Electrocatalytic oxidation of As(III) to As(V) using noble metal-polymer nanocomposites.
Nanocomposite materials synthesized by incorporation of Pt0 and Pd0 nanoparticles into a poly(pyrrole-alkylammonium) matrix were characterized by TEM. These nanocomposites coated onto C electrodes present strong electrocatalytic properties towards the oxidn. of arsenite to arsenate. Nanocomposite films modified electrodes were used for As(III) anal., with a detection limit reaching 2.4 $μ$M (0.17 ppm). The interest of these nanocomposite electrode materials deposited onto C felt macroelectrodes for the exhaustive electrocatalytic oxidn. of As(III) to As(V) solns. was also demonstrated. The use of a H2O-sol. poly(quaternary ammonium) salt acting both as supporting electrolyte and as extg. agent allowed one to efficiently remove the electrocatalytically generated As(V) species by liq. phase polymer-assisted retention (LPR) technique. [on SciFinder(R)]
Références
- Titre
- Electrocatalytic oxidation of As(III) to As(V) using noble metal-polymer nanocomposites.
- Type de publication
- Article de revue
- Année de publication
- 2010
- Auteurs
- Sanchez, Julio A., Rivas Bernabe L., S Pooley Amalia, Basaez Luis, Pereira Eduardo, Pignot-Paintrand Isabelle, Bucher Christophe, Royal Guy, Saint-Aman Eric, and Moutet Jean-Claude
- Revue
- Electrochim. Acta
- Volume
- 55
- Pagination
- 4876–4882
- ISSN
- 0013-4686
Soumis le 12 avril 2018