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- W2393026410 abstract "CeO2-TiO2/attapulgite(ATP)nanocomposites were prepared by the sol-gel method using ATP as support,cerium nitrate hexahydrate and tetrabutyl titanate as raw materials,glacial acetic acid as complexing agent.The microstructures of the as-prepared composites were characterized by thermogravimetric-differential scanning caloricity(TG-DSC)analysis,transmission electron microscopy(TEM),X-ray diffraction(XRD),and nitrogen adsorption-desorption measurements.The effects of Ce/Ti molar ratio on catalytic properties of the as-prepared composites for decomposing Rhodamine B solutions were investigated.The results indicated that when Ce/Ti was more than or equal to 5/5,CeO2-TiO2 solid solution oxide particles with cubic fluorite structure were uniformly coated on the surface of ATP with particle size of 5—10 nm.With the increase of Ti4+ content,CeO2 nanoparticles tended to form a defective crystalline phase and existed as amorphous phase.When Ce/Ti was less than 3/7,a separated anatase TiO2 was observed in the composites.A suitable amount of Ti4+ doping could promote the formation of structure defects,which contributed to increasing the content of oxygen vacancies and improving the catalytic activity.The catalytic efficiency of CeO2-TiO2/ATP(Ce/Ti=5/5)nanocomposite on Rhodamine B solution was higher than that of others,and the removal rate of chemical oxygen demand(COD)could reach over 96%." @default.
- W2393026410 created "2016-06-24" @default.
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- W2393026410 date "2013-01-01" @default.
- W2393026410 modified "2023-09-23" @default.
- W2393026410 title "Catalytic properties of CeO_2-TiO_2/attapulgite nanocomposites prepared by sol-gel method" @default.
- W2393026410 hasPublicationYear "2013" @default.
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