文献类型：期刊文献

英文题名：Recoverable Platinum Nanocatalysts Immobilized on Magnetic Spherical Polyelectrolyte Brushes

作者：Wu, Shuang[1,2,3];Kaiser, Julian[2,3];Guo, Xuhong[1];Li, Li[1];Lu, Yan[2,3];Ballauff, Matthias[2,3]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Helmholtz Zentrum Berlin Mat & Energie GmbH, D-14109 Berlin, Germany;[3]Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

年份：2012

卷号：51

期号：15

起止页码：5608

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20121714963927);WOS:【SCI-EXPANDED(收录号:WOS:000302882400029)】；

基金：The authors are thankful for the financial support of the National Natural Science Foundation of China (Grant No. 20774028), the Fundamental Research Funds for the Central Universities, the Key Basic Research Project of Shanghai Science and Technology Commission (10JC1403800), the Scientific and Technological Project of Shanghai Science and Technology Commission (10111100103), and the Chinese Scholarship Council.

语种：英文

外文关键词：Thermogravimetric analysis - Platinum - Nanocatalysts - Catalyst activity - X ray diffraction - Polyelectrolytes - Sodium Borohydride

摘要：Recoverable platinum nanocatalysts immobilized on magnetic spherical polyelectrolyte brushes (MSPB) were synthesized and characterized by high resolution transmission electron microscope (HRTEM), thermal gravimetric analysis (TGA), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). High catalytic activity was found by photometrically monitoring the reduction of 4-nitrophenol by NaBH4 in the presence of MSPB-Pt composites. An excellent stability and recyclability of catalyst was observed after consecutive eight runs following by external magnetic-separation and redispersion. This novel approach provides an excited potential application in preparation of recyclable metal nanocatalysts with high activity.