Skip to main content

Molybdenum and Tungsten Promoted Carbons for Use as Catalyst Supports in Methanol Electro-Oxidation

Buy Article:

$113.00 plus tax (Refund Policy)

Abstract:

Two types of the molybdenum and tungsten promoted carbons (MWCs) were prepared by the successive impregnation and co-impregnation of molybdenum and tungsten precursors on carbon black with a heat treatment. The resulting MWCs were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical techniques and evaluated as a catalyst support for a Pt catalyst in methanol electro-oxidation. MWC-S, prepared by successive impregnation, showed a well developed carbidic phase with a large portion of tungsten carbide phase. In contrast, MWC-C, prepared by co-impregnation, had a lower amount of carbidic carbon and larger fraction of molybdenum carbide phase. MWCs-supported Pt catalysts showed higher catalytic activities than the Pt catalyst on pure carbon black in both CO oxidation and methanol electro-oxidation. In particular, Pt/MWC-S exhibited the highest performance among the Pt catalysts employed in this work. The high activity of Pt/MWC-S can be attributed to the positive effect of molybdenum-tungsten carbide phase, which promotes the activation of water and the removal of intermediate CO species.

Keywords: CARBON; METHANOL ELECTRO-OXIDATION; MOLYBDENUM; PT CATALYST; TUNGSTEN

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2299

Publication date: May 1, 2010

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
asp/jnn/2010/00000010/00000005/art00081
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more