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Abstract
Doping and modification of TiO2 nanotubes were carried out using the hydrothermal method. The introduction of small amounts of cobalt (0.1 at %) into the structure of anatase caused an increase in the absorption of light in the visible spectrum, changes in the position of the flat band potential, a decrease in the threshold potential of water oxidation in the dark, and a significant increase in the anode photocurrent. The material was characterized by the SEM, EDX, and XRD methods, Raman spectroscopy, XPS, and UV-Vis reflectance measurements. Electrochemical measurement was used along with a number of electrochemical methods: chronoamperometry, electrochemical impedance spectroscopy, cyclic voltammetry, and linear sweep voltammetry in dark conditions and under solar light illumination. Improved photoelectrocatalytic activity of cobalt-doped TiO2 nanotubes is achieved mainly due to its regular nanostructure and real surface area increase, as well as improved visible light absorption for an appropriate dopant concentration
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Authors (7)
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Mirosław Sawczak dr hab. inż.
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Materials
no. 14,
ISSN: 1996-1944 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Wtulich M., Szkoda M., Gajowiec G., Gazda M., Jurak K., Sawczak M., Lisowska-Oleksiak A.: Hydrothermal Cobalt Doping of Titanium Dioxide Nanotubes towards Photoanode Activity Enhancement// Materials -Vol. 14,iss. 6 (2021), s.1507-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ma14061507
- Verified by:
- Gdańsk University of Technology
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