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Phenol water typical biodegradable pollutants . In this paper, evaporation - induction - self-assembly method , preparation of CdS / mesoporous Ti02 and morphology , polymorph characterization investigated Photocatalytic Degradation under different preparation conditions and reaction conditions . CdS / mesoporous Ti02 catalyst based on the traditional hydrothermal method , preparation of CdS / ZnS / mesoporous Ti02, investigated the activity and life of the catalyst and its influencing factors , and to study the Pt2 the doping modification effect . The main contents and conclusions are as follows : 1 , made ??of CdS / mesoporous Ti02 particles cylindrical and spherical , structural integrity , clean surface , uniform particle size of CdS incorporation inhibition Ti02 changes in the structure of anatase to rutile structure , and referral the particle size of the hole Ti02 significantly reduced. CdS / mesoporous Ti02 photocatalytic degradation efficiency of phenol than CdS / Ti02 significantly improve . 50ppm phenol degradation rate , the molar ratio of 0.03 of CdS / mesoporous Ti02 CdS / Ti02 increase of 13.3 % , the molar ratio of 0.015 of CdS / mesoporous Ti02 than 0.015 of CdS / ordinary Ti02 increased 13.7% . Light intensity , CDS content, initial concentration of phenol , the calcination temperature , ultrasonic treatment , different templating agents have different degrees of influence on the catalyst performance , this experiment more appropriate for the preparation conditions and the reaction conditions to 200W light N ( CdS ) : N ( Ti02) = 0.03,400 ° C calcination , ultrasonic treatment , the high molecular block copolymer as a template. Obtained CdS / ZnS / mesoporous Ti02 rutile composition ratio increased, cylindrical and spherical particles , structural integrity , uniform particle size , the surface of the microspheres is rough , there are a lot of small particles attached . The light corrosion analysis shows CdS / mesoporous Ti02 , CdS / ZnS / mesoporous Ti02 corrosion degree below the passivation layer of ZnS can play a role , the surface radiation restructuring location can be passivated to reduce excitation defects , effectively blocking the broken kernel Cd2 ion dissociation , inhibition of light corrosion carried out , the catalyst life is extended accordingly , significantly improve the degradation efficiency of phenol molar ratio of 0.015 and 0.06 CdS / ZnS / mesoporous Ti02 than the corresponding concentration of CdS / mesoporous Ti02 significantly improve the efficiency of degradation of phenol , an increase of 12% and 7% , respectively . More appropriate in this experiment the ratio of ZnS, CdS between 1-1.5 . Doping Pt2, Pd2 significantly improve the photocatalytic activity , 0.5 % OF Pd2 doped , and 0.5% Pt2 doping were increased by 11 % and 19% , the proportion of both optimum doping in the 0.5-0.75wt.% .
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