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TiO2 Nanotubes on Transparent Substrates: Control of Film Microstructure and Photoelectrochemical Water Splitting Performance
- Source :
- Catalysts, Vol 8, Iss 1, p 25 (2018), Catalysts; Volume 8; Issue 1; Pages: 25
- Publication Year :
- 2018
-
Abstract
- Transfer of semiconductor thin films on transparent and or flexible substrates is a highly desirable process to enable photonic, catalytic, and sensing technologies. A promising approach to fabricate nanostructured TiO2 films on transparent substrates is self-ordering by anodizing of thin metal films on fluorine-doped tin oxide (FTO). Here, we report pulsed direct current (DC) magnetron sputtering for the deposition of titanium thin films on conductive glass substrates at temperatures ranging from room temperature to 450 °C. We describe in detail the influence that deposition temperature has on mechanical, adhesion and microstructural properties of titanium film, as well as on the corresponding TiO2 nanotube array obtained after anodization and annealing. Finally, we measure the photoelectrochemical water splitting activity of different TiO2 nanotube samples showing that the film deposited at 150 °C has much higher activity correlating well with the lower crystallite size and the higher degree of self-organization observed in comparison with the nanotubes obtained at different temperatures. Importantly, the film showing higher water splitting activity does not have the best adhesion on glass substrate, highlighting an important trade-off for future optimization.
- Subjects :
- anodization
Materials science
Annealing (metallurgy)
Technische Fakultät
Photoelectrochemistry
chemistry.chemical_element
02 engineering and technology
lcsh:Chemical technology
010402 general chemistry
01 natural sciences
titanium
TiO2 nanotubes
hardness
adhesion
photoelectrochemistry
Catalysis
lcsh:Chemistry
lcsh:TP1-1185
Physical and Theoretical Chemistry
Thin film
Anodizing
Sputter deposition
021001 nanoscience & nanotechnology
Tin oxide
0104 chemical sciences
lcsh:QD1-999
chemistry
Chemical engineering
Water splitting
0210 nano-technology
ddc:600
Titanium
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Catalysts, Vol 8, Iss 1, p 25 (2018), Catalysts; Volume 8; Issue 1; Pages: 25
- Accession number :
- edsair.doi.dedup.....ba6d5be2a3c35e58af32a781a04cebf3