Titanium catalysts, photodegradation

Titanium dioxide and titanium incorporated into aiumino-siiicate photocataiysts have been studied for the photodegradation of dichioromethane into carbon dioxide and HCi. Different forms of titanium dioxide have been produced such as rutiie and anatase as weii as an amorphous form. Titanium piiiared ciays have been found to be more active than titanium ciays. Carbon feit was aiso used as a support for titanium species and this materiai is the most active we have studied. By enriching solutions of dichloromethane with oxygen or by pre-irradiating the titanium catalyst, faster rates of reaction and larger conversions are obtained. 

Kondo, M.M. and Jardim, F., Photodegradation of chloroform and urea using Ag-loaded titanium dioxide as catalyst, Water Res., 25, 823-827, 1991. 

The photodegradation of hexabromocyclododecane in aqueous solution has been obtained by Fe -oxalate and Fe -citrate complexes, in the presence of H2O2 and simulated sunlight. " Fe-g-C3N4 (Fe-CN) and titanium silicate zeolite (TS-1) hybrid materials have been produced from dicyandiamide, metal chloride as precursors and TS-1 as a support. The material has been applied as heterogeneous catalyst for the photo-catalytic selective oxidation of benzene to phenol, in the presence of H2O2 as benign oxidant under ambient conditions. Noticeably, the hybrid... 

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