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Electrocatalytic oxidation of methanol, ethylene glycol and glycerine in alkaline media on TiO2 nanotubes decorated with AuCu nanoparticles for an application in fuel cells
Abstract
In this work, we present the catalytic and photocatalytic activity of AuCu nanostructures obtained on TiO2 nanotubes toward methanol, ethylene glycol and glycerine oxidation. The electrode material is prepared by anodization of Ti foil, thin AuCu layer sputtering and rapid thermal treatment under argon atmosphere. Scanning electron microscopy images confirmed the presence of ordered tubular architecture of TiO2 as well as nanoparticles formed on the surface of the nanotubes. The electrodes were measured using cyclic voltammetry, linear voltammetry and electrochemical impedance spectroscopy in dark and under illumination. Obtained results show a significant current increase: 20 and 90 times higher current density at ? 0.3 V versus Ag/AgCl/0.1 M KCl after glycol and glycerine addition, respectively. Moreover, a higher current toward alcohol oxidation was registered for thermally annealed samples than for nonannealed ones. Reported studies demonstrate deep insight into the electrical properties of AuCu-modified titania materials.
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Authors (5)
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Wiktoria Lipińska
- Instytut Maszyn Przepływowych PAN
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Katarzyna Grochowska
- Instytut Maszyn Przepływowych PAN
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Emerson Coy
- Instytut Maszyn Przepływowych PAN
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Katarzyna Siuzdak dr hab. inż.
- Uniwersytecie im. Adama Mickiewicza w Poznaniu
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
JOURNAL OF MATERIALS SCIENCE
no. 57,
pages 13345 - 13361,
ISSN: 0022-2461 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Lipińska W., Grochowska K., Karczewski J., Coy E., Siuzdak K.: Electrocatalytic oxidation of methanol, ethylene glycol and glycerine in alkaline media on TiO2 nanotubes decorated with AuCu nanoparticles for an application in fuel cells// JOURNAL OF MATERIALS SCIENCE -Vol. 57,iss. 28 (2022), s.13345-13361
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10853-022-07471-7
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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