Polymer Membrane Stabilized Gold Nanostructures Modified Electrode and Its Application in Nitric Oxide Detection
| Autor: | Ramasamy Ramaraj, Subramani Thangavel |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Absorption spectroscopy Scanning electron microscope Surface plasmon Analytical chemistry Electrochemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials Electrochemical gas sensor chemistry.chemical_compound General Energy chemistry Chemical engineering Transmission electron microscopy Nafion Electrode Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 112:19825-19830 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp804310u |
| Popis: | Nafion polymer/gold nanostructures film that can be utilized as a proficient electrochemical sensor for nitric oxide was prepared by an electrochemical process, forming the gold nanostructures (Aunano) through infiltration into a Nafion (Nf) matrix preassembled on an electrode. The formation of gold nanostructures was monitored by the in situ spectroelectrochemical method. The in situ absorption spectra of Aunano showed systematic and uniform formation of gold nanostructures at the Nafion (Nf−Aunano)-modified electrode. The electrochemically formed Nf−Aunano was characterized by UV−visible spectroscopy, X-ray diffraction, scanning electron microscope, transmission electron microscope, and electrochemical techniques. The surface plasmon absorption spectra recorded for the wet and dry Nf−Aunano composite film showed the interaction between the gold nanostructures and the swelled polymer matrix. The longitudinal surface plasmon band and the TEM images observed for the Nf−Aunano showed the formation of nanoro... |
| Databáze: | OpenAIRE |
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