Počet záznamů: 1

Ultrasmall Titania Nanocrystals and Their Direct Assembly into Mesoporous Structures Showing Fast Lithium Insertion

  1. 1.
    0348372 - UFCH-W 2011 RIV US eng J - Článek v odborném periodiku
    Szeifert, J. M. - Feckl, J. M. - Fattakhova-Rohlfing, D. - Liu, Y. - Kalousek, Vít - Rathouský, Jiří - Bein, T.
    Ultrasmall Titania Nanocrystals and Their Direct Assembly into Mesoporous Structures Showing Fast Lithium Insertion.
    Journal of the American Chemical Society. Roč. 132, č. 36 (2010), s. 12605-12611 ISSN 0002-7863
    Grant CEP: GA ČR GA104/08/0435
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: nanocrystals * mesoporous structures * TiCl4
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 9.019, rok: 2010

    Ultrasmall and highly soluble anatase nanoparticles were synthesized from TiCl4 using tert-butyl alcohol as a new reaction medium. This synthetic protocol widens the scope of nonaqueous sol-gel methods to TiO2 nanoparticles of around 3 nm with excellent dispersibility in ethanol and tert-butanol. Microwave heating was found to enhance the crystallinity of the nanoparticles and to drastically shorten the reaction time to less than 1 h at temperatures as low as 50 degrees C. The extremely small size of the nanoparticles and their dispersibility make it possible to use commercial Pluronic surfactants for evaporation-induced self-assembly of the nanoparticulate building blocks into periodic mesoporous structures. A solution of particles after synthesis can be directly used for preparation of mesoporous films without the need for particle separation. The mesoporous titania coatings fabricated using this one-pot procedure are crystalline and exhibit high surface areas of up to 300 m(2)/g.
    Trvalý link: http://hdl.handle.net/11104/0188923