Effect of acid treatment on the physico-chemical properties of Nafion 117 membrane

In this work, the effect on the physico-chemical properties of Nafion 117 membrane due to the treatment with HCl, H2SO4 and HNO3 was studied. Water uptake, crystallinity, proton conductivity and water dynamics were evaluated on treated and non-treated membranes. An increase in the water uptake and conductivity and a decrease in the crystallinity were observed in treated membranes in comparison with the untreated one. The water dynamics, studied by spin-spin NMR relaxometry, suggests that treated membranes have a more uniform channel size distribution. The treatment with HCl and HNO3 showed higher conductivity and water uptake than H2SO4.

Palabras clave: ACID PRETREATMENT , NAFION MEMBRANE , NMR , PROTON CONDUCTIVITY

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)

Identificadores

URI: http://hdl.handle.net/11336/204707

URL: https://www.sciencedirect.com/science/article/pii/S0360319922018626

DOI: http://dx.doi.org/10.1016/j.ijhydene.2022.04.246

Colecciones

Articulos (IDAS)
Articulos de INSTITUTO PARA EL DESARROLLO AGROINDUSTRIAL Y DE LA SALUD

Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA

Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA

Citación

Iriarte, Delfina; Andrada, Heber Eduardo; Maldonado Ochoa, Santiago Agustin; Silva, Oscar Fernando; Vaca Chávez Fornasero, Fabián; et al.; Effect of acid treatment on the physico-chemical properties of Nafion 117 membrane; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 47; 49; 6-2022; 21253-21260

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