UV-Light Absorption and Photocatalytic Properties of Zn-Doped CeO2 Nanopowders Prepared by Ultrasound Irradiation

Aula Fitra Efendi; Iis Nurhasanah

doi:10.4028/www.scientific.net/MSF.827.56

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HomeMaterials Science ForumMaterials Science Forum Vol. 827UV-Light Absorption and Photocatalytic Properties...

UV-Light Absorption and Photocatalytic Properties of Zn-Doped CeO₂ Nanopowders Prepared by Ultrasound Irradiation

Abstract:

Ceria (CeO₂) nanopowders doped with various Zinc (Zn) compositions were synthesized from solution by irradiating ultrasound waves. Ultrasound waves were irradiated to aqueous/isopropanol solution of cerium nitrate and zinc nitrate mixtures. Aqueous solution of ammonium hydroxide was droped into that solution until pH becomes 10. Dried precipitates were calcinated at 100°C to form CeO₂ nanopowders. X-ray Diffraction (XRD) analysis shows the CeO₂ nanopowder possess fluorite cubic structure. Ultrasound irradiation resulted in nanometric powder of CeO₂ with spherical in shape. The addition of Zn into CeO₂ reduces the particle size and shows strong absorbance in the ultra–violet (UV) region. Moreover, the addition of 20 mol% Zn is inhibiting photocatalytic activity of CeO₂ under sunlight irradiation. These results suggest that Zn-doped CeO₂is more promising for UV radiation protection with no presence photocatalytic activity.

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Materials Science Forum (Volume 827)

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56-61

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https://doi.org/10.4028/www.scientific.net/MSF.827.56

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Online since:

August 2015

Authors:

Aula Fitra Efendi*, Iis Nurhasanah

Keywords:

Ceria (CeO₂), Nanostructure, Optical Property, Ultrasound irradiation

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