Tungsten carbide nanocrystal promoted Pt/C electrocatalysts for oxygen reduction
Article Abstract:
Tungsten carbide nanocrystals on carbon and tungsten carbide nanocrystals and Pt on carbon composite electrocatalysts are prepared by the intermittent microwave heating method and tested for the electroreduction of oxygen in the acidic media. The results reveal that the tungsten carbide nanocrystal promoted Pt/C electrocatalyst is very active for oxygen reduction reaction (ORR) with the onset potential of 1.0 V vs SHE at ambient temperature that is over 100 mV more positive compared with that of traditional Pt/C electrocatalyst.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Multigram scale, solventless, and diffusion-controlled route to highly monodisperse PbS nanocrystals
Article Abstract:
High quality PbS nanocrystals are produced in multigram-scale quantities through a solventless, heterogeneous, and relatively green route. The heterogeneous nature of this reaction allows one to limit the diffusion in the system, allowing for unprecedented monodispersity and quality of the product demonstrated by a full width at half-maximum of the photoluminescence peak as low as 52 meV, a Stokes shift as low as 10 meV, and a quantum yield of 40%.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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