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A Sinter‐Resistant Catalytic System Based on Platinum Nanoparticles Supported on TiO 2 Nanofibers and Covered by Porous Silica
Author(s) -
Dai Yunqian,
Lim Byungkwon,
Yang Yong,
Cobley Claire M.,
Li Weiyang,
Cho Eun Chul,
Grayson Benjamin,
Fanson Paul T.,
Campbell Charles T.,
Sun Yueming,
Xia Younan
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201001839
Subject(s) - coating , sintering , materials science , porosity , nanoparticle , platinum , platinum nanoparticles , catalysis , nanotechnology , nanofiber , chemical engineering , metallurgy , composite material , chemistry , organic chemistry , engineering
Holey support : The generation of a porous coating of SiO 2 on Pt‐decorated TiO 2 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 SiO 2 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.