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Designing ultrathin film composite membranes: Importance of a gutter layer

  • Moon Kattula
  • , Koushik Ponnuru
  • , Ioannis Karampelas
  • , Lingxiang Zhu
  • , Weiguang Jia
  • , Ting Wang
  • , Haiqing Lin
  • , Edward P. Furlani
  • SUNY Buffalo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The performance of composite membranes that utilize an ultra- Thin selective layer (<100 nm) can be improved with the introduction of an intermediate gutter layer (<100 nm) positioned between the selective layer and porous support. the properties of the gutter layer can be carefully chosen to enhance overall membrane performance, i.e., high permeance and high selectivity. however, the experimental determination of optimum gutter layer properties is very challenging, if not impossible, and modeling is needed to guide the selection process. in this presentation we address this need using a computational model to determine the effects of the gutter layer thickness and permeability on membrane performance. we show that a layer thickness of 1-2 times of the pore radius of the porous support yields the maximum improvement in permeance without significantly decreasing selectivity.

Original languageEnglish
Title of host publicationNSTI
Subtitle of host publicationMaterials for Energy, Efficiency and Sustainability - TechConnect Briefs 2015
EditorsBart Romanowicz, Matthew Laudon
PublisherTaylor and Francis Inc.
Pages263-266
Number of pages4
ISBN (Electronic)9781498747288
StatePublished - 2015
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference - Washington, United States
Duration: Jun 14 2015Jun 17 2015

Publication series

NameNSTI: Advanced Materials - TechConnect Briefs 2015
Volume2

Conference

Conference10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference
Country/TerritoryUnited States
CityWashington
Period06/14/1506/17/15

Keywords

  • Computational model
  • Gutter layer
  • Membrane design
  • Permeancc. selectivity
  • Thin film membrane

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