文献类型：期刊文献

英文题名：Highly efficient removal of bulky tannic acid by millimeter-sized nitrogen-doped mesoporous carbon beads

作者：Chong, Yanping[1];Liu, Ke[1];Liu, Yu[1];Wang, Jitong[1];Qiao, Wenming[1];Ling, Licheng[1];Long, Donghui[1];Bai, Zhishan[2]

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

年份：2017

卷号：63

期号：7

起止页码：3016

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20170503319050);WOS:【SCI-EXPANDED(收录号:WOS:000402909600044)】；

基金：This work was partly supported by MOST (2014CB239702) and National Science Foundation of China (No. 21576090, No. 51302083, No. 51322805), and Shanghai Rising Star Program (15QA1401300).

语种：英文

外文关键词：adsorption; wastewater treatment; mesoporous carbon bead; surface chemistry

摘要：Millimeter-sized nitrogen-doped mesoporous carbon beads (NMCBs) with a controllable nitrogen content are synthesized for the first time via a suspension-polymerization assisted hard templating method. In contrast to conventional activated carbons, NMCBs exhibit outstanding structural advantages, including macroscopic morphology, a developed mesoporous structure and enriched surface chemistry. When used as adsorbents for the removal of the bulky organic pollutant tannic acid, these NMCBs demonstrated fast adsorption kinetics and very high adsorption capacity. The adsorption capacity strongly depends on the nitrogen content doped into the carbon framework. At a nitrogen content of 4.1 wt %, the adsorption capacity reaches 318 mg g(-1). The molecular mechanics simulation and zeta potential measurements suggest that the enhanced adsorption by nitrogen doping may be due to the electrostatic attraction between the nitrogen functional groups and the phenol groups of tannic acid. (c) 2017 American Institute of Chemical Engineers AIChE J, 63: 3016-3025, 2017