Mixed-oxide Ti1-xWxO2 as support for (photo)-electrochemical processes

S. Mokrane-Soualah (1, 2) , A.S. Gago (1) , A. Habrioux (1) , N. Alonso-Vante (1)

1 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
2 Lab Electrochem Corros & Energy Valorizat

In this study, mixed-oxides of Ti1-xWxO2 (0 <= x <= 0.3) nanomaterials have been synthesized via a multistep sol-gel process. The effect of W doping on the anatase structure and on the electrical conductivity of the material was investigated. Photo-electrochemical action spectra and UV-vis spectroscopy were used to determine the bang-gap energy of the mixed-oxides. The electrochemical stability of these materials was also investigated before they were tested as substrate for platinum nanocatalysts for oxygen reduction reaction. The metal was deposited onto the support either via the chemical route (carbonyl method) or via UV-irradiation

Mots clés: Substrate; TiO2; Sol-gel; Photoelectrochemistry; ORR

Domaines: Catalyse

S. Mokrane-Soualah, A.S. Gago, A. Habrioux, N. Alonso-Vante. Mixed-oxide Ti1-xWxO2 as support for (photo)-electrochemical processes. Applied Catalysis B: Environmental, 2014, 147, pp.756-763. ⟨10.1016/j.apcatb.2013.10.012⟩. ⟨hal-01191756⟩