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

Ion exchange Characteristics of newly Synthesized Cerium Zirconium Phosphotungstate and its Analytical Applications

Author Affiliations

  • 1Department of Chemistry, University College, Thiruvananthapuram, Kerala, INDIA-695034
  • 2Department of Chemistry, Sree Narayana College, Thottada P.O., Kannur, Kerala, INDIA-670 007

Res.J.chem.sci., Volume 4, Issue (7), Pages 43-51, July,18 (2014)

Abstract

Growing environmental problems have necessitated the selective determination and removal of heavy metal ions, for which inorganic ion exchangers are found to be suitable. Zirconium based ion exchangers have received attention because of their excellent ion exchange behaviour. A bimetallic heteropoly acid salt,cerium zirconium phosphotungstate (CZPT) was synthesized by precipitation method. Chemical composition was determined by EDS method and structural characterizations were done by Thermo gravimetric analysis, X-ray diffraction analysis and Fourier Transform Infrared Spectroscopic analysis etc. UV-Visible diffuse reflectance spectroscopic studies were carried out for characterization as well as to study the optical properties. Ion exchange properties were studied by determining ion exchange capacity and distribution coefficients for various metal ions. pH titration studies, effect of hydrated ionic radii and temperature on ion exchange capacities and stability in various media were also studied. The distribution studies revealed that the material is a good scavenger of metal ions such as bismuth, copper, strontium, lead, thorium etc. On the basis of the selectivity pattern, the separation potential of the ion exchanger was explored by carrying out binary separations of metal ions such as Ca2+, Hg2+, Mg2+, Zn2+, Co2+ and Ni2+ from Bi3+on a column of the ion exchanger by using suitable eluents. The eluents were selected after studying the electrolyte effect on distribution coefficients of metal ions. Difference in selectivity towards aluminium and magnesium was used for the analysis of these ions in antacids. The material was found to absorb all the light in the UV region and this knowledge can be utilized for photo stability of pigments by introducing this. In addition to this, it shows electronic and ionic conduction also. Thus the material find promising applications in various fields by combining its ion exchange properties, catalytic activity, electron exchange properties, optical properties, electrical properties, semiconducting properties etc.

References

  1. Anish Khan et al, Review on Composite Cation Exchanger as Interdicipilinary Materials in Analytical Chemistry, Int. J. Electrochem. Sci., 73854-3902 (2012)
  2. Preetha B. and Janardanan C., Synthesis, ion exchange properties, analytical and catalytic applications of nano sized cerium zirconium phosphate, J. Indian Chem. Soc8 September 1377-1382 (2011)
  3. Preetha B. and Janardanan C., UV-Visible Diffuse Reflectance spectroscopic studies on Mn and Cu ion exchange of newly synthesized cerium zirconium antimonite and its application in dye degradation, Res.J.Recent.Sci., 15-9 (2012)
  4. Khan A.A. et al, Preparation and characterization of electrically conducting polypyrroleSn(IV) phosphate cation-exchanger and its application as Mn(II) ion selective membrane electrode,Journal of Advanced Research, 2(4), 341–349 (2011)
  5. Weqar Ahmad Siddiqui and Shakeel Ahmad Khan.Synthesis, characterization and ion exchange properties of zirconium (IV) tungstoiodophosphate, a new cation exchanger Bull. Mater. Sci., 30(1), 43–49 (2007)
  6. VivekananthanV,Synthesis of mixed Oxides of Cerium-Iron Nanostructures for Effective Removal of Heavy Metals from Waste Water, Res. J. Recent. Sci.,212-217 (2014) 3(ISC-2013)
  7. Gajendra Kumar Pradhan, K.M. Parida, Fabrication of iron-cerium mixed oxide: an efficient photocatalyst for dye degradation, Inter. J. Eng. Sci. Tech., 2(9), 53-65 (2010)
  8. Syed Ashfaq Nabi, Sajad Ahmad Ganai, Amjad Mumtaz Khan, Effect of Surfactants and Temperature on Adsorption Behavior of Metal Ions on Organic–Inorganic Hybrid Exchanger, Acrylamide Aluminum Tungstate, J Surfact Deterg, 11(3), 207-213 (2008)
  9. Sajid Ali Ansari et al, Band gap engineering of CeOnanostructure using an electrochemically active biofilm for visible light applications RSC Adv., 16782-16791 (2014)
  10. Alessandro Trovarelli, Catalysis by Ceria and Related Materials, Second Edition, Imperial College Press, (2013)
  11. Bing-Xin Wei et al,Photo-stability of TiO particles coated with several transition metal oxides and its measurement by rhodamine-B degradation, Adv powder technol., 24(3), 708-713 May (2013)