST, respectively. This study developed a simple and effective molecular expansion strategy to synthesize a series of novel high-surface-area porous polymers for potential applications in the environmental field" |
| Keywords: | Adsorption HCCPs Porous organic polymers VOCs; |
| Notes: | "PubMed-not-MEDLINEShang, Qigao Cheng, Yuhao Gong, Zhenpeng Yan, Ying Han, Bo Liao, Guiying Wang, Dongsheng eng Netherlands 2021/11/28 J Hazard Mater. 2022 Mar 15; 426:127850. doi: 10.1016/j.jhazmat.2021.127850. Epub 2021 Nov 20" |
