NAGIOS: RODERIC FUNCIONANDO

Enhanced Conductivity of Composite Membranes Based on Sulfonated Poly(Ether Ether Ketone) (SPEEK) with Zeolitic Imidazolate Frameworks (ZIFs)

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
23 - Química
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Enhanced Conductivity of Composite Membranes Based on Sulfonated Poly(Ether Ether Ketone) (SPEEK) with Zeolitic Imidazolate Frameworks (ZIFs)

Mostra el registre parcial de l'element

dc.contributor.author	Barjola, Arturo
dc.contributor.author	Escorihuela Fuentes, Jorge
dc.contributor.author	Andrio, Andreu
dc.contributor.author	Giménez, Enrique
dc.contributor.author	Compañ, Vicente
dc.date.accessioned	2019-06-10T13:13:09Z
dc.date.available	2019-06-10T13:13:09Z
dc.date.issued	2018
dc.identifier.citation	Barjola, Arturo Escorihuela Fuentes, Jorge Andrio, Andreu Giménez, Enrique Compañ, Vicente 2018 Enhanced Conductivity of Composite Membranes Based on Sulfonated Poly(Ether Ether Ketone) (SPEEK) with Zeolitic Imidazolate Frameworks (ZIFs) Nanomaterials 8 12 1042
dc.identifier.uri	https://hdl.handle.net/10550/70380
dc.description.abstract	The zeolitic imidazolate frameworks (ZIFs) ZIF-8, ZIF-67, and a Zn/Co bimetallic mixture (ZMix) were synthesized and used as fillers in the preparation of composite sulfonated poly(ether ether ketone) (SPEEK) membranes. The presence of the ZIFs in the polymeric matrix enhanced proton transport relative to that observed for SPEEK or ZIFs alone. The real and imaginary parts of the complex conductivity were obtained by electrochemical impedance spectroscopy (EIS), and the temperature and frequency dependence of the real part of the conductivity were analyzed. The results at different temperatures show that the direct current (dc) conductivity was three orders of magnitude higher for composite membranes than for SPEEK, and that of the SPEEK/ZMix membrane was higher than those for SPEEK/Z8 and SPEEK/Z67, respectively. This behavior turns out to be more evident as the temperature increases: the conductivity of the SPEEK/ZMix was 8.5 x 10-3 S·cm-1, while for the SPEEK/Z8 and SPEEK/Z67 membranes, the values were 2.5 x 10-3 S·cm-1 and 1.6 x 10-3 S3cm-1, respectively, at 120 ºC. Similarly, the real and imaginary parts of the complex dielectric constant were obtained, and an analysis of tan d was carried out for all of the membranes under study. Using this value, the diffusion coefficient and the charge carrier density were obtained using the analysis of electrode polarization (EP).
dc.language.iso	eng
dc.relation.ispartof	Nanomaterials, 2018, vol. 8, num. 12, p. 1042
dc.subject	Compostos organometàl·lics
dc.subject	Electroquímica
dc.title	Enhanced Conductivity of Composite Membranes Based on Sulfonated Poly(Ether Ether Ketone) (SPEEK) with Zeolitic Imidazolate Frameworks (ZIFs)
dc.type	journal article	es_ES
dc.date.updated	2019-06-10T13:13:10Z
dc.identifier.doi	10.3390/nano8121042
dc.identifier.idgrec	133090
dc.rights.accessRights	open access	es_ES