Sintering‐Resistant Metal Catalysts Supported on Concave‐Convex Surface of TiO2 Nanoparticle Assemblies. Issue 16 (4th July 2018)

• Record Type: Journal Article
• Authors: Duriyasart, Farkfun; Irizawa, Akito; Hayashi, Kahoko; Ohtani, Masataka; Kobiro, Kazuya
• Is Part Of: ChemCatChem. Volume 10:Issue 16(2018)
• Page Start: 3392
• Page End: 3396
• Publication Date: 2018-07-04
• Subjects: gold -- catalyst -- catalyst support -- oxidation -- concave-convex; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201800624
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: We herein describe a novel use of spherical nanoparticle assemblies of TiO2 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 TiO2 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 TiO2 support and sintering resistance even after several cycles of the heat stress reaction at high temperatures. Abstract : Mighty fine catalysis : Ultrafine surface concave‐convex structure of TiO2 spherical assemblies prevents sintering yielding excellent catalyst stability and durability.