Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 120, Issue 2-3, Pages 452-455Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.11.042
Keywords
Tungsten oxide; Nanorods; Thermal evaporation; Photocatalyst
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Funding
- Ministry of Commerce, Industry and Energy (MOCIE) [RTI04-01-04]
- Korean Government (MOEHRD) [KRF-2005-005-J13101]
- National Research Foundation of Korea [2009-0094037] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Tungsten oxide (WO3) nanorods were grown on W substrates by thermal evaporation of WO3 powder at high temperature without using any catalyst and then by subsequent air annealing. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations revealed that the synthesized WO3 nanorods were highly dense and single crystalline. Optical absorption measurements showed that WO3 nanorods can absorb light up to 480-500 nm. WO3 nanorods showed good photocurrent response with maximum current density of 1.5 mA cm(-2). The photocatalytic degradation of methylene blue revealed that WO3 nanorods have enhanced photocatalytic efficiency. (C) 2009 Elsevier B.V. All rights reserved.
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