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Preparation of TiO2-supported twinned gold nanoparticles by CO treatment and their CO oxidation activity
Junya Ohyama1, Taiki Koketsu2, Yuta Yamamoto3
1Graduate 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.
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.
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