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

acc_j.jelechem.2018.06.011.pdf (7.755Mb)

Authors

Štrbac, Svetlana

Maksic, A.
Rakočević, Zlatko Lj.

Article (Accepted Version)

Metadata

Show full item record

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

[ Google Scholar ]



	13
	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 ZL. Methanol oxidation on Ru/Pd(poly) in alkaline solution. Journal of Electroanalytical Chemistry. 2018;823:161-170

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

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