Premium
Sintering‐Resistant Metal Catalysts Supported on Concave‐Convex Surface of TiO 2 Nanoparticle Assemblies
Author(s) -
Duriyasart Farkfun,
Irizawa Akito,
Hayashi Kahoko,
Ohtani Masataka,
Kobiro Kazuya
Publication year - 2018
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201800624
Subject(s) - sintering , materials science , nanoparticle , catalysis , exothermic reaction , chemical engineering , dispersion (optics) , metal , particle (ecology) , nanotechnology , composite material , metallurgy , chemistry , organic chemistry , physics , oceanography , optics , geology , engineering
We herein describe a novel use of spherical nanoparticle assemblies of TiO 2 with ultrafine surface concave‐convex structure as a catalyst support to prevent the sintering of dispersed metal nanoparticles. Owing to the unique surface structure derived from their fine primary particles, the TiO 2 nanoparticle assemblies show excellent dispersion ability of Au nanoparticles on their rough surface. Extremely exothermic CO oxidation as a probe reaction confirmed the high catalytic activity and stability of Au nanoparticles on the TiO 2 support and sintering resistance even after several cycles of the heat stress reaction at high temperatures.