Preparation and conductivity of solid high-proton conductor silica gels containing 12-tungstogermanic heteropoly acid

Authors
Wu, QY Tao, SW Lin, HH Meng, GY
Citation
Qy. Wu et al., Preparation and conductivity of solid high-proton conductor silica gels containing 12-tungstogermanic heteropoly acid, MAT SCI E B, 68(3), 2000, pp. 161-165
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
68
Issue
3
Year of publication
2000
Pages
161 - 165
Database
ISI
SICI code
0921-5107(20000103)68:3<161:PACOSH>2.0.ZU;2-P
Abstract
Silica gels containing 12-tungstogermanic acid were prepared by means of so l-gel method. Infrared spectra and XRD patterns revealed that the Keggin st ructure characteristic of GeW12O404- anion was present in the silica gel sk eleton. The regularity of the change of the characteristic peaks in the inf rared spectra was investigated. The silica gels exhibited considerably high -proton conductivity, and the conductivity increased with increasing 12-tun gstogermanic acid content. The proton conductivity of gel containing 71 wt% 12-tungstogermanic acid is 4.00 x 10(-3) s cm(-1) at room temperature (16 degrees C). (C) 2000 Elsevier Science S.A. All rights reserved.