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Influence of external electrolyte on ion exchange in Nafion membranes

DSpace at IIT Bombay

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Field Value
 
Title Influence of external electrolyte on ion exchange in Nafion membranes
 
Creator IYER, ESS
DATTA, A
 
Subject STATE PROTON-TRANSFER
FUEL-CELL MEMBRANES
SELECTIVE ENHANCEMENT
CATION-EXCHANGE
SLOW DYNAMICS
COUNTER-IONS
TRANSPORT
2-(2'-PYRIDYL)BENZIMIDAZOLE
EQUILIBRIUM
DIFFUSION
 
Description The influence of the electrolyte on the cation exchange process of Nafion membranes has been studied using 2-(2'-pyridyl) benzimidazole (2PBI) as a fluorescent probe. The relative fluorescence intensities at 360 and 470 nm of this molecule are found to be different in Na+-exchanged Nafion membranes. The relative contributions of the two phototautomers emitting at these two wavelengths is found to depend on the method of incorporation of Na+ ion as well as the fluorophore. The fluorescence data, in conjunction with the lifetimes, are used to develop a model to rationalize the role of co-ions present in the electrolyte on the ion exchange process of Nafion.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-10-16T12:53:08Z
2014-10-16T12:53:08Z
2012
 
Type Article
 
Identifier RSC ADVANCES, 2(21)8050-8054
http://dx.doi.org/10.1039/c2ra20871g
http://dspace.library.iitb.ac.in/jspui/handle/100/15596
 
Language en