Electrochemical Behaviour Of Ferrocene/Ferricinium Redox System In Pure And CO2 Saturated [C6MIM][PF6]

https://doi.org/10.22146/ajche.50063

Sebastien Chanfreau(1*), Liang-Nian He(2), Bing Yu(3)

(1) State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, People’s Republic of China
(2) State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, People’s Republic of China
(3) State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, 300071, Tianjin, People’s Republic of China
(*) Corresponding Author

Abstract


The electrochemical behaviour of ferrocene has been studied in green solvent combining pure ionic liquid and CO2. Experimental results were achieved for the Fc/Fc+ (ferrocene/ferricinium ion) oxidation/reduction in pure and CO2 saturated 1-hexyl-3-methylimidazolium hexafluorophosphate ([C6MIM][PF6]) over the temperature range from 298.15 K to 323.15 K. Peak shaped voltammograms were obtained and usual electrochemical parameters were calculated in order to classify electron process at the electrode. Diffusion coefficients of electroactive species were determined in the order of 10-11 m2 s-1 using the Randles–Ševcík relationship. Mass transport was also favoured by both increases in temperature and dilution of CO2 in the media.

Keywords


Ionic Liquid, Ferrocene, Electroanalysis, Diffusion coefficient

Full Text:

PDF


References

  1. M. Lancaster: "Green chemistry: an introductory text", Cambridge, UK. (2002).
  2. P.T. Anastas and J.C. Warner: "Green Chemistry: Theory and Practice", Oxford University Press, New York (2000).
  3. J.M. DeSimone and W. Tumas: "Green Chemistry Using Liquid and Supercritical Carbon Dioxide", Oxford University Press, New York (2003).
  4. S. Chanfreau, P. Cognet, S. Camy and J.-S. Condoret: Electrochemical determination of ferrocene diffusion coefficient in liquid media under high CO2 pressure: Application to DMF–CO2
  5. P. Bonhôte, A.P. Dias, N. Papageorgiou, K. Kalyanasundaram and M. Grätzel: Hydrophobic, Highly Conductive Ambient-Temperature Molten Salts, Inorg. Chem. 35 (1996) 1168-1178. mixtures, J. Electroanal. Chem., 604 (2007) 33-40.
  6. P. Hapiot and C. Lagrost: Electrochemical Reactivity in Room-Temperature Ionic Liquids, Chem. Rev. 108 (2008) 2238-2264.
  7. S. Chanfreau, M. Mena, J. Porras-Domínguez, M. Ramírez-Gilly, M. Gimeno, P. Roquero, A. Tecante and E. Bárzana: Enzymatic synthesis of poly-l-lactide and poly-l-lactide-co-glycolide in an ionic liquid. Bioprocess Biosyst. Eng. 33 (2010) 629-638.
  8. M. Mena, S. Chanfreau, M. Gimeno and E. Bárzana: Enzymatic synthesis of poly-l-lactide-co-glycolide in the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate. Bioprocess Biosyst. Eng. 33 (2010) 1095-1101.
  9. E.I. Rogers, D.S. Silvester, D.L. Poole, L. Aldous, C. Hardacre and R.G. Compton: Voltammetric Characterization of the Ferrocene|Ferrocenium and Cobaltocenium|Cobaltocene Redox Couples in RTILs. J. Phys. Chem. C 112 (2008) 2729-2735.
  10. M. Galinski, A. Lewandowski and I. Stepniak: Ionic liquids as electrolytes. Electrochim. Acta 51 (2006) 5567-5580.
  11. A. Lewandowski, L. Waligora and M. Galinski: Ferrocene as a Reference Redox Couple for Aprotic Ionic Liquids. Electroanalysis 21 (2009) 2221-2227.
  12. A.J. Bard and L.R. Faulkner: "Electrochemical Methods: Fundamentals and Applications", John Wiley & Sons, Inc. 2nd edition, New York (2001).
  13. J.G. Huddleston, A.E. Visser, W.M. Reichert, H.D. Willauer, G.A. Broker and R.D. Rogers: Characterization and comparison of hydrophilic and hydrophobic room temperature ionic liquids incorporating the imidazolium cation. Green Chem. 3 (2001) 156-164.
  14. S. Chanfreau, P. Cognet, S. Camy and J.-S. Condoret: Electrocarboxylation in supercritical CO2 and CO2-expanded liquids J. Supercrit. Fluid, 46 (2008) 156-162.



DOI: https://doi.org/10.22146/ajche.50063

Article Metrics

Abstract views : 1669 | views : 973

Refbacks

  • There are currently no refbacks.


ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.