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Synthesis of ZnO Microspheres with Different Morphologies and their Comparison of Gas Sensing Performance

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Abstract:

ZnO microspheres with complete and perforated morphologies were synthesized by a simple solvothermal method via regulating solvent composition. Material characterization has included XRD, SEM, XPS, Raman spectrum and Brunauer–Emmet–Teller (BET) methods. The introduction of ethanol into the solvent resulted in the morphology change from complete to perforated spheres, meanwhile generated more surface adsorption sites and larger specific surface area as demonstrated by XPS and BET analysis. A possible formation mechanism of ZnO microspheres is proposed to explain the perforation development process. The gas sensing performances of the sensors prepared using the complete and perforated spheres were compared to reveal the positive impact of morphology change.

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Periodical:

Applied Mechanics and Materials (Volume 624)

Pages:

30-35

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.624.30

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Online since:

August 2014

Authors:

Ming Li Yin*, Xin Hui Fan

Keywords:

Crystal Growth, Microstructure, XPS, ZNO

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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