文献类型：期刊文献

英文题名：Hypercrosslinked mesoporous polymers: Synthesis, characterization and its application for catalytic reduction of 4-nitrophenol

作者：Zhou, Huimin[1,2];Chen, Qibin[1,2];Tong, Xuefeng[1,2];Liu, Honglai[1,2]

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

年份：2020

卷号：37

外文期刊名：COLLOID AND INTERFACE SCIENCE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000553355800004)】；

基金：This work is supported by the National Natural Science Foundation of China (No. 21576079, 91834301), the 111 Project of Ministry of Education of China (No. B08021), and the Fundamental Research Funds for the Central Universities of China.

语种：英文

外文关键词：Hypercrosslinked polymers; Mesoporous; 4-nitrophenol; Bismuth; Ionic liquids

摘要：A mesoporous hypercrosslinked polymer (HCP), derived from a Friedel-Crafts alkylation reaction of 1,4-bis (chloromethyl)benzene and a precursor contained heterocyclic ionic liquids, was synthesized, having a high specific surface area with abundant mesopore and specific porosity. In order to reduce 4-nitrophenol (4-NP) to 4-aminophenol (4-AP), a new bismuth nanoparticle/HCP composite (Bi/HCP) as a catalyst was prepared, where the HCP was used as a catalyst carrier. Herein, the HCP was firstly impregnated into a BiCl3 solution to adsorb the Bi3+ ions. After that, these Bi3+ ions adsorbed were then reduced in situ using KBH4, affording the ultimate Bi/HCP composite. In such Bi/HCPs, Bi nanoparticles with a small diameter of 1-3 nm were evenly dispersed. In this work, the Bi/HCPs exhibit an excellent catalytic performance toward the reduction of 4-NP with a low loading, the reaction rate constant k is calculated to be 2.2 min(-1), and the catalytic activity did not decrease even after 8 reaction cycles.