Electrochemical Reduction of Uranyl Ion in Aqueous Basic Solutions

염기성 수용액에서 우라닐이온의 전기화학적 환원

  • Published : 1985.04.20


The electrochemical reduction of uranyl ion in aqueous basic media has been examined by d. c. polarography, differential pulsed polarography and cyclic voltammetry. From voltammograms obtained in uranyl solutions containing 0.1M sodium bicarbonate, either with or without the same amounts of sodium tripolyphosphate it is concluded that the first wave corresponds to the reduction of $UO_2^{2+}$ to $UO_2^+$. It is assumed that the uranyl ion undergoes appreciable hydrolysis in these media. The hydrolysis product $UO_2OH^+$ from $UO_2^{2+}$ is not reduced at the first wave, but is reduced at the second wave together with $UO_2^+$. The diffusion current was found proportional to the uranyl concentration in a range between $7.5 {\times} 10^{-4}$ and $3.75 {\times}10^{-3}$M.



  1. J. Amer. Chem. Soc. v.67 W.E. Harris;I. M. Kolthoff
  2. J. Phy. Chem. v.63 R.T. Iwamoto
  3. J. Amer. Chem. Soc. v.71 K.A. Kraus,(et al.)
  4. J. Inorg. Nucl. Chem. v.11 P.J. Elving;A.F. Krivis
  5. J. Amer. Chem. Soc. v.69 W.E. Harris;I.M. Kolthoff
  6. Acta Chim. Scand. v.5 S. Ahrland
  7. Nippon Kagaku Zasshi v.81 Y.N. Murata
  8. Nippon Kagaku Zasshi v.87 K.Y. Hagiwara
  9. Anal. Chim. Acta. v.20 P.R. Subbaraman;N.R. Joshi;J. Gupta
  10. Exptl. Med. Surg. v.1 L. Frankenthal;C.N. Neuberg
  11. Chemistry of Specific, Selective and Sensitive Reactions F. Feigl
  12. Polarography(2nd ed.) I.M. Kolthoff;J.J. Lingane
  13. J. Amer. Chem. Soc. v.74 P. Senise;P. Delahay
  14. Wiener Ber. Mitt. d. Ra-Inst. no.360 F. Hernegger;B. Karlik
  15. v.4 no.12 F. Hernegger;B. Karlik;Goeteborgs K. Vetensk-Samh;Handl. V.B
  16. J. Amer. Chem. Soc. v.68 W.E. Harris;I.M. Kolthoff
  17. J. Amer. Chem. Soc. v.75 E.F. Orlemann;d. M. Kern
  18. J. Amer. Chem. Soc. v.71 D.M. Kern;E.F. Orlemann