Characterization of titania self-aligned nanotubes prepared under various conditions for the photoelectrochemical water splitting

• DOI: 10.1007/s44373-024-00007-5
• Publication Date: 2024-10-07T09:01:59Z
• Authors: Lucas N. Mendioroz; Victoria A. Gómez...; P. Cecilia dos Sa...; M. Dolores Perez; Federico A. Viva
• Keywords: Characterization; Photoelectrochemistry

TiO2 nanotubes were grown by anodization of Ti sheets in an ethylene glycol solution. The then prepared tested with and without heat treatment at 450 ºC, for the water splitting process. produced increased photocurrent from 4.9 µA cm−2 to 56.8 under illumination 0.7 V vs. SHE. Modification was carried out electroreduction on both treated untreated samples its photoactivity evaluated. spectral response showed reduced material (black titania), although no appreciable change detected absorbed spectra visible wavelengths. Finally, high-purity (> 99.6%) commercially pure (99%) used grow clear difference photocurrents (61.5 65.4 while illuminated SHE) showing potential cheap commercialization.