Recent developments in carbon nanotube membranes for water purification and gas separation

Kallista Sears, Ludovic Dumée, Jürg Schütz, Mary She, Chi Huynh, Stephen Hawkins, Mikel Duke, Stephen Gray

Research output: Contribution to journalArticleResearchpeer-review

192 Citations (Scopus)

Abstract

Carbon nanotubes (CNTs) are nanoscale cylinders of graphene with exceptional properties such as high mechanical strength, high aspect ratio and large specific surface area. To exploit these properties for membranes, macroscopic structures need to be designed with controlled porosity and pore size. This manuscript reviews recent progress on two such structures: (i) CNT Bucky-papers, a non-woven, paper like structure of randomly entangled CNTs, and (ii) isoporous CNT membranes, where the hollow CNT interior acts as a membrane pore. The construction of these two types of membranes will be discussed, characterization and permeance results compared, and some promising applications presented.

Original languageEnglish
Pages (from-to)127-149
Number of pages23
JournalMaterials
Volume3
Issue number1
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • Bucky-paper
  • Carbon nanotube
  • Filtration
  • Membrane

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