Add time:08/07/2019         Source:sciencedirect.com

CuFe2O4 particles were obtained by sol-gel process and characterized by XRD, SEM and EDS. The effects of tartaric acid (TA) on the degradation of methylene blue (MB) were studied in the presence of CuFe2O4 and H2O2 under light irradiation. The results showed that introducing TA enhanced MB decolorization rate from 52.0% to 92.1% within 80 min. The contribution of superoxide anions (O2−) was only 10% and the contribution of hydroxyl radical (OH) was around 88%. For H2O2-CuFe2O4-photo system, in the presence (or absence) of TA, the dynamic change of OH suggested that the addition of TA could promote the generation of hydroxyl radicals. The enhanced effect of TA in TA-H2O2-CuFe2O4-photo system could be attributed to its own structure and the dissolved metal ions of the catalyst surface. In addition, a reasonable mechanism for the complex system was elucidated.

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