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Ultrasmall Titania Nanocrystals and Their Direct Assembly into Mesoporous Structures Showing Fast Lithium Insertion
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SYSNO ASEP 0348372 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ultrasmall Titania Nanocrystals and Their Direct Assembly into Mesoporous Structures Showing Fast Lithium Insertion Author(s) Szeifert, J. M. (DE)
Feckl, J. M. (DE)
Fattakhova-Rohlfing, D. (DE)
Liu, Y. (DE)
Kalousek, Vít (UFCH-W)
Rathouský, Jiří (UFCH-W) RID, ORCID
Bein, T. (DE)Source Title Journal of the American Chemical Society. - : American Chemical Society - ISSN 0002-7863
Roč. 132, č. 36 (2010), s. 12605-12611Number of pages 7 s. Language eng - English Country US - United States Keywords nanocrystals ; mesoporous structures ; TiCl4 Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA104/08/0435 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000282074200022 DOI 10.1021/ja101810e Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
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