International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

UV- Visible Diffuse Reflectance spectroscopic studies on Mn and Cu ion exchange of newly synthesized cerium zirconium antimonate and its application in dye degradation

Author Affiliations

  • 1Post Graduate and Research Department of Chemistry,Government College, Kasaragode, Kerala, INDIA
  • 2Post Graduate and Research Department of Chemistry, Sree Narayana College, Kannur-670 007, Kerala, INDIA

Res. J. Recent Sci., Volume 1, Issue (ISC-2011), Pages 85-92, (2012)

Abstract

A novel inorganic cation exchanger cerium zirconium antimonate (CZSb) was synthesized by co precipitation method. Zirconium substitution of cerium in the solid solution has proved to be beneficial in increasing the oxygen storage capability. Chemical composition of the compound was determined from EDS and structural studies were carried out using TGA, XRD and FTIR. UV-VIS Diffuse Reflectance spectroscopic studies were conducted to obtain information on surface coordination and different oxidation states of metal ions and to study their properties. The material synthesized showed very good cation exchange properties and the distribution studies showed that the selectivity towards various metal ions was in the order Pb2+ > Cu2+ > Mn2+ > Co2+ > Cd2+ > Y3+ > Ni2+ >Hg2+ > Zn2+ > Th3+ > Mg2+ . Its selectivity for lead helps the removal of it from other cations. Cu2+ ion exchange changes the color of the material from yellow to green and Mn2+ ion,s which get oxidized in the matrix of the material changes the color to dark brown /black. Thus the material can be used as an environment friendly solid indicator for the detection of trace amounts of Mn2+ ions in solution. The electron exchange property of cerium ions enable it to be used widely in various catalytic and functional systems. UV-Vis DR Spectroscopy was used for characterizing the synthesized material and its Mn and Cu ion exchanged forms. The decrease in rate of catalytic degradation of methyl orange dye with its Mn exchanged form is correlated with its UV VIS DR spectra.

References

  1. Amphlett C.B., Inorganic ion exchangers, Elsevier (1964)
  2. Janardanan C. and Nair S.M.K., Analyst, 115, 8587 (1990)
  3. Mu. Naushad, Inorganic and Composite Ion Exchange Materials and their Applications, Ion Exchange Letters, 2 1-14 (2009)
  4. Moller T., Selective crystalline inorganic materials as ion exchangers in the treatment of nuclear waste solutions, Academic Dissertation, University of Helsinki, Finland (2002)
  5. Weqar A.S. and Shakeel A.K., Synthesis, characterization and ion exchange properties of zirconium(IV) tungstoiodophosphate, a new cation exchanger, Bull. Mater, Sci., 30, 43-49 (2007)
  6. Telek G., Scoazec J.Y., Chariot J., Ducroc R., Feldmann G. and Roze C., Cerium-based histochemical demonstration of oxidative stress in taurocholate-induced acute pancreatitis in rats, A confocal laser scanning microscopic study, Journal of Histochemistry & Cytochemistry 47, 1201-1212 (1999)
  7. Trovarelli A., Catalysis by Ceria and Related Materials, London, Imperial College Press (2005)
  8. Dalslet B., Blennow P., Hendriksen P. V., Bonanos N., Lybye D. and Mogensen M., Assessment of doped ceria as electrolyte, Journal of Solid State Electrochemistry 10,547-561 (2006)
  9. Eguchi K., Ceramic materials containing rare earth oxides for solid oxide fuel cell, Journal of Alloys and Compounds 250, 486-491 (1997)
  10. Jasinski P., Suzuki T. and Anderson H. U., Nanocrystalline undoped ceria oxygen sensor. Sensors and Actuators B-Chemical, 95,73-77, (2003)
  11. Descorme C., Madier Y. and Duprez D., Infrared study of oxygen adsorption and activation on cerium-zirconium mixed oxides, Journal of Catalysis 196,167-173 (2000)
  12. Bamwenda G.R., Arakawa H., Cerium dioxide as a photocatalyst for water decomposition to O-2 in the presence of Ce-aq(4+) and Fe-aq(3+) species, Journal of Molecular Catalysis a-Chemical, 161, 105-113 (2000)
  13. Jong Dae Han and Seong Ihl Woo, Korean J. of Chem. Eng. 8(4), 235-239, (1991)
  14. Preetha B. and Janardanan C., Ion exchange method for the detection of trace amounts of Mn2+ using nano cerium zirconium phosphate cation exchanger, Ion Exchange Letters, 3 12-18, (2010)
  15. Suib S. L., Stud. Surf. Sci. Catal, 102, 47 (1996)