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Effect of oxygen and hydrogen peroxi de on TiO_2 photo catalytic

ZHANG Qing-qing,TANG Bin,WANG Jin,WU Jun (Dept.of Bioch.Engn.,Anhui Univers ity of Mechanical and Electrical Engineering,WuHu 241000,China)  
Previous work has show that TiO2 photo catalysis can destroy methyl o range dye in aqueous solution.The paper deals wi th how to enhance the photo catalytic degradation of methyl orange dye after the addition of hydr ogen peroxide and air to the system,i n which TiO2 +UV,TiO2+H2O2+UV,H2O2+UV,TiO2+UV +air etc.were used.Experiments have shown that the TiO2+H2O2+UV system can enhance the reaction r ate by six times,while TiO2+UV +air system can enhance reaction by more than rate three times.
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