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Abstract
Differences between photoelectrochemical and electrochemical activity were thoroughly investigated for the oxygen evolution reaction mediated by Ag2S deposited on two types of ordered titania substrates. Titanium dioxide nanotubes were fabricated by anodization of magnetron sputtered Ti films on ITO-coated glass substrates or directly from Ti foil. Further, Ag2S deposition on the nanotubes was carried out using successive ionic layer adsorption and reaction, known as SILAR, with 5, 25, and 45 cycles performed. Two types of nanotubes, one on transparent the other on non-transparent substrates were compared regarding their geometry, structure, optical, and electrochemical properties. It was demonstrated that the composite of Ag2S grown on transparent nanotubes exhibits higher catalytic activity compared to Ag2S grown on the nanotubes formed on Ti foil. The results showed that transparent nanotubes after modification with Ag2S by 25 SILAR cycles exhibit ca. 3 times higher photocurrent under visible light illumination than non-transparent ones treated with the same number of cycles. Furthermore, transparent nanotubes after 45 SILAR cycles of Ag2S exhibit enhanced activity towards oxygen evolution reaction with 9.3 mA cm−2 at 1.1 V vs. Ag/AgCl/0.1 M KCl which is six times higher than titania alone on Ti foil.
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Authors (10)
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Wiktoria Lipińska
- Centre for Plasma and Laser Engineering, Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 Street, 80-231 Gdańsk, Poland
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Katharina Dehm
- Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
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Simon Hager
- Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
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Justyna Gumieniak
- The Faculty of Mechanics and Technology, Rzeszów University of Technology, Kwiatkowskiego 4 Street, 37-450 Stalowa Wola, Poland
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Agnieszka Kramek
- The Faculty of Mechanics and Technology, Rzeszów University of Technology, Kwiatkowskiego 4 Street, 37-450 Stalowa Wola, Poland
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Ryan Crisp
- Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 3, 91058 Erlangen, Germany
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Emerson Coy
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3 St., 61-614 Poznań, Poland
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Katarzyna Grochowska
- Centre for Plasma and Laser Engineering, Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 Street, 80-231 Gdańsk, Poland
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Katarzyna Siuzdak dr hab. inż.
- Centre for Plasma and Laser Engineering, Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 Street, 80-231 Gdańsk, Poland
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
NANOSCALE
no. 16,
pages 15265 - 15279,
ISSN: 2040-3364 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Lipińska W., Wolff S., Dehm K., Hager S., Gumieniak J., Kramek A., Crisp R., Coy E., Grochowska K., Siuzdak K.: Transparent TiO2 nanotubes supporting silver sulfide for photoelectrochemical water splitting// NANOSCALE -Vol. 16,iss. 32 (2024), s.15265-15279
- DOI:
- Digital Object Identifier (open in new tab) 10.1039/d4nr01440e
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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