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Synthesis of PdAu 3:1/C nanoparticles using phase-transfer method for ethanol electro-oxidation

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Abstract

PdAu 3:1/C-1 and PdAu 3:1/C-2 nanoparticles were prepared in methylene chloride and water, respectively. The syntheses featured the use of tetrabutylammonium hydroxide as a phase-transfer agent and stabilizer. Electrochemical characterization showed that compared with PdAu 3:1/C-2, PdAu 3:1/C-1 had superior ethanol oxidation reaction (EOR) activity in alkaline media. The results of X-ray powder diffraction indicated that PdAu 3:1/C-1 was an alloy, whereas PdAu 3:1/C-2 was a heterogeneous mixture of the two metals. Moreover, transmission electron microscope analyses revealed that the PdAu 3:1/C-1 nanoparticles dispersed homogeneously on the carbon carrier without evident aggregation. Further, the X-ray photoelectron spectroscopy results demonstrated that the hydroxyl content was higher on the surface of PdAu 3:1/C-1 than that of PdAu 3:1/C-2. The increase of adsorptive hydroxyl on the surface of PdAu 3:1/C-1 could facilitate the adsorption and oxidation of CO on the catalyst surface, thus improving EOR activity and catalyst stability.

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Acknowledgments

This work was financially supported by the Jilin Provincial Science and Technology Project of China (No. 20120741) and National Natural Science Foundation of China (No. 21461027).

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  1. Department of Chemistry, College of Science, Yanbian University, Yanji, 133002, China

    Biyao Jin, Yanyu Zhang & Lianhua Zhao

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  1. Biyao Jin
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  2. Yanyu Zhang
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  3. Lianhua Zhao
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Correspondence to Lianhua Zhao.

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Jin, B., Zhang, Y. & Zhao, L. Synthesis of PdAu 3:1/C nanoparticles using phase-transfer method for ethanol electro-oxidation. J Appl Electrochem 46, 1147–1155 (2016). https://doi.org/10.1007/s10800-016-0994-5

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