Structural study of titanium dioxide (TiO2) nanopowder prepared by sol-gel under hypercritical drying
Nano-sized TiO2 powders have been prepared by the sol–gel method under hypercritical conditions by hydrolyzing titanium tetra-isopropoxide. The polycrystalline structure and morphology of the powder have been characterized by X-ray diffraction (XRD), Fourier Transform...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2011
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/cdbe15aee7404b34a57dd96fe230cf69 |
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| Sumario: | Nano-sized TiO2 powders have been prepared by the sol–gel method under hypercritical
conditions by hydrolyzing titanium tetra-isopropoxide. The polycrystalline structure and
morphology of the powder have been characterized by X-ray diffraction (XRD), Fourier
Transform InfraRed spectroscopy, scanning electron microscopy (SEM), and transmission
electron microscopy (TEM). The XRD spectrum shows the anatase phase of the prepared TiO2
powder. The energy dispersive analysis (EDS) and FT-IR confirmed the formation of TiO2.
TEM and SEM micrographs showed that the TiO2 grains are micrometric and have irregular
shapes. These grains are formed by agglomeration of TiO2 nanocrystallites with an average size
of 10 nm. |
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