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    Morphological, structural, and gas-sensing characterization of tin-doped indium oxide nanoparticles

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    Morphological, structural, and gas-sensing characterization of tin-doped indium oxide.pdf (176.3Kb)
    Date
    2014-01
    Author
    Ayeshamariam, A.
    Muhammad, Kashif
    Bououdina, M.
    Uda, Hashim, Prof. Dr.
    Jayachandran, M.
    Md. Eaqub, Ali
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    Abstract
    Tin-doped indium oxide (ITO) nanoparticles with stable cubic phases were synthesized using a sol–gel combustion method that includes gelation and combustion in organic fuel. The influence of SnO₂ on the phase and morphology of the In₂O₃ nanoparticles were studied by X-ray diffraction, scanning electron microscopy, and high resolution transmission electron microscopy (TEM), along with selected area electron diffraction. ITO nanoparticles with 11–20 nm crystallite size and 69–46 m²⧸g specific surface area were obtained. The lattice constant was nearly 10.12 Å, with orientation along the (222), (400), and (110) planes for all proportions of the doped SnO, indicating a stable cubic phase with high conductivity. The TEM micrograph of the ITO nanoparticles and powder revealed spherical morphology. The microstructure of the cured In₂O₃:Sn with Sn concentrations of 5, 10, 20, and 50 wt% demonstrated that the ITO nanoparticles clustered more densely with the increase in Sn concentration. The gas-sensing ability of the synthesized powders was demonstrated through the sensing of ethanol vapor at 200 °C.
    URI
    http://dspace.unimap.edu.my:80/dspace/handle/123456789/32727
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    • Uda Hashim, Prof. Ts. Dr. [243]
    • Institute of Nano Electronic Engineering (INEE) (Articles) [206]

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