Publications Repository - Gdańsk University of Technology

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

Authors

• mgr inż. Mariusz Wtulich link open in new tab ,
• dr inż. Mariusz Szkoda link open in new tab ,
• dr inż. Grzegorz Gajowiec link open in new tab ,
• prof. dr hab. inż. Maria Gazda link open in new tab ,
• dr inż. Kacper Jurak link open in new tab ,
• dr hab. inż. Mirosław Sawczak,
• prof. dr hab. Anna Lisowska-Oleksiak link open in new tab