文献类型：期刊文献

英文题名：Hyper-crosslinked β-cyclodextrin porous polymer: an adsorption-facilitated molecular catalyst support for transformation of water-soluble aromatic molecules

作者：Li, Haiying[1,2,3];Meng, Bo[4];Chai, Song-Hai[4];Liu, Honglai[1,2];Dai, Sheng[3,4]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA;[4]Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

年份：2016

卷号：7

期号：2

起止页码：905

外文期刊名：CHEMICAL SCIENCE

收录：;EI(收录号：20160501879526);WOS:【SCI-EXPANDED(收录号:WOS:000368835300007)】；

基金：H. Li and H. Liu thank the National Basic Research Program of China (2013CB733501), the National Natural Science Foundation of China (No. 91334203), the 111 Project of China (No. B08021) and the Fundamental Research Funds for the Central Universities of China. S. Chai and S. Dai were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division.

语种：英文

外文关键词：Adsorbates - Water pollution - Crosslinking - Gold nanoparticles - Adsorbents - Adsorption - Aromatic compounds

摘要：A hyper-crosslinked beta-cyclodextrin porous polymer (BnCD-HCPP) was designed and synthesized facilely by beta-cyclodextrin benzylation and subsequent crosslinking via a Friedel-Crafts alkylation route. The BnCD-HCPP shows an extremely high BET surface area, large pore volume, and high thermal stability, making it a highly efficient adsorbent for removal of aromatic pollutants from water. The adsorption efficiency in terms of distribution coefficient, defined as the ratio of adsorption capacity to equilibrium adsorbate concentration, ranged from 103 to 106 mL g(-1) within a concentration of 0-100 ppm, one order of magnitude higher than that of other beta-cyclodextrin-based adsorbents reported previously. The molar percentage of adsorbate to beta-cyclodextrin exceeded 300%, suggesting that the adsorption occurred not only in the cyclodextrin cavities via a 1 : 1 complexation, but also in the nanopores of the BnCD-HCPP created during the hyper-crosslinking. The BnCD-HCPP can be further functionalized by incorporation of gold nanoparticles for catalytic transformation of adsorbed phenolic compounds such as 4-nitrophenol to 4-aminophenol.