Synthesis of indium tin oxide nanoparticles by a nonhydrolytic sol-gel method
AUTOR(ES)
Silva, Gabriel M., Faria, Emerson H. de, Nassar, Eduardo J., Ciuffi, Katia J., Calefi, Paulo S.
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2012
RESUMO
Indium tin oxide nanoparticles were synthesized in two different sizes by a nonhydrolytic sol-gel method. These powders were then transformed into ITO via an intermediate metastable state at between 300 and 600 ºC. The presence of characteristic O-In-O and O-Sn-O bands at 480 and 670 cm-1 confirmed the formation of ITO. The X-ray diffraction patterns indicated the preferential formation of metastable hexagonal phase ITO (corundum type) as opposed to cubic phase ITO when the reflux time was less than 3 h and the heat treatment temperature was below 600 ºC. Particle morphology and crystal size were examined by scanning electron microscopy.
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