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SUMMARY:Ions and molecules in membranes and nanochannels:  modelling and d
 evelopment of new materials - Prof. Vyacheslav Freger
DTSTART:20230809T150000Z
DTEND:20230809T160000Z
UID:TALK203932@talks.cam.ac.uk
CONTACT:Alexei Lapkin
DESCRIPTION:Ion separations in membranes are at heart of several most succ
 essful membrane-based technologies\, such as desalination and water purifi
 cation using reverse osmosis (RO) and nanofiltration (NF) and electro-memb
 rane processes such as fuel cells (FC) and electrolysis. These processes a
 re also used to reject or block neutral molecules\, e.g.\, contaminants in
  NF and fuel in FCs. Yet\, despite commercial success and vast empirical k
 nowledge\, uptake and transport of ions and molecules in these\, mostly po
 lymeric membranes still puzzle membrane scientists as widely adopted class
 ical models often fail to match experimental data. \nIn this talk\, we out
 line a unifying view on selectivity of polymeric membranes as well as nano
 channels towards ions and non-electrolytes\, which centers on membrane die
 lectric properties as key physical characteristics that helps maximize sel
 ectivity\, yet also complicates the physical picture. Subject to time cons
 traints\, I will also present a few examples where fundamental understandi
 ng helps and guides development of new membrane materials for NF and FC.\n
LOCATION:Department of Chemical Engineering and Biotechnology\, West Cambr
 idge Site\, LT1
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