Syntheses of Ag@Pd@Pt Nanoparticles with Tunable Shell Thickness for Electrochemical Oxidation of Formic Acid

Authors

Xiao-dong LIN, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Du-hong CHEN, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Zhong-qun TIAN, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;Follow

Corresponding Author

Zhong-qun TIAN(zqtian@xmu.edu.cn)

Abstract

In an effort to lower cost of a catalyst, the silver (Ag) core with palladium (Pd) layer then platinum (Pt) island (Ag@Pd@Pt) nanoparticles were synthesized and the electrocatalytic activity of Ag@Pd@Pt nanoparticles on formic acid was compared with that of Au@Pd@Pt nanoparticles reported previously. The results showed that the existence of a small amount of Pt could significantly improve the activity of the catalyst. When the surface coverage of Pt approached 0.5 monolayers, the activity of Ag@Pd@Pt nanoparticles reached the maximum. Though the onset potential of the electro-oxidation was slightly more positive (about 50 mV), the overall electrocatalytic activity of Ag@Pd@Pt nanoparticles was similar to that of the Au@Pd@Pt nanoparticles. The relationship between the changing specific surface area and the electrocatalytic activity behavior of Ag@Pd@Pt nanoparticles in formic acid was also studied. The price of Ag@Pd@Pt nanoparticles with Ag core of 9 nm supported by activated carbon was ~ 220 times lower than that of 55 nm Au@Pd@Pt nanoparticles based on the similar electocatalytic activity being obtained.

Graphical Abstract

Keywords

Au@Pd@Pt nanoparticles, tunable shell thickness, electrocatalytic oxidation of formic acid

DOI Link

https://doi.org/10.13208/j.electrochem.160569

Publication Date

2016-12-28

Online Available Date

2016-12-02

Revised Date

2016-11-28

Received Date

2016-09-23

Recommended Citation

Xiao-dong LIN, Du-hong CHEN, Zhong-qun TIAN. Syntheses of Ag@Pd@Pt Nanoparticles with Tunable Shell Thickness for Electrochemical Oxidation of Formic Acid[J]. Journal of Electrochemistry, 2016 , 22(6): 570-576.
DOI: 10.13208/j.electrochem.160569
Available at: https://jelectrochem.xmu.edu.cn/journal/vol22/iss6/4