Effects of mixture casting Nafion® with quaternary ammonium bromide salts on the ion-exchange capacity and mass transport in the membranes

摘要: Abstract Nafion® has been used to modify electrodes for a wide variety of electrochemical applications. This research studies how the physical properties are affected by mixture casting with quaternary ammonium bromide salts differing sizes and hydrophobicities. The bromides incorporated into have shown up (6.73±1.49)-fold increase in flux tris(2,2′-bipyridyl) ruthenium(II) (Ru(bpy)32+) through cast (C2H5)4NBr/Nafion® membrane. incorporation can pore size allow sensing large redox moieties, such as erythromycin, which cannot be sensed at Nafion®-modified electrodes. One most startling effects incorporating is loss selectivity upon all tetraalkylammonium bromides. Along this selectivity, number available exchange sites proton membranes decreases hydrophobicity