Please use this identifier to cite or link to this item: doi:10.22028/D291-24595
Title: Conducting membranes and coatings made from redispersable nanoscaled crystalline SnO2:Sb particles
Author(s): Goebbert, Christian
Aegerter, Michel A.
Burgard, Detlef
Nass, Rüdiger
Schmidt, Helmut K.
Language: English
Year of Publication: 1998
OPUS Source: Nanostructured powders and their industrial applications : symposium held April 13-15, 1998, San Francisco, California, U.S.A. / eds.: Gregory Beaucage ... - Warrendale, Pa. : Materials Research Society, 1998. — (Materials Research Society symposia proceedings ; 520), S. 293-304
SWD key words: Membran
Wässrige Lösung
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: Inorganic membranes prepared by the sol gel method are promising candidates for use as filters in separation processes. Conducting supported membranes and coatings have been produced from redispersable nanoscaled crystalline Sb-doped SnO 2 powders with a Sb content up to 5 mole % (with respect to Sn). The crystalline particles are monosized (≅4 nm) and fully redispersable in aqueous solution at pH ≥ 8 with a solid content up to 70 wt. %. By thermal treatment at different temperatures and times, the pore size diameter of the material can be adjusted from 4 to 20 nm with a very narrow pore size distribution (-±1 nm) and a total porosity of 63 %, practically independent of the sintering parameters. Uniaxial pressed substrates present similar characteristics with however larger pore size distribution (±5 nm) and 80 % total porosity. Their resistance decreases with sintering temperature and time down to 4 Ω (800 °C, 8 h). Fully dispersed aqueous solutions of the powder (25 wt. %) were used to prepare transparent conducting coatings on glass or ceramics by spin-coating. After thermal treatment (1 hour at 550 °C) single layers 200 nm thick exhibited a typical specific electrical resistance p = 2.5-10.2 Ωcm with transmission in the visible range measured against air of 90 %
Link to this record: urn:nbn:de:bsz:291-scidok-29044
ISBN: 1-558-99426-2
Date of registration: 18-Jun-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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