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Khataee, Alireza,Darvishi Cheshmeh Soltani, Reza,Hanifehpour, Younes,Safarpour, Mahdie,Gholipour Ranjbar, Habib,Joo, Sang Woo American Chemical Society 2014 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH - Vol.53 No.5
<P>Dy-doped ZnO nanoparticles were synthesized with a sonochemical method. X-ray diffraction, inductively coupled plasma, Fourier transform infrared spectroscopy, UV–vis diffuse reflectance spectroscopy, and scanning electron microscopy analyses confirmed the successfully synthesis and nanometric diameter of the samples. Dy-doped ZnO nanoparticles were used for photocatalytic decolorization of C. I. Acid Red 17 solution under visible light irradiation. Among different amounts of dopant agent, 3% Dy-doped ZnO nanoparticles indicated the highest decolorization. Decolorization efficiency increased from 14.3 to 57.0% with an increase in catalyst dosage from 0.25 to 1 g/L, while further increment in the catalyst dosage up to 2 g/L caused an obvious decrease in decolorization efficiency. The addition of 0.1 mM peroxydisulfate (S<SUB>2</SUB>O<SUB>8</SUB><SUP>2–</SUP>) resulted in a decolorization efficiency of nearly 100% after irradiation for 180 min. The trend of inhibitory effect in the presence of different radical scavengers was Cl<SUP>–</SUP> > C<SUB>2</SUB>H<SUB>5</SUB>OH > HCO<SUB>3</SUB><SUP>–</SUP> > CO<SUB>3</SUB><SUP>2–</SUP>.</P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ie402743u'>ACS Electronic Supporting Info</A></P>