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Niobium-Doped Titania Nanoparticles: Synthesis and Assembly into Mesoporous Films and Electrical Conductivity
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SYSNO ASEP 0348369 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Niobium-Doped Titania Nanoparticles: Synthesis and Assembly into Mesoporous Films and Electrical Conductivity Tvůrce(i) Liu, Y. (DE)
Szeifert, J. M. (DE)
Feckl, J. M. (DE)
Mandlmeier, B. (DE)
Rathouský, Jiří (UFCH-W) RID, ORCID
Heyden, O. (DE)
Fattakhova-Rohlfing, D. (DE)
Bein, T. (DE)Zdroj.dok. ACS Nano. - : American Chemical Society - ISSN 1936-0851
Roč. 4, č. 9 (2010), s. 5373-5381Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova nanoparticle synthesis ; nanoparticle self-assembly ; conducting Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GA104/08/0435 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000282121000052 DOI 10.1021/nn100785j Anotace Crystalline niobium-doped titania nanoparticles were synthesized via solvothermal procedures using tert-butyl alcohol as a novel reaction medium, and their assembly into mesoporous films was investigated. The solvothermal procedure enables the preparation of crystalline doped and undoped nonagglomerated titania nanoparticles, whose size can be controlled from 4 to 15 nm by changing the reaction temperature and time. The anatase lattice of these particles can incorporate more than 20 mol % of Nb ions. The nanoparticles can be easily dispersed at high concentrations in THF to form stable colloidal suspensions and can be assembled into uniform porous mesostructures directed by the commercial Pluronic block copolymer F127. The resulting mesoporous films show a regular mesostructure with ad spacing of about 17 nm, a uniform pore size of about 10 nm with crystalline walls, a high porosity of 43%, and a large surface area of 190 m(2) cm(-3). Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2011
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