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Optical and Quantum Electronics
Erschienen in: Optical and Quantum Electronics 2/2016

01.02.2016

Optical and structural properties of TiO2 nanopowders with Co/Ce doping at various temperature

verfasst von: Nasrollah Najibi Ilkhechi, Mahnaz Alijani, Behzad Koozegar Kaleji

Erschienen in: Optical and Quantum Electronics | Ausgabe 2/2016

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Abstract

In this study, preparation of 2 mol% Ce and 4 mol% Co doped TiO2 nanopowders via sol–gel process have been investigated. The effects of Co and Ce doping and calcination temperature (475–1000 °C) on the structural and optical properties of titania nanopowders studied by X-ray diffraction (XRD), scanning electron microscope, transmission electron microscope and UV–Vis absorption spectroscope. XRD results showed that, Titania rutile phase formation in ternary system (Ti–Co–Ce) was inhibited by Ce4+ and promoted by Co4+ co-doped TiO2 in high temperatures (500–700 °C) and 61 mol% anatase composition is retained even after calcination at 800 °C. The optical absorption spectrum indicates that the TiO2 nanoparticles have a direct band gap of 3.21 eV. But optical band gap of the doped TiO2 (2 mol% Ce and 4 mol% Co) was found to be 3.14–3.20 eV.
Vorheriger Artikel Enhancement piezoelectricity in poly(vinylidene fluoride) by filler piezoceramics lead-free potassium sodium niobate (KNN)
Nächster Artikel Polymer waveguide Bragg gratings made by laser patterning technique

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Metadaten
Titel
Optical and structural properties of TiO2 nanopowders with Co/Ce doping at various temperature
verfasst von
Nasrollah Najibi Ilkhechi
Mahnaz Alijani
Behzad Koozegar Kaleji
Publikationsdatum
01.02.2016
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 2/2016
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-016-0435-z

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