Ion transfer electrodes based on carbon nanofibers embedded in silicate film modified with room temperature ionic liquid

Ewa A. Rozniecka 1Joanna Niedziolka-Jonsson 1Juliette Sirieix-Plenet 2Laurent Gaillon 2Maria A. Murphy 3Frank Marken 4Marcin Opallo 1

1. Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, Warszawa 01-224, Poland
2. Universite Pierre et Marie Curie, Place Jussieu, Bat F Boite 39, Paris 75252, France
3. Loughborough University, Leicestershire, Loughborough 113TU, United Kingdom
4. University of Bath, Claverton Down, Bath 27AY, United Kingdom

Abstract

Biphasic systems composed of room temperature ionic liquids (RTILs) being in direct contact with an aqueous phase received recently some attention. This is because of their ability to extract ions or neutral molecules from the aqueous phase and therefore their potential application in extraction or liquid-liquid separation [1,2].
Among other driving forces the ion transfer across RTIL - aqueous solution interface can be driven by electric charge generation within RTIL during the electrooxidation of redox probe dissolved in this phase [3]. If RTIL is very hydrophobic this electrochemical process generates anion transfer from aqueous phase to RTIL [3]. To realise such system in practise the development of electrode support exhibiting strong affinity towards RTIL and repelling properties towards the aqueous phase is desirable. This can be done by application of heterogeneous conducting material combining above properties. Recently we have shown that carbon - hydrophobic silica composite material can be used for this purpose [4]. Since this material cannot be employed for thin film preparation we propose to use for this purpose hydrophobic carbon nanofibers (CNF) - silica film deposited on the electrode surface [5].
In this work we have attempted to immobilize microphases or thin film of redox probe (tert-butylferrocene, tBuFc) solution in the hydrophobic ionic liquid (1-decyl-3-methyl-imida- zolium bis(trifluoromethyl-sulfonyl)imide, C10mimN(Tf)2) on CNF-silica film modified ITO electrode.
The electrochemical properties of these electrodes were investigated using cyclic voltammetry and differential pulse voltammetry in the aqueous solution of wide range of anions. The shape of the voltammogram and the current magnitude depends on the type of electrode surface and the form of the ionic liquid deposit. The anion effect on the ability of tBuFc molecules to be electrooxidized is observed. The presence of the hydrophobic CNF-silica film enhances the magnitude of the current.

[1] Ionic Liquids in Synthesis (eds. P. Wasserscheid, T. Welton) Wiley-VCH, Winheim 2003.
[2] Ionic Liquids, Industrial Applications (eds. R. D. Rodgers, K. R. Seddon) ACS Symp. Ser., 2002, 818.
[3] J. Niedziolka, E. Rozniecka, J. Stafiej, J. Sirieix-Plenet, L. Gaillon, D. di Caprio, M. Opallo, Chem. Comm., 23 (2005) 2954.
[4] E. Rozniecka, G. Shul, J. Sirieix-Plenet, L. Gaillon, M. Opallo, Electrochem. Comm., 7 (2005) 299.
[5] J. Niedziolka, M. A. Murphy, F. Marken, M. Opallo, 2005, submitted.

 

