Characterisation, phase stability and surface chemical properties of photocatalytic active Zr and y co-doped anatase TiO2 nanoparticles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F13%3A00390587" target="_blank" >RIV/61388980:_____/13:00390587 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jssc.2012.12.018" target="_blank" >http://dx.doi.org/10.1016/j.jssc.2012.12.018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jssc.2012.12.018" target="_blank" >10.1016/j.jssc.2012.12.018</a>

Result language
angličtina
Original language name
Characterisation, phase stability and surface chemical properties of photocatalytic active Zr and y co-doped anatase TiO2 nanoparticles
Original language description
Abstract We report on the characterization, phase stability, surface chemical and photocatalytic properties of Zr and Y co-doped anatase TiO2 nanoparticles prepared by homogenous hydrolysis methods using urea as precipitating agent. The materials were analyzed by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, BET isotherm and BJH pore size distribution measurements. It is shown that Y and Zr ions replace Ti ions in the anatase TiO2 structures up to a critical total dopant concentration of approximately 13 wt%. The co-doped particles show increased phase stability compared to pure anatase TiO2 nanoparticles. The anatase to rutile phase transformation is shown to be preceded by cation segregation and dissolution with concomitant precipitation of Y 2Ti2-xZrxO7 and ZrTiO4. Co-doping modifies the optical absorption edge with a resulting attenuation of the Urbach tail. The band gap is slightly blue-shifted at high doping concentrations, and red shifted at lower doping c
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/FI-IM5%2F231" target="_blank" >FI-IM5/231: Realization of new nanostructures based on nanodispersive oxo-bisulphides Ti, Cd, Zn as active materials for degradation of warfare agents</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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