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
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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 |
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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 |
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