title: Electrocatalysts of Pt-TiO2 prepared by sol-gel and microwave-assisted polyol method for the oxygen reduction reaction in 0.5 M H2SO4.
abstract: Electrocatalysts of Pt-TiO2 were prepared by sol-gel and microwave assisted polyol method for the oxygen reduction reaction in acid media. The prepared electrocatalysts were morphologically and structurally characterized by X-Ray Diffraction, Scanning Electronic Microscopy and EDX analysis. Cyclic voltammetry and rotating disk electrode techniques were employed for electrocatalytic evaluation. It was found that electrocatalysts consisted of crystalline particles with nanometric size, and those obtained at pH = 9 showed an acceptable activity for the oxygen reduction reaction in acid media.
authors.affiliation: Instituto Nacional de Investigaciones Nucleares, Depto. de Química, Apdo. Postal 181027 Col. Escandón, C.P. 11801 México D.F., México.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: García-Contreras
authors.affiliation: Instituto Nacional de Investigaciones Nucleares, Depto. de Química, Apdo. Postal 181027 Col. Escandón, C.P. 11801 México D.F., México.
authors.forename: Suilma M
authors.initials: SM
authors.lastname: Fernández-Valverde
mesh_terms: D002384:Catalysis; D004563:Electrochemistry / Q000379:methods*; D006361:Heating / Q000379:methods*; D008422:Materials Testing; D010084:Oxidation-Reduction / Q000528:radiation effects; D044367:Phase Transition / Q000528:radiation effects; D010984:Platinum / Q000737:chemistry* / Q000528:radiation effects; D011108:Polymers / Q000737:chemistry* / Q000528:radiation effects; D013464:Sulfuric Acids / Q000737:chemistry* / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D011108:Polymers; D013464:Sulfuric Acids; C024617:polyol; C009495:titanium dioxide; D010984:Platinum; D014025:Titanium; C033158:sulfuric acid