钙钛矿CaFeO_3光催化降解大红染料废水性能的研究

用柠檬酸络合法制备钙钛矿型复合氧化物CaFeO3,并以其为光催化剂对水溶性染料进行光催化降解实验。讨论了光催化反应时间、催化剂投加量、光照强度、pH值、以及外加氧化剂(H2O2)等因素对光催化活性的影响。实验结果表明:在催化剂投加量0.4g,降解时间180min,pH值2,光照强度200W,H2O2的投加量5mL时,大红染料的降解率可达99.83%。

Study on Photocatalytic Degradation of Dyes by Perovskite-Type CaFeO3

Perovskite-type complex oxide CaFeO3 is prepared by citrate complexometry.It is used in catalytic degradation of water soluble dye as catalyst.We researched the influence factors on the photo catalysis activity,such as the reaction time,the quantity of the catalyst,the strength of the illumination,the pH value,the amount of the additional oxidant（H2O2） and so on.The results showed that the degradation rate of the dye may reach 99.47% when the quantity of the catalyst is 0.4g,the reaction time is 180min,the pH value is 2,the strength of the illumination is 200W and the amount of H2O2 is 5mL.