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Medium Dependent Size and Shape Tuning of Indium Oxide Nanoparticles and Their Gas Sensing Properties

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Abstract:

Using three primary alcohols (methanol, ethanol and propanaol) as solvent Indium oxide nanoparticles were prepared. Interestingly, the nanoparticles prepared using the three alcoholic solvents showed different morphologies. Even though the formed particles showed a cube-like structure, different sizes in the morphology have been observed in room temperature synthesis. The prepared particles showed visible light emission when excited with UV light due to oxygen vacancies. The prepared nanoparticles were made as a composite film with polyvinyl alcohol and the gas sensing behaviour of the composite film has been tested with ethanol vapours. Nanoparticles prepared using the three solvent showed good responses to the test gas ethanol. In particular, the nanoparticles prepared using methanol and ethanol solvents showed good response to ethanol when compared with the particles prepared using propanol solvent.

Keywords: ALCOHOLYSIS; GAS SENSOR; NANOCRYSTALLINE MATERIALS; PVA-IN2O3 COMPOSITE FILM

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asem.2011.1106

Publication date: December 1, 2011

More about this publication?
  • Advanced Science, Engineering and Medicine (ASEM) is a science, engineering, technical and medical journal focused on the publishing of peer-reviewed multi-disciplinary research articles dealing with all fundamental and applied research aspects in the areas of (1) Physical Sciences, (2) Engineering, (3) Biological Sciences/Health Sciences, (4) Medicine, (5) Computer and Information Sciences, (6) Mathematical Sciences, (7) Agriculture Science and Engineering, (8) Geosciences, and (9) Energy/Fuels/Environmental/Green Science and Engineering.
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