caa a22 4500 463228774 CHVBK 20180405153235.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1571-4 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1571-4 Method for preparing highly dispersed Pt catalysts on mesoporous carbon support [Elektronische Daten] [Jianhuang Zeng, Fabing Su, Jim Lee, X. Zhao, Jianjun Chen, Xiaohua Jiang] Two Pt catalysts supported on template-synthesized mesoporous carbons (MC) were prepared by the conventional wet-impregnation method (Pt-impreg/MC) and by the less commonly used colloidal deposition method (Pt-coll/MC) to examine the effect of preparation method on catalyst performance. The catalysts were characterized by transmission electron microscopy, field-emission electron microscopy, thermogravimetric analysis and X-ray diffraction. The electro-oxidation of methanol in acidic solutions for direct methanol fuel cells at room temperature was used as the test reaction. CO anodic stripping voltammetry and cyclic voltammetry both recorded enhanced performance for Pt-coll/MC relative to Pt-impreg/MC. The poorer application performance of Pt-impreg/MC can be attributed to the transport resistance in the mesopores, and to the entrapment of a sizable fraction (40%) of Pt nanoparticles in the mesopores which are not readily accessible to the reactants under the reaction conditions. Springer Science+Business Media, LLC, 2007 Zeng Jianhuang Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut Su Fabing Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut Lee Jim Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut Zhao X. Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut Chen Jianjun Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut Jiang Xiaohua Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7191-7197 0022-2461 42:17<7191 2007 42 10853 https://doi.org/10.1007/s10853-007-1571-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1571-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zeng Jianhuang Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut NATIONALLICENCE 700 1- Su Fabing Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut NATIONALLICENCE 700 1- Lee Jim Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut NATIONALLICENCE 700 1- Zhao X. Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore, Singapore aut NATIONALLICENCE 700 1- Chen Jianjun Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut NATIONALLICENCE 700 1- Jiang Xiaohua Room C711, Research Institute of Tsinghua University in Shenzhen, Shenzhen High-Tech Industrial Park, 518057, Shenzhen, China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/17(2007-09-01), 7191-7197 0022-2461 42:17<7191 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer