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

被引：16

作者：

Iriarte, Delfina ^{[1
,5
]}

Andrada, Heber ^{[1
,3
,4
,5
]}

Ochoa, Santiago A. Maldonado ^{[1
,5
]}

Silva, O. Fernando ^{[2
,6
]}

Chavez, Fabian Vaca ^{[1
,5
]}

Carreras, Alejo ^{[1
,5
]}

机构：

[1] Univ Nacl Cordoba, Fac Matemat Astron Fis & Computac, Cordoba, Argentina

[2] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Quim Organ, Cordoba, Argentina

[3] Univ Nacl Rio Cuarto, Dept Quim, Agencia Postal 3,CP X5804BYA,Ruta Nacl 36,km 601, Rio Cuarto, Cordoba, Argentina

[4] Univ Nacl Rio Cuarto, Inst Desarrollo Agroind & Salud IDAS, Postal 3,CP X5804BYA,Ruta Nacl 36,km 601, Rio Cuarto, Cordoba, Argentina

[5] Inst Fis Enr Gaviola IFEG, CONICET, Cordoba, Argentina

[6] Inst Invest Fis Quim Cordoba INFIQC, CONICET, Cordoba, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 49期

关键词：

Nafion membrane; Acid pretreatment; NMR; Proton conductivity; PROTON CONDUCTIVITY; MOLECULAR-DYNAMICS; MECHANICAL-PROPERTIES; TRANSPORT-PROPERTIES; WATER-SORPTION; ION-EXCHANGE; TEMPERATURE; PRETREATMENT; SIMULATION; DEPENDENCE;

D O I：

10.1016/j.ijhydene.2022.04.246

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：21253 / 21260

页数：8

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