Název: Generation of TiO2 Nanoparticles for Follow-Up Inhalation Experiments with Laboratory Animals
Autoři: Moravec, Pavel ; Schwarz, Jaroslav ; Vodička, Petr ; Koštejn, Martin
Typ dokumentu: Příspěvky z konference
Konference/Akce: NANOCON International Conference /6./, Brno (CZ), 2014-11-05 / 2014-11-07
Rok: 2015
Jazyk: eng
Abstrakt: A method of TiO2 nanoparticle generation appropriate for follow-up long lasting inhalation experiments with laboratory animals was tested. Nanoparticles were synthesized in an externally heated tube reactor using titanium tetraisopropoxide as a precursor. Total 264 hours of particle generation in four experimental campaigns was performed with one batch of precursor without observable decrease of precursor volatility. Particle production was studied in wide range of experimental conditions such as reactor temperature, reactor flow rate and precursor vapor pressure by pyrolysis, using nitrogen as a carrier gas, and also in oxidizing atmosphere (10 vol. % of oxygen in the reaction mixture). Particle characteristics were investigated by scanning/transmission electron microscopy, energy dispersive spectroscopy, inductively coupled plasma optical emission spectrometry, elemental and organic carbon analyzer, X-ray diffraction and X-ray photoelectron spectrometry. As a result, particle production with number concentration high above 1.0 x 10(7) #/cm(3) and with primary particle size well below 50 nm can be easily achieved in most of investigated experimental conditions. Particles are free of elemental carbon, content of organic carbon is less than 10 weight %, detected crystalline phase is typically anatase, Ti is present in bonds Ti-O (TiO2) and total Ti concentration recalculated on TiO2 is approximately 80 mass %.
Klíčová slova: externally heated tube reactor; nanoparticle generation; TiO2 nanoparticles
Číslo projektu: GBP503/12/G147 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: NANOCON 2014, 6th International Conference, ISBN 978-80-87294-53-6
Poznámka: Související webová stránka: http://hdl.handle.net/11104/0246107
Práva: Dílo je chráněno podle autorského zákona č. 121/2000 Sb.

Instituce: Ústav chemických procesů AV ČR (web)
Původní záznam: http://hdl.handle.net/11104/0246107

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-181164


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav chemických procesů
Konferenční materiály > Příspěvky z konference