Abstract
Cerium oxide (CeO 2) coated on copper modified attapulgite clay nanocomoposite (CeO 2/Cu 2+-ATP) was prepared by homogeneous deposition method. The microstructures of the as-prepared CeO 2/Cu 2+-ATP nanocomposites were characterized by X-ray diffraction (XRD), energy-dispersive spectrometer (EDS) and transmission electron microscopy (TEM). The results indicated that CeO 2 particles with average size of about 5 nm were loaded onto the Cu 2+-ATP and were widely dispersed. Comparing the catalytic activity of ATP/CeO 2 and CeO 2/Cu 2+-ATP, the catalytic activity was improved when a small quantity of Cu 2+ was introduced. The loading amount of CeO 2 and reaction temperature had important effects on decolorization ratio of methyl orange (MO). When the loading amount and reaction temperature were 70% and 338 K, respectively, the decolorization ratio of MO reached over 99%, which showed excellent catalytic activity.
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