Optical Properties of Cerium (IV) based compounds

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Optical Properties of Cerium (IV) based compounds

Author Affiliations

¹Department of Chemistry, FMN College, Kerala, INDIA
²Department of Chemistry, DB College Sasthamcotta, Kerala, INDIA

Res.J.chem.sci., Volume 4, Issue (5), Pages 29-31, May,18 (2014)

Abstract

Cerium(IV) based samples namely cerium phosphate (CP), cerium molybdate (CM) and cerium phosphomolybdate (CPM) in the present study were obtained as yellow solids. They show maximum absorption in the ultra-violet region. Ligand to metal double-charge transfer transitions, are responsible for the bright colours of the materials. The absoption edge around 250nm for the samples is an indication of the presence of band gap in the materials. The study reveals that the band gap of the materials can be tuned by incorporating different anions. The band gap energy of the synthesized samples obtained were in the range 1.2 – 3.5 eV.

References

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Han Gao , Bing Qiao , Ting-Jie Wang *, Dezheng Wang , and Yong Jin, Cerium Oxide Coating of Titanium Dioxide Pigment to Decrease Its Photocatalytic Activity, Ind. Eng. Chem. Res.,53(1), 189–197 (2014)

[ref1] Paul A., Mullholland M. and Zaman M.S., J. Mater. Sci.11, 2082-2086 (1976)

[ref2] Eiichiro Nakazawa and Fuminori Shiga, Jpn. J. Appl. Phys.,42, 1642-1647 (2003)

[ref3] Ghoneim D., Marzouk K. H., EL-Sayed S. N., Mohsen N. A. and Mahmoud A.M.A., Chalcogenide letters, 307-316 (2010)

[ref4] Naik S.J., Uma Subramanian, Tangsali R.B. and Salker A.V., J. Phys. D : Appl. Phys.,44, 115404 (2011)

[ref5] Smith Jared Peters, Ph.D. Thesis, Humboldt-University, Berlin, Germany (2006)

[ref6] Zallen R. and Moret M.P., Solid State Commun., 137, 154-157 (2006)

[ref7] Madelung Otfried, Semiconductors - Basic Data (2nd Rev. Ed.), Springer-Verlag, (1996)

[ref8] Jorgenson C.K. (Ed.), Absorption Spectra and Chemical Bonding in Complexes, Pergamon, Oxford, (1972)

[ref9] Kiyoshi Takahashi, Akihiko Yoshikawa and Adarsh Sandhu (Eds.), Wide band gap semiconductors: Fundamental properties and modern photonic and electronic devices, Springer, Berlin Heidelberg, New York, (2007)

[ref10] Masui T., Tategaki H., Furukawa S. and Imanaka N., Syntheis and characterization of new environmentally friendly pigments based on cerium phosphate, J. Ceram. Soc. Jpn.,112, 646 (2004)

[ref11] Shinya Furukawa, Toshiyuki Masui and Nobuhito Imanaka, 418, 255-258 (2006)

[ref12] Jean Noel Berte, Cerium Pigments In: High Performance Pigments, Mugh M. Smith (Ed.), Wiley-VCH Verlag GmbH and Co. KGaA, (2002)

[ref13] Han Gao , Bing Qiao , Ting-Jie Wang *, Dezheng Wang , and Yong Jin, Cerium Oxide Coating of Titanium Dioxide Pigment to Decrease Its Photocatalytic Activity, Ind. Eng. Chem. Res.,53(1), 189–197 (2014)