Structural transformation study of TiO2 nanoparticles annealing at different temperatures and the photodegradation process of eosin-Y |
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Authors: | P Pandi C Gopinathan |
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Institution: | Department of Solar Energy, School of Energy Sciences, Madurai Kamaraj University, Tamilnadu, India |
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Abstract: | Hydrothermal method was used to prepare TiO2 nanoparticles with annealing temperature at 500 °C–700 °C. The mixture of anatase-rutile phase was investigated by powerful tool of X-ray diffraction (XRD). The structural parameters of anatase and rutile mixture phaseTiO2 nanoparticles were calculated from the Rietveld refinement. The transformation rate of rutile was increased linearly with an annealing temperature of 500 °C–700 °C. The spherical morphology of the anatase and rutile mixed phase were obtained by scanning electron microscope and transmission electron microscope. The spherical particle of the anatase and rutile TiO2 shows with great aggregation with different size and within the range of few tens nm. The EDAX study revealed the presence of titanium and oxygen. The best photocatalytic activity was identified as the 87.04% of anatase and 12.96% of rutile mixer phase of TiO2. Various factors could be involved for a better photocatalytic activity. |
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Keywords: | TiO2 anatase rutile bond length photocatalyst |
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