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Synthesis of Molybdenum Trioxide: Structure Properties and Sensing Film Preparation

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Abstract:

In this research, molybdenum trioxide (MoO3) nanoflakes were synthesized by a simple and low cost hydrothermal method for gas sensing application. Sodium molybdate (Na2MoO4·2H2O) was used as the precursor. The powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). After hydrothermal process, the powders were showed amorphous phase. However, after annealing process the MoO3 was observed as particles having the orthorhombic phase. The average particle sizes of MoO3 nanoflakes were about 80 nm. The morphologies, cross section and elemental compositions of sensing films were analyzed by SEM and EDS line-scan mode analysis. From the SEM image revealed nanoflakes morphologies of MoO3 and the thickness of MoO3 sensing film was about 10 mm. The obtained sensing film can be used as the sensing device to fabricate composited gas sensors for detection of some environmental hazardous gas (including ethanol, carbon monoxide, hydrogen sulfide, sulfur dioxide, nitrogen oxide, and ammonia) will report in the next research.

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Periodical:

Applied Mechanics and Materials (Volume 879)

Pages:

62-67

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.879.62

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Online since:

March 2018

Authors:

Ungkana Inpan, Pimpan Leangtanom, Pusit Pookmanee, Sukon Phanichphant, Viruntachar Kruefu*

Keywords:

Molybdenum Trioxide, Nanoflakes, Sensing Film

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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