| 摘要 |
PROBLEM TO BE SOLVED: To provide inexpensive titanium dioxide powder having excellent handleability, scarcely containing impurities and having a high photocatalyst activity. SOLUTION: This titanium dioxide powder for photocatalyst has an average aggregate particle diameter of 0.1-10μm, an average primary particle diameter of 10-1,000 nm, a BET specific surface area of 0.5-50 m<2> /g and a rutile type ratio of 10-100%. It is preferable that Fe, Al, Si, Na and Cl are contained in amounts of <=10 ppm, <=10 ppm, <=10 ppm, <=10 ppm and <=200 ppm, respectively, as impure components in the titanium dioxide powder.
|
