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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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  1. Errata: Ergäzung: A Sinter-Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO2 Nanofibers and Covered by Porous Silica Volume 124, Issue 43, 10848, 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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Stützt ohne zu stören: Das Aufbringen einer porösen SiO2-Schicht auf Pt-modifizierte TiO2-Nanofasern ergibt einen sinterbeständigen Katalysator (siehe Bild). Die Pt-Nanopartikel sinterten bei Temperaturen bis 750 °C an Luft nicht, weil die SiO2-Schicht die Oberflächenwanderung physikalisch behindert; wegen der Porosität der Beschichtung behielt das System seine katalytische Aktivität aber bei.

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