Photocatalytic activity of titanium dioxide in the degradation of methylene blue and tetrachlorofluoresceinin aqueous solutions

摘要

It was shown that the rate of the phototransformations of methylene blue and tetrachlorofluorescein at titanium dioxide is determined by the crystal structure and specific surface area of the titanium dioxide.Rutile has the highest specific photoactivity.In spite of the difference in the mechanisms bothreactions have common limiting stages,as shown by correlation of the respective specific rate constants.