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A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica

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This article is corrected by:

  1. Errata: Addition: A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica Volume 51, Issue 43, 10692, Article first published online: 17 October 2012

  • This work was supported by the Toyota Motor Engineering & Manufacturing North America, Inc. Part of the research was performed at the Nano Research Facility (NRF), a member of the National Nanotechnology Infrastructure Network (NNIN) that is funded by the National Science Foundation under award no. ECS-0335765. As a visiting graduate student from Southeast University, Y.D. was also partially supported by the National Basic Research Program (973 program, 2007CB936300), the Innovation Program for Graduate Students in Jiangsu Province (CX08B-051Z), and the China Scholarship Council. We thank Prof. Jimmy Liu at the University of Missouri (St. Louis) for helping us with the sintering experiments under hydrogen gas.

Abstract

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Holey support: The generation of a porous coating of SiO2 on Pt-decorated TiO2 nanofibers enables the preparation of a sinter-resistant catalytic system (see picture). The Pt nanoparticles could resist sintering at temperatures up to 750 °C in air, as the SiO2 coating acts as a physical barrier that slows down surface migration, but the system remained catalytically active because of the porous nature of the coating.

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