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The effects of copper ions on the catalytic degradation of azo dye acid chrome dark blue

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Abstract

The effect of Cu2+ on the catalytic degradation of Acid chrome dark blue (ACDB) in UV-TiO2 process and Fenton process was studied. In these two processes, Cu2+ markedly inhibited the degradation of ACDB. These inhibition effects had an obvious relationship with the concentration of Cu2+. The experimental results indicated that in pH 5.0 buffer solution, ACDB reacted with Cu2+ with the formation of new complex Cu(ACDB)2. This interaction was favorable to protect some groups in ACDB from the oxidation of reactive oxygen species generated in UV-TiO2 process and Fenton process, and consequently had suppressing effects on degradation of ACDB.

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Authors and Affiliations

  1. College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China

    J. W. Fan, X. H. Liu, Y. N. Huang & L. T. Pan

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  1. J. W. Fan
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  2. X. H. Liu
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  3. Y. N. Huang
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  4. L. T. Pan
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Correspondence to L. T. Pan.

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Fan, J.W., Liu, X.H., Huang, Y.N. et al. The effects of copper ions on the catalytic degradation of azo dye acid chrome dark blue. JICS 7, 134–141 (2010). https://doi.org/10.1007/BF03245870

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  • DOI: https://doi.org/10.1007/BF03245870

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