文献类型：期刊文献

英文题名：Cooperative catalytic activity of cyclodextrin and Ag nanoparticles immobilized on spherical polyelectrolyte brushes

作者：Liu, Jianjia[1];Wang, Jie[1];Zhu, Zhongming[1];Li, Li[1];Guo, Xuhong[1];Lincoln, Stephen F.[2];Prud'homme, Robert K.[3]

机构：[1]E China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia;[3]Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

年份：2014

卷号：60

期号：6

起止页码：1977

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20141917697967);WOS:【SCI-EXPANDED(收录号:WOS:000335196900004)】；

基金：The authors gratefully acknowledge the NSFC Grants 51273063 and 20774030, the Fundamental Research Funds for the Central Universities, the higher school specialized research fund for the doctoral program (20110074110003), the China Scholarship Council, and the Australian Research Council Grant DP110103177 for funding this work.

语种：英文

外文关键词：spherical polyelectrolyte brush; catalysis; silver nanoparticle; alpha-cyclodextrin

摘要：Significance Spherical polyelectrolyte brushes (SPB) loaded with silver nanoparticles (Ag-NP) were synthesized, and they were characterized in aqueous solution using TEM, ICP-AES and UV-vis spectroscopy. While the size distribution of the Ag-NP synthesized at a given temperature is quite uniform this distribution varies with change in synthesis temperature. The Ag-NP have a strong catalytic effect on the reduction of 4-nitrophenol to 4-aminophenol by NaBH4. The addition of alpha-cyclodextrin (alpha-CD) further accelerates this 4-nitrophenol reduction and modifies the associated activation parameters. This is attributed to alpha-CD complexing 4-nitrophenol in the vicinity of the Ag-NP surface and thereby aiding the catalysis. (c) 2014 American Institute of Chemical Engineers AIChE J, 60: 1977-1982, 2014