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  • Επιστημονικές Δημοσιεύσεις Μελών ΠΘ (ΕΔΠΘ)
  • Δημοσιεύσεις σε περιοδικά, συνέδρια, κεφάλαια βιβλίων κλπ.
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A facile soft-template synthesis of ordered mesoporous carbon/tungsten carbide composites with high surface area for methanol electrooxidation

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Author
Wang, Y.; He, C.; Brouzgou, A.; Liang, Y.; Fu, R.; Wu, D.; Tsiakaras, P.; Song, S.
Date
2012
DOI
10.1016/j.jpowsour.2011.10.037
Keyword
Methanol electrooxidation
Ordered mesoporous materials
Pt@OMC/WC
Soft-template
Tungsten carbide
2D-hexagonal
Carbide composites
High activity
High surface area
Large surface area
Mass activity
Mesoporous carbon
Metal carbides
Ordered mesoporous
Ordered mesoporous carbon
Ordered nanostructures
Porous electrodes
Synergetic effect
Utilization efficiency
Ammonium compounds
Block copolymers
Electrooxidation
Magnesium
Mesoporous materials
Methanol
Polyethylene oxides
Propylene
Tungsten
Platinum
Metadata display
Abstract
Ordered 2D hexagonal mesoporous carbon/tungsten carbide (OMC/WC) composite nanomaterials have been successfully synthesized for the first time by the soft-template method with ammonium metagungstate as tungsten precursor and poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) tri-block copolymer (PEO-PPO-PEO) (F127) as a soft-template. With loaded Pt, the Pt@OMC/WC demonstrates better performance than the commercial PtRu@C for methanol electrooxidation in terms of specific mass activity by a factor of 2.4 (per mg Pt) and 3.2 (per mg metal). Its high activity could be attributed not only to the synergetic effect of WC, but also to its highly ordered nanostructure and large surface area for high utilization efficiency of Pt and desirable mass transportation in a porous electrode. This work is expected to provide a feasible approach for the preparation of ordered mesoporous self-supported metal carbides. © 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/11615/34664
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  • Δημοσιεύσεις σε περιοδικά, συνέδρια, κεφάλαια βιβλίων κλπ. [9728]

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