Abstract: In this paper，composite oxides of copper ferrite were prepared by combustion with ascorbic acid as a new combustion agent. The effect of the molar ratio of ferric nitrate and copper nitrate on composites was investigated by XRD. The composite was characterized by scanning electron microscopy，BET and UV spectra. The photo-catalytic properties of composites were studied with rhodamine B as degradation aim. Effect of catalyst amount，solution pH，hydrogen peroxide amount，the composite type on photo-catalyst were studied. The results indicated that the best photo-catalytic effect was achieved under UV light when the dose of catalyst is 0.4g/L，pH is 9，the amount of hydrogen peroxide is 5mL/L，the CuFe2O4 composite with the molar ratio of ferric nitrate，copper nitrate and ascorbic acid is 2∶3∶1，and the composite is also a better decolorizing agent.

Key words: copper ferrite, photo-catalysis, combustion

摘要： 采用一种新型燃烧剂抗坏血酸，燃烧法快速制备铁酸铜的复合氧化物。经XRD考察硝酸铁和硝酸铜摩尔比对复合氧化物的影响，采用电镜、BET、紫外光对复合氧化物进行表征。以罗丹明B为目标降解物对铁酸铜复合氧化物进行光催化研究，考察了催化剂用量、溶液酸度、双氧水用量、复合氧化物类型对光催化效果的影响。结果表明，复合氧化物最佳光催化条件为催化剂加入量为0.4g/L，pH值为9，双氧水的用量为5mL/L，硝酸铜、硝酸铁和抗坏血酸摩尔比为2∶3∶1；铁酸铜复合氧化物在紫外光下光催化效果最佳，同时复合氧化物也是较好的脱色剂。

关键词: 铁酸铜, 光催化, 燃烧法