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SUMMARY:Selectivity via transport energy barriers in Practical Graphene Ox
 ide membranes
DTSTART:20260821T160000
DTEND:20260821T170000
DTSTAMP:20261008T004353Z
UID:f0e78c28244176a21c9e0e73f5d0ffe6d2d64065723223751606168f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Mainak Majumder\nAbstract :\nMembrane-based separation t
 echnologies have many advantages over traditional separation methods such 
 as adsorption\, and distillation in terms of energy- and cost-efficiency a
 nd modular deployment of technology. In practice\, these advantages can be
  meaningfully harnessed only if advanced membranes with properties such as
  high permeance\, tailorable selectivity [1-2]\, chlorine\, pH and solvent
  resistance [3-4]\, low-fouling characteristics [1]\, long-term stability 
 under operational conditions [5\,6] alongside green and sustainable manufa
 cturability [6] are demonstrated. In the last 8-10 years\, our research gr
 oup has taken rapid strides to realize these properties in membranes made 
 from graphene-oxide\, including scaled-up manufacturing in roll-to-roll ap
 proaches.\nRecently\, our efforts have been focused on tailoring the inter
 pore energy barriers in the graphene oxide nanochannels to impart selectiv
 ity which are non-classical\, determined primarily by interactions from co
 nfined molecules. With this philosophy we have been to separate short-chai
 n per- and polyfluoroalkyl substances and concentrate them with efficienci
 es higher than what commercial membranes are capable of [7]. Confined amin
 o acids inside the nanochannels\, another example of transport modifiers\,
  can create environments where ion-ion selectivity can be studied. [8] In 
 this talk\, I will summarize this journey reflecting also on industrial de
 ployment of spiral wound membrane modules conducted in close collaboration
  with industry partners and water utility companies.\n\n[1] Akbari et al.\
 , Nat Commun 7\, 10891 (2016)\, [2] Sheath et al.\, Phil. Trans. R. Soc.
  A.374: 20150028\, [3] Akbari et al.\, ACS Appl. Mater. Interfaces 2018\,
  10\, 2\, 2067–2074\, [4] Meragawi et al.\, ACS Appl. Bio Mater. 2020\,
  3\, 1\, 584–592\, [5] Mergawai et al.\, J. Mater. Chem. A\, 2020\,8\, 2
 4800-24811\, [6] Meragawi et al.\, ACS Sustainable Chem. Eng. 2021\, 9\, 
 32\, 10846–10856 [7] Mahofa et al.\, ACS Nano.\, 2025\,19\,14742−14755
  [8] Afnas Villayatteri et al.\, Nano Letters\, 2025\, 25\,15322−15330\n
 \n \n Bio :\nMainak Majumder is a professor in the Department of Mechanic
 al and Aerospace Engineering of Monash University\, where he has been sinc
 e 2010. He joined Monash after a two-year postdoctoral stint at Rice Unive
 rsity\, USA with Professors P.M. Ajayan and Matteo Pasquali. He earned a 
 PhD with Professor Bruce J. Hinds at the University of Kentucky\, USA stud
 ying mass and molecule transport in aligned carbon nanotube membranes. Cur
 rently\, he is the Director of the Australian Research Council’s Researc
 h Hub on Advanced Manufacturing with 2D Materials (https://am2d.org)\, whi
 ch is a $9M initiative of the Australian government with local industries 
 to support commercialization of Graphene-enabled technologies.  He is als
 o the Senior Advisor of the Monash Energy Institute (https://www.monash.ed
 u/energy-institute)\, a local organization dedicated to maximising the imp
 act of energy research at Monash University. \n 
LOCATION:Tseuzier https://plan.epfl.ch/?room==I17%204%20K2
STATUS:CONFIRMED
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