Abstract
Tungsten trioxide nanoparticles were prepared by a simple approach using chitosan biopolymer as a template. These nanoparticles were characterized using x-ray diffraction, Raman spectroscopy, transmission electron microscopy and high resolution transmission electron microscopy. The average size of the WO 3 nanoparticles is 42 nm, and they intercalate a larger amount of hydrogen than tungsten trioxide, which is prepared without chitosan. The materials are tested for their electrocatalytic hydrogen evolution in a sulfuric acid medium, where WO3 nanoparticles show a fourfold higher activity than bulk tungsten trioxide.
Original language | English |
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Article number | 025702 |
Journal | Nanotechnology |
Volume | 19 |
Issue number | 2 |
DOIs | |
State | Published - 16 Jan 2008 |