Fabrication of network films of conducting polymer-linked polyoxometallate-stabilized carbon nanostructures
Idioma
en
Article de revue
Este ítem está publicado en
Electrochimica Acta. 2006, vol. 51, n° 11, p. 2373-2379
Elsevier
Resumen en inglés
The ability of a Keggin-type polyoxometallate, phosphododecamolybdate (PMo12O403−), to form stable anionic monolayers on carbon nanoparticles and multi-wall nanotubes is explored here to produce stable colloidal solutions ...Leer más >
The ability of a Keggin-type polyoxometallate, phosphododecamolybdate (PMo12O403−), to form stable anionic monolayers on carbon nanoparticles and multi-wall nanotubes is explored here to produce stable colloidal solutions of polyoxometallate covered carbon nanostructures and to disperse them within conducting polymer, poly(3,4-ethylenedioxythiophene), i.e. PEDOT, or polyaniline multilayer films. By repeated alternate treatments in the colloidal suspension of PMo12O403−-protected carbon nanoparticles or nanotubes, and in the acid solution of a monomer (3,4-ethylenedioxythiophene or aniline), the amount of the material can be increased systematically (layer-by-layer) to form stable three-dimensional organized arrangements (networks) of interconnected organic and inorganic layers on electrode (e.g. glassy carbon) surfaces. In hybrid films, the negatively charged polyoxometallate-covered carbon nanostructures interact electrostatically with positively charged conducting polymer ultra-thin layers. Consequently, the attractive electrochemical charging properties of conducting polymers, reversible redox behavior of polyoxometallate, as well as the mechanical and electrical properties of carbon nanoparticles or nanotubes can be combined. The films are characterized by fast dynamics of charge transport, and they are of potential importance to electrocatalysis and charge storage in redox capacitors.< Leer menos
Palabras clave en inglés
Phosphomolybdate
Monolayers
Carbon nanoparticles
Multi-walled carbon nanotubes
Poly(3
4-ethylenedioxythiophene)
Polyaniline
Organized multilayers
Hybrid films
Organic–inorganic composites
Orígen
Importado de HalCentros de investigación