Počet záznamů: 1

A facile synthesis of mesoporous crystalline tin oxide films involving a base-triggered formation of sol–gel building blocks

  1. 1.
    0358448 - UFCH-W 2012 RIV GB eng J - Článek v odborném periodiku
    Fried, D. I. - Ivanova, A. - Müller, V. - Rathouský, Jiří - Smarsly, B. M. - Fattakhova-Rohlfing, D.
    A facile synthesis of mesoporous crystalline tin oxide films involving a base-triggered formation of sol–gel building blocks.
    Nanoscale. Roč. 3, č. 3 (2011), s. 1234-1239 ISSN 2040-3364
    Grant CEP: GA ČR GA104/08/0435; GA AV ČR KAN100400702
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: physical chemistry * evaporation-induced self-assembly * crystalline thin films
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 5.914, rok: 2011

    We have developed a new facile procedure for manufacturing crystalline thin films of SnO2 with a uniform mesoporous architecture and full crystallinity of the walls. The procedure is based on the evaporation-induced self-assembly (EISA) of prehydrolyzed tin oxide precursor directed by a commercially available Pluronic polymer. The formation of the tin oxide precursor, which can be self-assembled into a mesoporous structure, is achieved by an addition of ammonium hydroxide to a tin tetrachloride solution. The relative concentration of ammonium hydroxide as well as the duration and temperature of the hydrolysis reaction influence significantly the properties of hydrolyzed tin oxide species and the mesostructure assembled from them. The films coated from these precursor solutions and calcined at 300 to 400 °C exhibit a well-developed worm-like porosity with a wall to wall distance of ca. 18 nm, a surface area of up to 50 cm2 cm−2 (corresponding to 55±5 m2 g−1), and high crystallinity.
    Trvalý link: http://hdl.handle.net/11104/0196490