Medium Dependent Size and Shape Tuning of Indium Oxide Nanoparticles and Their Gas Sensing Properties
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.
Document Type: Research Article
Publication date: December 1, 2011
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