Synthesis of WO3 Nanorods by Thermal CVD at Various Gas Flow Rates and Substrate Temperatures
ELECTROCHEMICAL AND SOLID STATE LETTERS(2011)
摘要
Tungsten oxide (WO3) nanomaterials have been extensively researched for applications such as semiconductor gas sensors and photocatalysis. We have synthesized WO3 nanorods (diameters: 100-150 nm; lengths: 400-500 nm) with high yields by thermal chemical vapor deposition (CVD). In our unique two-step heating process, catalysts were not required in the temperature zone (500-600 degrees C) of substrate. It suggests the experimental conditions played a dominant role in the growth of WO3 nanorods, especially in the case of the O-2 flow rate and substrate temperature. Moreover, this relatively simple growth process can lead to effective large-scale production of WO3 nanorods. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3586784] All rights reserved.
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