Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F15%3A00438977" target="_blank" >RIV/61388980:_____/15:00438977 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cattod.2014.04.022" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2014.04.022</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2014.04.022" target="_blank" >10.1016/j.cattod.2014.04.022</a>

Result language
angličtina
Original language name
Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid
Original language description
Peroxo-polytitanic acid foams annealed at temperature above 500 degrees C lose volatile components and excess of oxygen providing anatase in the form of thin leaves consisting of intergrown nanocrystalline anatase particles which transform at temperatures above 850 degrees C to rutile. The size and shape of the initial leaflets forming the foam is preserved up to similar to 900 degrees C. We observed that the annealed material is highly photoactive, owing to highly anisotropic shape of anatase aggregates and their perfect crystallinity. Outstanding photocatalytic activity determined by measuring the kinetics of degradation of Methylene Blue (MB) and 4-chlorphenol (4-CP) as well as measuring the formation of hydroxyl radical spin adducts by EPR spectroscopy was observed. All three methods demonstrated significantly higher activity in comparison with the Degussa P25 photocatalyst. Both methods used for photoactivity tests provided similar results, the activity increased with increasing a
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/GA14-20744S" target="_blank" >GA14-20744S: Study of chemical and electrochemical processes influencing growth of self-organized TiO2 nanotubes in solutions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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