A SIMPLE METHOD FOR THE SYNTHESIS OF TUNGSTEN TRIOXIDE NANORODS ARRAY WITHOUT CATALYST

Julan Zhang, Gengmin Zhang, Dengzhu Guo, Yue Wu and Zhonghe Xi ()
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Julan Zhang: Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China
Gengmin Zhang: Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China
Dengzhu Guo: Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China
Yue Wu: Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China
Zhonghe Xi: Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871, China

Surface Review and Letters (SRL), 2007, vol. 14, issue 04, 607-610

Abstract: Arrays of tungsten oxide nanorods, approximately 500 nm in diameter and 10 μm in length, have been grown in a catalyst-free reaction by heating tungsten wires at 900°C in a humid argon flow. They were systematically characterized using different surface analysis techniques. The chemical composition was determined to be stable stoichiometric binary oxide monoclinic tungsten trioxide. Water vapor was found to be crucial for the formation of theseWO3nanorods. The vapor–solid (VS) process was introduced to discuss the growth mechanism.

Keywords: Low dimensional structures; oxides (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07009761

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