Open AccessNano-ion-exchangers - a new class of reactive materials
Author(s) -
А. М. Долгоносов,
Р. Х. Хамизов,
N. K. Kolotilina
Publication year - 2018
Publication title -
sorbcionnye i hromatografičeskie processy
Language(s) - English
Resource type - Journals
ISSN - 1680-0613
DOI - 10.17308/sorpchrom.2018.18/607
Subject(s) - nano , ion , ion exchange , materials science , hydrosol , polymer , chemical engineering , ionic bonding , cationic polymerization , nanoparticle , sorption , chemistry , nanotechnology , chemical physics , adsorption , organic chemistry , composite material , polymer chemistry , engineering
Nano-sized particles of functional polymers i.e. nano-ion-exchangers (NIEX), are unusual objects
which simultaneously behave as the hyper-charged ions and the solid ion exchangers. Due to similar charges, they form very stable colloidal systems. This paper is devoted to theoretical and practical study of the proper- ties of nano-exchangers, methods for their preparation, the technique of experiments being practically un- known, and the opportunities for their application.
The results of dynamic experiments are given for sorption of nano-exchangers and the ions of back- ground solutions on the beds of macro-particles of usual cationic and anionic resins. It is shown how to ob- tain the NIEX hydrosols with the desired ionic composition, and the concept of the standard state hydrosol is defined. The possibility for solid-phase exchange of counter ions between contacting particles of the same polarity is demonstrated.
The possibilities and advantages of using nano-ion-exchangers in chemical analysis are demonstrat- ed by different examples: preparation of separating phases for ion chromatography, application as modifier in capillary electrophoresis and using in photo-luminescence. The prospects of nano-ion-exchangers for drug delivery are also shown.