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Functional electrochemically-active ultra-thin Nafion films
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Bertoncello, Paolo, Peruffo, Massimo, Li, Fei and Unwin, Patrick R. (2008) Functional electrochemically-active ultra-thin Nafion films. Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol.321 (No.1-3, Sp. Iss. SI). pp. 222-226. doi:10.1016/j.colsurfa.2007.12.053
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Official URL: http://dx.doi.org/10.1016/j.colsurfa.2007.12.053
Abstract
Two methods for adding electrochemical functionality to ultra-thin Nation films are described. First, a novel "one-step procedure" to incorporate cationic redox mediators such as methyltrimethylammonioferrocene (FA(+)), within ultra-thin Nafion films is proposed. Ultra-thin films of Nafion containing FA(+), were prepared on indium tin oxide (ITO) electrodes using the Langmuir-Schaefer (LS) technique. The morphology and thickness of the films were evaluated with atomic force microscopy (AFM). Film thicknesses were 1.9 +/- 0.3 nin per LS layer and voltammetric data confirmed the successful incorporation of the mediator into the films. Key parameters such as surface coverage, concentration of the mediator within the films and apparent diffusion coefficients were extracted. Second, Pd nanoparticles were formed within Nafion LS films by loading pristine films with Pd2+ and then reducing the ions to form Pd. The catalytic properties of this novel nanocomposite for hydrogen oxidation were examined using cyclic voltammetry. (c) 2008 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Divisions: | Faculty of Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Thin films, Electrochemistry, Nanoparticles, Surface chemistry, Polymers, Hydrogen -- Oxidation | ||||
| Journal or Publication Title: | Colloids and Surfaces A: Physicochemical and Engineering Aspects | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0927-7757 | ||||
| Official Date: | 15 May 2008 | ||||
| Dates: |
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| Volume: | Vol.321 | ||||
| Number: | No.1-3, Sp. Iss. SI | ||||
| Number of Pages: | 5 | ||||
| Page Range: | pp. 222-226 | ||||
| DOI: | 10.1016/j.colsurfa.2007.12.053 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | European Union (EU), European Cooperation in the Field of Scientific and Technical Research (Organization) (COST), Sixth Framework Programme (European Commission) (FP6) | ||||
| Grant number: | MRTN-CT-2003-504233 (EU), D31/0001/04 (COST), D36/005/06 (COST), MEIF-CT-2005-515356 (FP6) | ||||
| Version or Related Resource: | Presented at: 12th International Conference on Organized Molecular Films, Cracow, Poland, Jul 01-05, 2007 | ||||
| Type of Event: | Conference |
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