The impact of hydrophobic coating on the performance of carbon nanotube bucky-paper membranes in membrane distillation

Ludovic Dumée; Jos L. Campbell; Kallista Sears; J. Schütz; Niall Finn; Mikel Duke; Stephen Gray

doi:10.1016/j.desal.2011.02.046

The impact of hydrophobic coating on the performance of carbon nanotube bucky-paper membranes in membrane distillation

Ludovic Dumée, Jos L. Campbell, Kallista Sears, J. Schütz, Niall Finn, Mikel Duke, Stephen Gray

Chemical and Petroleum Engineering

Research output: Contribution to journal › Article › peer-review

92 Scopus citations

Abstract

Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties.

Original language	British English
Pages (from-to)	64-67
Number of pages	4
Journal	Desalination
Volume	283
DOIs	https://doi.org/10.1016/j.desal.2011.02.046
State	Published - 2011

Keywords

Carbon nanotube bucky-paper
Desalination
Membrane distillation
Poly(tetra fluoro ethylene) composite

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.desal.2011.02.046

Cite this

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title = "The impact of hydrophobic coating on the performance of carbon nanotube bucky-paper membranes in membrane distillation",

abstract = "Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties.",

keywords = "Carbon nanotube bucky-paper, Desalination, Membrane distillation, Poly(tetra fluoro ethylene) composite",

author = "Ludovic Dum{\'e}e and Campbell, {Jos L.} and Kallista Sears and J. Sch{\"u}tz and Niall Finn and Mikel Duke and Stephen Gray",

note = "Funding Information: The authors would like to acknowledge RMIT for access to their sputtering facilities and to Dr. Yen Truong for granting us the access to both porometer and goniometer. We thank the CSIRO Materials Science and Engineering and Victoria University for the financial support. They also thank Sergey Rubanov from Bio 21 Institute for his expert advice on SEM microscopy. ",

year = "2011",

doi = "10.1016/j.desal.2011.02.046",

language = "British English",

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pages = "64--67",

journal = "Desalination",

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T1 - The impact of hydrophobic coating on the performance of carbon nanotube bucky-paper membranes in membrane distillation

AU - Dumée, Ludovic

AU - Campbell, Jos L.

AU - Sears, Kallista

AU - Schütz, J.

AU - Finn, Niall

AU - Duke, Mikel

AU - Gray, Stephen

N1 - Funding Information: The authors would like to acknowledge RMIT for access to their sputtering facilities and to Dr. Yen Truong for granting us the access to both porometer and goniometer. We thank the CSIRO Materials Science and Engineering and Victoria University for the financial support. They also thank Sergey Rubanov from Bio 21 Institute for his expert advice on SEM microscopy.

PY - 2011

Y1 - 2011

N2 - Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties.

AB - Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties.

KW - Carbon nanotube bucky-paper

KW - Desalination

KW - Membrane distillation

KW - Poly(tetra fluoro ethylene) composite

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DO - 10.1016/j.desal.2011.02.046

M3 - Article

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SN - 0011-9164

VL - 283

SP - 64

EP - 67

JO - Desalination

JF - Desalination

ER -

The impact of hydrophobic coating on the performance of carbon nanotube bucky-paper membranes in membrane distillation

Abstract

Keywords

UN SDGs

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