| 摘要 |
A method for manufacturing nanometer scale crystal titanium dioxide photo-catalyst sol-gel is disclosed. Titanium compound is dissolved and diluted in a predetermined acid liquid to form titanium diluted solution, and the pH value is adjusted to be between 7.0 to 9.0. Then titanium hydroxide in the solution is filtered so as to get filter cake and then it is cleaned. Then oxidant and inorganic acid is added to form titanium dioxide sol-gel solution under predetermined conditions. The titanium dioxide sol-gel solution can be transparent or yellow color depending on operation conditions. The content of photo-catalyst is between 0.5 to 10%.
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