Conductivity study of Zeolitic Imidazolate Frameworks, Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks, and mixed matrix membranes of Polyetherimide/ Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks for proton conducting applications
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Otros documentos de la autoría: Vega, J.; Andrio, Andreu; Lemus, A. A.; Del Castillo, Luis F.; Compañ, Vicente
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Título
Conductivity study of Zeolitic Imidazolate Frameworks, Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks, and mixed matrix membranes of Polyetherimide/ Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks for proton conducting applicationsFecha de publicación
2017Editor
ElsevierCita bibliográfica
VEGA, J.; ANDRIO BALADO, Andreu; LEMUS, A. A.; DEL CASTILLO, LUIS F.; COMPAÑ MORENO, Vicente. (2017). Conductivity study of Zeolitic Imidazolate Frameworks, Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks, and mixed matrix membranes of Polyetherimide/ Tetrabutylammonium hydroxide doped with Zeolitic Imidazolate Frameworks for proton conducting applications. Electrochimica Acta, v. 258, p. 153-166Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S001346861732217XVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
ZIF-8 (Z8), ZIF-67 (Z67), and ZMix, a Zn/Co bimetallic zeolitic imidazolate framework (ZIF), were syn-
thesized and doped with tetrabutylammonium hydroxide (ZIFsT). The obtained powders were used as
fillers for ... [+]
ZIF-8 (Z8), ZIF-67 (Z67), and ZMix, a Zn/Co bimetallic zeolitic imidazolate framework (ZIF), were syn-
thesized and doped with tetrabutylammonium hydroxide (ZIFsT). The obtained powders were used as
fillers for polyetherimide (PEI) at a concentration of 20 wt %. The presence of the three ZIFsT in the
polymeric matrix enhanced proton transport relative to that observed for PEI or ZIFs alone. The real and
imaginary parts of the complex conductivity were obtained for each of the six materials, and the tem-
perature and frequency dependence of the real part was analyzed. The results at different temperatures
show that the dc-conductivity are about three orders of magnitude higher for the doped ZIFsT materials
than for the PEI/ZIFsT membranes. In addition, the conductivity of the PEI/ZIFsT membranes increases
five or six times when the temperature is changed from 25
Cto55
C. For these materials, the con-
ductivity measurements have a linear dependency with frequency, which allowed for the creation of a
master curve. It was also found that the PEI/ZMixT membrane activation energy is four times smaller
than that of PEI/Z8T membranes and five times smaller than that of PEI/Z67T. Similarly, the real and
imaginary parts of the complex dielectric constant were obtained, and the tan
d
was evaluated. Using this
value, the diffusion coefficient and the charge carrier density were obtained. A discussion of the proton
transport mechanism through the membrane is given, and a comparison of this work with those on
similar electrolyte membranes is included [-]
Publicado en
Electrochimica Acta (2017), v. 258Proyecto de investigación
1) ENE/2015-69203-R project, granted by the Ministerio de Economía y Competitividad (MINECO), Spain; 2) National Mexican Council for Science and Technology for the scholarships of Ph.D. No. 356825 and mixed scholarship 2015 e MZO2016-mobility in the foreigner granted to Jesus Vega Moreno registered scholarship holder num- ber 256015; 3) CONACYT Program for the fellowship at the Universidad Polit ecnica de Valencia (UPV) and Universitat Jaume I that PhD student Jesús Vega used to carry out the experi- mental studies of this work. DGAPA-PAPIIT IG-100315;Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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