Related papers
  1. BIOPHOSENS: Carbon nanomaterials based electrochemical biosensor for detection of highly toxic organophosphate pesticides
  2. Titanium dioxide nanotube and enzyme-enhanced photo-bio-fuel cell
  3. Electrodeposition method for preparing SERS- and LSPR-active platforms
  4. Ascorbic acid-oxygen biofuel cell and  zinc-oxygen cell based on carbon-silicate biocathode
  5. Impedance Methods in Electrochemistry
  6. Redox Reactivity of Methylene Blue in the Pores of UMCM-1 Metal-Organic Frameworks
  7. Carbon Nanoparticle Surface Modification for Sensor Development
  8. A role of phosphonium-phosphate ionic liquid in anion-sensing mechanism at toluene-modified electrode
  9. One-step reduction and functionalization of graphene oxide sheets using biomimetic dopamine derivatives
  10. Electrosynthesis of Ionic Liquid Covalently Bounded to Mesoporous Silicate at a Three Phase Junction Electrode|Liquid|Liquid
  11. Pyrene functionalised single-walled carbon nanotubes for bioelectrocatalysis
  12. Bioelectrocatalytic electrode obtained by layer-by-layer assembling of sol-gel processed ionic liquid and hydrophilic carbon nanoparticles and adsorbed bilirubine oxidase
  13. Ion Association Effects in Cellulose – Poly-(Diallyldimethylammonium) Reassembled Membranes Immersed in Acetonitrile
  14. Conduction in Nanoparticle Assemblies and Mesoporous Films
  15. Multistep electroreduction of fullerene C60 in 1,2-dichlorobenzene-water biphasic system
  16. A facile preparation of the nanoparticulate film from conductive and nonconductive particles of the opposite charge
  17. Positively Charged Surface Functionalised Carbon Nanoparticles as Binding Sites for Redox Active Species
  18. Triple Phase Boundary Photo-Voltammetry: Resolving Rhodamine B Reactivity in 4-(3-Phenylpropyl)-Pyridine Microdroplets
  19. Carbon Dioxide Sensing Systems Based On Processes At Triple Phase Boundary Interfaces
  20. Bilirubin oxidase modified carbon ceramic electrode for bioelectrocatalytic reduction of dioxygen supplied from gas phase
  21. Electrochemical behaviour of carbonised cellulose nanofibril films on the ITO electrode surface
  22. MoSe2 Substrates for the Electrodeposition of CISe Semiconductor Films
  23. Silver Nanoparticle Catalysed NO3- Reduction Characterised with a Hydrodynamic Generator-Collector SPCE System
  24. Determination of Dopamine in Presence of Ascorbate in Ultrathin Carbon Nanoparticle Composite Film Electrodes
  25. Bioelectrocatalytic dioxygen reduction at carbon nanotubes – silicate composite film modified electrode
  26. Driving ion transfer across the toluene (trihexyl(tetradecyl)-phosphonium tris(pentafluoroethyl)trifluoro-phosphate) | water (electrolyte) interface with the MnTPP(III/II) redox system
  27. Covalently bonded ionic liquid modified electrodes
  28. Electrocatalytic Sulphite Detection at a Liquid-Liquid-Solid Three-Phase Boundary Electrode Sensors
  29. Electrochemical Processes at Electrodes in Microwave Fields
  30. Liquid-Liquid Ion-Transfer Electrochemistry at Stationary and at Flowing Triple Phase Boundaries
  31. Scanning electrochemical microscopy study of laccase embedded in sol-gel processed silicate film
  32. Microwave-assisted Capillary Electrophoresis with Electrochemical Detection
  33. Analysis of Chlorobenzenes in Environmental Water Samples using Microwave-Assisted with Ionic-Liquids Liquid-Phase Microextraction
  34. Electrochemical reactivity of proteins immobilised in mesoporous titania
  35. New electrode surfaces for solid | liquid | liquid triple phase boundary electrochemistry
  36. Room temperature ionic liquid based carbon paste electrode
  37. Biphasic electrochemistry of ionic liquids deposited on the electrode surface
  38. Nanoobjects embedded in silicate films for biphasic electrodes
  39. Electrocatalytic reduction of dioxygen by redox mediator and laccase immobilised in silicate thin film
  40. Electrochemical Processes in Mesoporous TiO2 Phytate Films
  41. Silicate Modified Electrodes for Chemical Sensing
  42. Carbon Ceramic Electrode Modified with Redox Probe Solution in Hydrophobic Polar Solvents

Presentation: Short communication at SMCBS'2005 Workshop, by Ewa A. Rozniecka
See On-line Journal of SMCBS'2005 Workshop

Submitted: 2005-07-21 12:11
Revised:   2009-06-07 00:44