REAL

Preparation and characterization of novel Ti0.7W0.3O2-C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance

Gubán, Dorottya and Borbáth, Irina and Pászti, Zoltán and Sajó, István and Drotár, Eszter and Hegedűs, Mihály and Tompos, András (2015) Preparation and characterization of novel Ti0.7W0.3O2-C composite materials for Pt-based anode electrocatalysts with enhanced CO tolerance. APPLIED CATALYSIS B-ENVIRONMENTAL, 174. pp. 455-470. ISSN 0926-3373

[img]
Preview
Text
TiW_Accepted_Author_Manuscript.pdf

Download (1MB) | Preview

Abstract

Ti-based electroconductive mixed oxides were deposited onto activated carbon by using three different sol-gel-based multistep synthesis routes. As demonstrated by X-ray diffraction, high crystallinity of the tungsten-loaded rutile was achieved by a sequence of annealing in inert atmosphere at 750°C and a short reductive treatment at 650°C. Formation of the rutile phase on the carbon support before the high temperature treatment has been proved to be the prerequisite for complete W incorporation into the rutile lattice. The structural and compositional properties of the mixed oxides were explored by transmission electron microscopy, temperature programmed reduction and X-ray photoelectron spectroscopy. Anode electrocatalysts were formulated by loading the composite of the activated carbon and the Ti-based electroconductive mixed oxides with 40 wt% Pt. Enhanced CO tolerance along with considerable stability was demonstrated for the electrocatalyst prepared using the Ti 0.7 W 0.3 O 2 -C composite material with high degree of W incorporation.

Item Type: Article
Subjects: Q Science / természettudomány > Q1 Science (General) / természettudomány általában
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 03 Apr 2015 17:04
Last Modified: 03 Apr 2017 23:15
URI: http://real.mtak.hu/id/eprint/23467

Actions (login required)

Edit Item Edit Item