Počet záznamů: 1
Photocatalytic properties of aqueous systems containing TiO2 nanoparticles
- 1.
SYSNO ASEP 0359747 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Photocatalytic properties of aqueous systems containing TiO2 nanoparticles Tvůrce(i) Paušová, Š. (CZ)
Krýsa, J. (CZ)
Jirkovský, Jaromír (UFCH-W) RID
Forano, C. (FR)
Prevot, V. (FR)
Mailhot, G. (FR)Zdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 161, č. 1 (2011), s. 140-146Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova TiO2 nanoparticles ; photocatalysis ; aging Vědní obor RIV CG - Elektrochemie CEP 1M0577 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000287730900025 DOI 10.1016/j.cattod.2010.11.001 Anotace This work describes the aging of aqueous colloidal TiO2 nanoparticles at different temperatures and pH values. Emphasis was particularly given to the behaviour in the alkaline region, since this has not yet been properly reported. Aging of colloidal TiO2 suspensions has previously been investigated using spectroscopic methods (band gap energy determination) and a dynamic light scattering method (particle size determination). The photocatalytic activity, representing the most important property of TiO2 nanoparticles, was determined through the quantum yield of 4-chlorophenol degradation. It was found that the size of acidic colloidal TiO2 particles depends on the storing temperature; lower temperature leads to a small increase in particle size. The process of aging of TiO2 nanoparticles consists in slow re-crystallization that leads to slightly larger particles, and it seems that this process is faster at higher temperatures. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2012
Počet záznamů: 1