J. Iran. Chem. Soc., Vol. 7, No. 1 March 2010, pp.134~141.

Current location: JICS Archive > Vol. 7 > No. 1 > Articles : 14

The Effects of Copper Ions on the Catalytic Degradation of Azo Dye Acid Chrome Dark Blue

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

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

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.

Keywords: Copper ions, Acid chrome dark blue, Photocatalytical degradation, Fenton-process

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