I'm working on superhydropobic coating with titanium sol-gel. I use titanium isopropoxide, ethanol, distilled water and HCI. After dip coating, I put glass to in desiccator and dried 50 C for 1 hour. After drying, there were flake-like structures on the surface of the glass and not transparent. How can I fix this problem?
Dear Atakan Barkınay, I think you didn't finished the experimental procedure. The following statment is taken from the reference below. My Regards
'.... The TiO2 was prepared from a titanium butoxide (Ti(OC4H9)4 and isobutanol (C4H9OH) precursor solution with dip coating at 50 °C, air drying, and then hydrothermal treatment at 120 °C for 7 h in water or steam to achieve coating densification. '
Ref.
https://doi.org/10.1016/B978-1-78242-303-4.00006-5
Dear Atakan Barkınay
It seems to me that you looking for transparent TiO2 coating as you mentioned in your question. In this case, what you got after the drying step was dry amorphous TiO2 coating and with calcinations by heating to temperature between 400 to 500ºC (450°C is the most appropriate) for less than one hour in air, you will get coating of a high integrity, dense, adherent ,full crystalline and transparent anatase type TiO2 .
Best regards
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering
- Coating