I'm trying to prepare TiO2 nanotubes by anodizing Ti metal.
Electrolye is 0.5 M H2SO4 and 0.5% HF and cathode is SUS.
Anodization for TiO2 nanotube synthesis usually takes about 2 h.
And it is annealed at 450 oC for 1 h in air.
Nanotube arrays are formed but sometimes not...
What are the problems?
Could you show me the photos of TiO2 nanotube (taken by phone camera..) before and after thermal annealing because I want to see colors ...?
Thank you.
Saurav Sorcar
You can try another synthetic method which uses Ethylene glycol as eletrolyte, NH4F, and around 2 volume percent DI water. There are many papers on this method. You will get reproducible results.
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