期刊
NANO-MICRO LETTERS
卷 7, 期 3, 页码 307-315出版社
SHANGHAI JIAO TONG UNIV PRESS
DOI: 10.1007/s40820-015-0044-6
关键词
PdAu nanoparticles; TiO2 nanosupport; Electronic structure
资金
- National Natural Science Foundation of China [61274019]
- Collaborative Innovation Center of Suzhou Nano Science Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
TiO2-supported PdAu bimetallic nanoparticles (NPs) with small size and good dispersity were prepared by the room-temperature ionic liquid-assisted bimetal sputtering, which is simple, environmentally friendly, and free of additives and byproducts. Pd/Au atomic ratio can be tuned by controlling the sputtering conditions simply. High catalytic activity was found in PdAu-NPs-TiO2 hybrids for solvent-free selective oxidation of 1-phenylethanol using O-2 as the oxidant at the low temperature of 50 degrees C and low pressure of 1 atm. It was found that Pd/Au ratio strongly affected the catalytical activity, and the highest conversion of about 35 % and turnover frequency of about 421 h(-1) were achieved at 1:1 of Pd/Au atomic ratio. The synergistic effect in PdAu NPs was also discussed based on the comprehensive characterization results. The present approach may offer an alternative platform for future development of green-chemistry compatible bimetallic nanocatalysts.
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