Tuning of Titanium Oxide Morphology at Micro and Nano Scale by Alternating Current Anodising

Maria Vittoria Diamanti; Marco Ormellese; Maria Pia Pedeferri

doi:10.4028/www.scientific.net/JNanoR.6.61

Paper Titles

Nanoscaled C, Ni, Pt Thin Films
p.29

Investigation of Interrelation between Particle Size and Phase Transition in the Al₂O₃-ZrO₂ System
p.35

On the Nanostructure of Cu in Ti_xCu_1-x and TiN/Cu Films: A XAFS Study
p.43

Fabrication of Copper-Alumina Nanocomposites by Mechanochemical Routes
p.51

Tuning of Titanium Oxide Morphology at Micro and Nano Scale by Alternating Current Anodising
p.61

Fabrication of Nanowires from Gold Nanoparticles by AC Dielectrophoresis and Ink-Jet Delivery
p.67

Precursor to High Purity Carbon Nanotubes: A Step by Step Evaluation of Carbon Yield
p.75

Amorphous/Nanocrystalline Films Prepared by Magnetron Sputtering with Additional External Magnetic Field
p.89

Biological Properties of Ti-Si-C-O-N Thin Films
p.99

HomeJournal of Nano ResearchJournal of Nano Research Vol. 6Tuning of Titanium Oxide Morphology at Micro and...

Tuning of Titanium Oxide Morphology at Micro and Nano Scale by Alternating Current Anodising

Abstract:

High surface area TiO2 layers are particularly attractive for photocatalytic applications; suitable anodising processes can be used to produce the oxides and to tune their morphology and structure. In the presented research, an alternative technique to enhance the surface area of anodic oxides was identified. This was achieved with the implementation of an anodising treatment performed by supplying alternating current in diluted hydrochloric acid (feeding voltage ranging from 5 V to 10 V). Alternating current anodising caused the formation of a double texture of pits on the oxide surface, the bigger ones being some micrometres wide and formed by smaller pits hundreds of nanometres large; these holes distribution and dimensions can be modulated by varying electrolyte concentration, feeding voltage and anodising time.