文献类型：期刊文献

英文题名：Amine functionalized 3D porous organic polymer as an effective adsorbent for removing organic dyes and solvents

作者：He, Yan[1];Xu, Ting[1];Hu, Jun[1];Peng, Changjun[1];Yang, Qiang[2];Wang, Hualin[2];Liu, Honglai[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Environm Protect Key Lab Environm Risk Assessment, Shanghai 200237, Peoples R China

年份：2017

卷号：7

期号：48

起止页码：30500

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20172703891183);WOS:【SCI-EXPANDED(收录号:WOS:000403565400074)】；

基金：Financial support for this work was provided by the National Natural Science Foundation of China (No. 21136004, 91334203, 21176066), National Basic Research Program of China (2013CB733501), and the Fundamental Research Funds for the Central Universities of China (No. 222201313001).

语种：英文

外文关键词：Azo dyes - Stripping (dyes) - Organic polymers - Aromatic compounds - Organic solvents - Solutions - Wastewater treatment

摘要：Organic dyes and solvents are emerging pollutants; the development of new materials for their efficient adsorption and removal is thus of great significance. In this work, we report the application of an amine functionalized triptycene-based 3D polymer (TPP-NH2) as a novel adsorbent for the fast removal of organic dyes in aqueous solution and organic solvents with a view to understanding its adsorption kinetics, adsorption isotherms, desorption and adsorbent regeneration. The adsorption of organic dyes (cationic methylene blue, MEB, and anionic methyl orange, MO) on TPP-NH2 was fast, and most of the dyes were adsorbed in 60 min. The adsorption of MEB and MO follows pseudo-second-order kinetics and fits the Langmuir model, where the maximum adsorption capacity increased from 204.9 mg g(-1) to 560.6 mg g(-1) and 213.2 mg g (-1) to 803.2 mg g(-1) for MEB and MO, respectively, as the temperature increased, suggesting that the adsorption of MEB and MO on TPP-NH2 is favorable at high temperatures via an endothermic process. The pH has no obvious effect on the adsorption of MEB and MO. The used TPP-NH2 could be regenerated effectively and recycled at least five times without a significant loss of adsorption capacity. In addition, the TPP-NH2 can adsorb up to 33 times its own weight in organic solvents while wiping off the water. The high surface area, hierarchical porosity and pi-pi stacking interactions between the aromatic rings of MEB and MO and the aromatic rings of 3D TPP-NH2 were responsible for the efficient adsorption. Therefore, the TPP-NH2 that was synthesized using the facile strategy possesses significant potential in the treatment of wastewater.