Green-chemistry Compatible Approach to TiO 2 -supported PdAu Bimetallic Nanoparticles for Solvent-free 1-Phenylethanol Oxidation under Mild Conditions

TiO -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 s...

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Bibliographic Details
Published inNano-micro letters Vol. 7; no. 3; p. 307
Main Authors Chang, Jian-Bing, Liu, Chang-Hai, Liu, Jie, Zhou, Yu-Yan, Gao, Xu, Wang, Sui-Dong
Format Journal Article
LanguageEnglish
Published Germany 2015
Subjects
Electronic structure
PdAu nanoparticles
TiO2 nanosupport
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Summary:TiO -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-TiO hybrids for solvent-free selective oxidation of 1-phenylethanol using O as the oxidant at the low temperature of 50 °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 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.
ISSN:2150-5551