Methanol oxidation on Ru/Pd(poly) in alkaline solution

Štrbac, Svetlana; Maksic, A.; Rakočević, Zlatko Lj.

doi:10.1016/j.jelechem.2018.06.011

2018

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Authors

Štrbac, Svetlana

Maksic, A.
Rakočević, Zlatko Lj.

Article (Accepted Version)

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Abstract

Polycrystalline Pd electrode, Pd(poly), is modified by Ru nanoislands using spontaneous deposition method. Coverage of Pd(poly) electrode with the deposited Ru are approx. 20, 30 and 50% as estimated from phase atomic force microscopy images. The oxidation state of Pd substrate and the deposited Ru is determined by X-ray spectroscopy (XPS). Electrocatalytic activity of obtained Ru/Pd(poly) bimetallic electrodes is tested towards methanol oxidation in alkaline medium. Cyclic voltammetry and chronoamperometry experiments show the enhanced activity of Ru/Pd(poly) electrodes towards methanol electrooxidation with respect to bare Pd(poly). This is explained by the presence of Ru islands, which provided RuOH and Pd-RuOH sites, necessary for the oxidation of CO as the main intermediate during the oxidation of methanol at lower potentials. 30% Ru/Pd(poly) is the most active of all examined electrodes.

Keywords:

Ruthenium / Palladium / Spontaneous deposition / Methanol oxidation

Source:
Journal of Electroanalytical Chemistry, 2018, 823, 161-170

Publisher:

Elsevier

Projects:

Functional, Functionalized and Advanced Nanomaterials (RS-45005)

Note:

This is the peer-reviewed version of the article: S. Štrbac, A. Maksić, Z. Rakočević, Methanol oxidation on Ru/Pd(poly) in alkaline solution, Journal of Electroanalytical Chemistry, 2018, 823, 161-170, doi: https://doi.org/10.1016/j.jelechem.2018.06.011
The published version: https://cer.ihtm.bg.ac.rs/handle/123456789/2460

DOI: 10.1016/j.jelechem.2018.06.011

ISSN: 1572-6657

WoS: 000443664700021

Scopus: 2-s2.0-85048082915

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	12

TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Maksic, A.
AU  - Rakočević, Zlatko Lj.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4275
AB  - Polycrystalline Pd electrode, Pd(poly), is modified by Ru nanoislands using spontaneous deposition method. Coverage of Pd(poly) electrode with the deposited Ru are approx. 20, 30 and 50% as estimated from phase atomic force microscopy images. The oxidation state of Pd substrate and the deposited Ru is determined by X-ray spectroscopy (XPS). Electrocatalytic activity of obtained Ru/Pd(poly) bimetallic electrodes is tested towards methanol oxidation in alkaline medium. Cyclic voltammetry and chronoamperometry experiments show the enhanced activity of Ru/Pd(poly) electrodes towards methanol electrooxidation with respect to bare Pd(poly). This is explained by the presence of Ru islands, which provided RuOH and Pd-RuOH sites, necessary for the oxidation of CO as the main intermediate during the oxidation of methanol at lower potentials. 30% Ru/Pd(poly) is the most active of all examined electrodes.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Methanol oxidation on Ru/Pd(poly) in alkaline solution
VL  - 823
SP  - 161
EP  - 170
DO  - 10.1016/j.jelechem.2018.06.011
ER  -

@article{
author = "Štrbac, Svetlana and Maksic, A. and Rakočević, Zlatko Lj.",
year = "2018",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4275",
abstract = "Polycrystalline Pd electrode, Pd(poly), is modified by Ru nanoislands using spontaneous deposition method. Coverage of Pd(poly) electrode with the deposited Ru are approx. 20, 30 and 50% as estimated from phase atomic force microscopy images. The oxidation state of Pd substrate and the deposited Ru is determined by X-ray spectroscopy (XPS). Electrocatalytic activity of obtained Ru/Pd(poly) bimetallic electrodes is tested towards methanol oxidation in alkaline medium. Cyclic voltammetry and chronoamperometry experiments show the enhanced activity of Ru/Pd(poly) electrodes towards methanol electrooxidation with respect to bare Pd(poly). This is explained by the presence of Ru islands, which provided RuOH and Pd-RuOH sites, necessary for the oxidation of CO as the main intermediate during the oxidation of methanol at lower potentials. 30% Ru/Pd(poly) is the most active of all examined electrodes.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Methanol oxidation on Ru/Pd(poly) in alkaline solution",
volume = "823",
pages = "161-170",
doi = "10.1016/j.jelechem.2018.06.011"
}

Štrbac, S., Maksic, A.,& Rakočević, Z. Lj. (2018). Methanol oxidation on Ru/Pd(poly) in alkaline solution.
Journal of Electroanalytical Chemistry
Elsevier., 823, 161-170.
https://doi.org/10.1016/j.jelechem.2018.06.011

Štrbac S, Maksic A, Rakočević ZL. Methanol oxidation on Ru/Pd(poly) in alkaline solution. Journal of Electroanalytical Chemistry. 2018;823:161-170

Štrbac Svetlana, Maksic A., Rakočević Zlatko Lj., "Methanol oxidation on Ru/Pd(poly) in alkaline solution" Journal of Electroanalytical Chemistry, 823 (2018):161-170,
https://doi.org/10.1016/j.jelechem.2018.06.011 .