Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity

Junya Ohyama; Taiki Koketsu; Yuta Yamamoto; Shigeo Arai; Atsushi Satsuma

doi:10.1039/c5cc05484b

Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity

Chem Commun (Camb). 2015 Nov 11;51(87):15823-6. doi: 10.1039/c5cc05484b.

Authors

Junya Ohyama¹, Taiki Koketsu², Yuta Yamamoto³, Shigeo Arai³, Atsushi Satsuma¹

Affiliations

¹ Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan. ohyama@apchem.nagoya-u.ac.jp satsuma@apchem.nagoya-u.ac.jp and Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan.
² Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan. ohyama@apchem.nagoya-u.ac.jp satsuma@apchem.nagoya-u.ac.jp.
³ Ecotopia Science Institute, Nagoya University, Nagoya, 464-8603, Japan.

PMID: 26372332
DOI: 10.1039/c5cc05484b

Abstract

We found that twinned gold nanoparticles (T-AuNPs) are generated at a high probability by CO treatment of TiO2-supported Au(iii) at room temperature. Because of the formation of T-AuNPs, the Au/TiO2 prepared by the CO treatment showed higher catalytic activity for CO oxidation than Au/TiO2 prepared by conventional H2 treatment.