Citation: Haiqiang Zhao, Weihong Qi, Xinfeng Zhou, Haofei Wu, Yejun Li. Composition-controlled synthesis of platinum and palladium nanoalloys as highly active electrocatalysts for methanol oxidation[J]. Chinese Journal of Catalysis, ;2018, 39(2): 342-349. doi: 10.1016/S1872-2067(18)63020-7 shu

Composition-controlled synthesis of platinum and palladium nanoalloys as highly active electrocatalysts for methanol oxidation

a School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China;
b Key Laboratory of Non-ferrous Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, Hunan, China;
c Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, Hunan, China

Received Date: 20 September 2017
Revised Date: 27 December 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21373272).

Platinum and palladium (PtPd) alloy nanoparticles (NPs) are excellent catalysts for direct methanol fuel cells. In this study, we developed PtPd alloy NPs through the co-reduction of K₂PtCl₄ and Na₂PdCl₄ in a polyol synthesis environment. During the reaction, the feed molar ratio of the two precursors was carried over to the final products, which have a narrow size distribution with a mean size of approximately 4 nm. The catalytic activity for methanol oxidation reactions possible depends closely on the composition of as-prepared PtPd alloy NPs, and the NPs with a Pt atomic percentage of approximately 75% result in higher activity and stability with a mass specific activity that is 7 times greater than that of commercial Pt/C catalysts. The results indicate that through composition control, PtPd alloy NPs can improve the effectiveness of catalytic performance.
- Platinum and palladium alloy nanoparticles,
- Composition and size control,
- Methanol oxidation
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