ELECTROCHEMICAL OXIDATION OF CH3OH ON THE SURFACE OF NANOSTRUCTURED BIMETALLIC Pd-Au/GC ELECTRODES

2018;
: 105-110
1
Lviv Polytechnic National University
2
Lviv Polytechnic National University

The catalytic activity of nanostructured Pd-Au in electrochemical oxidation of СН3ОН
in an alkaline environment was researched by the method of cyclic voltammetry. It was found,
that during the in electrochemical oxidation of methanol on the surface of the Pd-Au/GC
electrode is manifested sequential catalytic action of components Pd and Au. An increase in
the content of palladium accelerates the complete oxidation of methane, contributing to a
decrease in the content of intermediates, indicating the high efficiency of nanostructured Pd-
Au/GC electrodes.

1. Волков С. В. Нанохімія, наносистеми, наноматеріали / С. В. Волков, Є. П. Ковальчук,
В. М. Огненко, О. В. Решетняк. – К.: Наук. думка, 2008. – 423 с. 2. Guzman J. Catalysis by supported
gold: correlation between catalytic activity for CO oxidation and oxidation states of gold / J. Guzman,
B. C. Gates // J. Amer. Chem. Soc. – 2004. – Vol. 126, Nо. 9. – P. 2672–2673. 3. Savadogo O. New
palladium alloys catalyst for the oxygen reduction reaction in an acid medium / O. Savadogo, K. Lee,
K. Oishi, S. Mitsushima, N. Kamiya // Electrochem. Commun. – 2004. – Vol. 6, Nо. 2. – P. 105–109.
4. Fernandez J. L. Thermodynamic guidelines for the design of bimetallic catalysts for oxygen
electroreduction and rapid screening by scanning electrochemical microscopy. M-Co (M: Pd, Ag, Au) /
J. L. Fernandez, D. A. Walsh, A. J. Bard // J. Am. Chem. Soc. V. – 2005. – Vol. 127, Nо. 1. – P. 357–365.
5. Sarkar A. Low cost Pd–W nanoalloy electrocatalysts for oxygen reduction reaction in fuel cells /
A. Sarkar, A. V. Murugan, A. Manthiram // J. Mater. Chem. – 2009. – Vol. 19, N 1. – P. 159–165.
6. Wang W. Carbon-supported Pd-Co bimetallic nanoparticles as electrocatalysts for the oxygen reduction
reaction / W. Wang, D. Zheng, C. Dua, Z. Zoua, X. Zhang, B. Xia, H. Yang, D. L. Akins // J. Power
Sources. – 2007. – Vol. 167, Nо. 2. – P. 243–249. 7. Xu J. B. Stabilization of the palladium electrocatalyst
with alloyed gold for ethanol oxidation / J. B. Xu, T. S. Zhao, S. Y. Shen, Y. S. Li. // Int. J. Hydrogen
Energy. – 2010. – Vol. 35. – P. 6490–6500. 8. Hong W. Synthesis of dendritic PdAu nanoparticles with
enhanced electrocatalytic activity / W. Hong, C. Shang, J. Wang, E. Wang // Electrochem. Commun. –
2014. – Vol. 48. – P. 65–68. 9. Sirlane G. da Silva. PdAu/C Electrocatalysts as anodes for direct formate
І
ІІ
110
fuel cell / Sirlane G. da Silva, Júlio César M. Silva, Guilherme S. Buzzo, Estevam V. Spinacé, Almir
O. Neto, Mônica H. M. T. Assumpção // Electrocatalysis. – 2015. – Vol. 6. – P. 442–446. 10. Renjith A.
One step preparation of ‘ready to use’ Au@Pd nanoparticle modified surface using deep eutectic solvents
and a study of its electrocatalytic properties in methanol oxidation reaction / A. Renjith,
V. Lakshminarayanan // J. Mater. Chem. A. – 2015. – Vol. 3, Nо. 6. – P. 30193028. 11. Yin Z. Supported
bimetallic PdAu nanoparticles with superior electrocatalytic activity towards methanol oxidation / Z. Yin,
M. Chi, Q. Zhu, D. Ma, J. S. Xinhe // J. Mater. Chem. A. – 2013. – Vol. 1, Nо. 32. – P. 9157–9163.
12. Pokhmurskii V. I. Formation of palladium nanoparticles under pulse current in a dimethylformamide
solution / V. I. Pokhmurskii, O. I. Kuntyi, S. A. Kornii, O. I. Bilan’, E. V. Okhermchuk // Protection of
Metals and Physic. Chem. Surfac. – 2011. – Vol. 47. – P. 59–62. 13. Sus L. Controlled gold deposition by
pulse electrolysis / L. Sus, Ye. Okhremchuk, I. Saldan, O. Kuntyi, O. Reshetnyak, S. Korniy // Materials
Letters. – 2015. – Vol. 139. – P. 296–299. 14. Fratini E. Nucleation and growth of Au and Au–Pd
nanoparticles at the beginning of electrochemical deposition / E. Fratini, A. Girella, I. Saldan,
C. Milanese, O. Dobrovetska, L. Sus, Ye. Okhremchuk, O. Kuntyi, O. Reshetnyak // Materials Letters. –
2015. – Vol. 161. – P. 263–266.