Degradation of Chloroform Using TiO2 Photocatalyst, II

Photocatalytic reaction of TiO2 powder was applied to decomposition of chloroform in water. Reaction activity of mixtures （rutile form TiO2 ＋ anatase form TiO2）was examined. Pure anatase was most active while pure rutile was totally nonactive. Pure rutile reduced the activity of anatase when added, either through electronic interactions or by hindering light absorption. Impure active rutile increased the activity of antase probably by scattering. incoming light