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.
Authors
- Wiktoria Lipińska,
- Katarzyna Grochowska,
- dr hab. inż. Jakub Karczewski link open in new tab ,
- Emerson Coy,
- dr hab. inż. Katarzyna Siuzdak
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1007/s10853-022-07471-7
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2022
