Green-chemistry Compatible Approach to TiO2-supported PdAu Bimetallic Nanoparticles for Solvent-free 1-Phenylethanol Oxidation under Mild Conditions

被引：29
作者：
Chang, Jian-Bing [1 ]
Liu, Chang-Hai [1 ]
Liu, Jie [1 ]
Zhou, Yu-Yan [1 ]
Gao, Xu [1 ]
Wang, Sui-Dong [1 ]
机构：
[1] Soochow Univ, Western Univ, Joint Ctr Synchrotron Radiat Res, Inst Funct Nano & Soft Mat FUNSOM,State Key Lab C, Suzhou 215123, Jiangsu, Peoples R China
来源：
NANO-MICRO LETTERS | 2015年 / 7卷 / 03期
基金：
中国国家自然科学基金;
关键词：
PdAu nanoparticles; TiO2; nanosupport; Electronic structure; AEROBIC OXIDATION; SELECTIVE OXIDATION; ALCOHOL OXIDATION; GOLD NANOPARTICLES; CATALYTIC-ACTIVITY; AQUEOUS-SOLUTION; BENZYL ALCOHOL; AU; PALLADIUM; ALLOY;
D O I：
10.1007/s40820-015-0044-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：307 / 315
页数：9
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