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A Yolk@Shell Nanoarchitecture for Au/TiO 2 Catalysts
Author(s) -
Lee Ilkeun,
Joo Ji Bong,
Yin Yadong,
Zaera Francisco
Publication year - 2011
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.201007660
Subject(s) - calcination , catalysis , sintering , materials science , nanoparticle , chemical engineering , metal , shell (structure) , nanotechnology , metallurgy , composite material , chemistry , organic chemistry , engineering
Trapped inside : A new catalyst was developed where gold nanoparticles are encased inside hollow titania nanospheres (see picture). The new nanoarchitecture prevents the nanoparticles from sintering and losing their activity while still providing the reactants free access to the metal surface. The result is a catalyst capable of promoting the oxidation of CO at room temperature while surviving calcination at temperatures above 775 K.