微波协同CuFeO_2类Fenton反应降解橙黄G的研究

Degradation of Orange G by Microwave Coupled with Fenton-like Reaction Using CuFeO_2 as Catalysis

以水热法制备得到的CuFeO_2为催化剂,通过微波协同类Fenton降解水中的偶氮染料橙黄G(OG),考察了不同参数对OG降解的影响、CuFeO_2的催化稳定性、反应体系的活化机理。结果表明:CuFeO_2具有高效稳定的催化活性和宽反应pH(3~9)适应范围;染料的降解速率随微波功率、H_2O_2浓度、催化剂量的增大而提高;体系中的·OH、·O_2^-、h^+(电子空穴)及Fe~Ⅳ=O均参与了OG的降解,其中以·OH为主。

Bimetallic Fe-Cu oxide （CuFeO2 ） was prepared using a hydrothermal method and used as catalysis in Fenton-like process coupled with microwave to degrade azo dye Orange G （OG）. The effects of various operation parameters and different reaction systems were tested. OG degradation indicated that CuFeO2/H2O2/MW can be conducted at a wide range of pH value （3 -9） and the degradation rate was increased with the rise of microwave power, initial H2 02 concentration and CuFeO2 dosage. The determine of the reactive oxygen species during the Fenton-like process indicated that ·OH,·O-, h＋（ electron hole） and FeIv =O were involved in OG oxidation which was dominated by ·OH.