Enhanced Photocurrent Density of Tungsten Oxide Hollow Particle Arrays Produced by Colloidal Template Synthesis

Authors: Shin, Kahee; Moon, Jun Hyuk; Park, Jong Hyeok

Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 2, February 2011 , pp. 1538-1541(4)

Publisher: American Scientific Publishers

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Abstract:

Tungsten oxide hollow particle arrays were fabricated for use as the photoanode in photoelectro-chemical cells. These arrays were constructed through an electrochemical infiltration method in a three-dimensional colloidal array template. The enhanced contact area between the tungsten oxide and the electrolyte resulted in an increase in photocurrent when compared to a cell prepared with no template. The porous structures were greatly influenced by the temperature used during the thermal annealing step. This simple and cost-effective approach resulted in photocatalytic activity for hydrogen production that was three times higher than that of tungsten oxide prepared without the template.

Keywords: TUNGSTEN OXIDE; HOLLOW PARTICLES; COLLOIDAL TEMPLATE; WATER SPLITTING

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2011.3327

Publication date: 2011-02-01

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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.
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