Preparation and Transport Performances of High-Density, Aligned Carbon Nanotube Membranes

Lei Zhang; Bin Zhao; Chuan Jiang; Junhe Yang; Guangping Zheng

doi:10.1186/s11671-015-0970-8

Preparation and Transport Performances of High-Density, Aligned Carbon Nanotube Membranes

Lei Zhang, Bin Zhao, Chuan Jiang, Junhe Yang, Guangping Zheng

Research output: Journal article publication › Journal article › Academic research › peer-review

27 Citations (Scopus)

Abstract

We report a simple and effective method for the preparation of high-density and aligned carbon nanotube (CNT) membranes. The CNT arrays were prepared by water-assisted chemical vapor deposition (CVD) and were subsequently pushed over and stacked into dense membranes by mechanical rolling. It was demonstrated that various gases and liquids, including H₂, He, N₂, O₂, Ar, water, ethanol, hexane, and kerosene, could effectively pass through the aligned carbon nanotube membranes. The membranes exhibited different selections on different gases, indicating that there was a separation potential for the gas mixtures. The selectivities (H₂ relative to other gases) of H₂/He, H₂/N₂, H₂/O₂, and H₂/Ar were found to be lower than that of the ideal Knudsen model. For pure water, the permeability was measured to be 3.23 ± 0.05 ml·min⁻¹·cm⁻² at 1 atm, indicating that the CNT membranes were promising for applications in liquid filtration and separation.

Original language	English
Article number	266
Journal	Nanoscale Research Letters
Volume	10
Issue number	1
DOIs	https://doi.org/10.1186/s11671-015-0970-8
Publication status	Published - 24 Dec 2015

Keywords

Carbon nanotubes
Gas transport
Liquid transport
Nano-filtration membrane
Separation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

More information

10.1186/s11671-015-0970-8

http://hdl.handle.net/10397/29139

Cite this

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title = "Preparation and Transport Performances of High-Density, Aligned Carbon Nanotube Membranes",

abstract = "We report a simple and effective method for the preparation of high-density and aligned carbon nanotube (CNT) membranes. The CNT arrays were prepared by water-assisted chemical vapor deposition (CVD) and were subsequently pushed over and stacked into dense membranes by mechanical rolling. It was demonstrated that various gases and liquids, including H2, He, N2, O2, Ar, water, ethanol, hexane, and kerosene, could effectively pass through the aligned carbon nanotube membranes. The membranes exhibited different selections on different gases, indicating that there was a separation potential for the gas mixtures. The selectivities (H2 relative to other gases) of H2/He, H2/N2, H2/O2, and H2/Ar were found to be lower than that of the ideal Knudsen model. For pure water, the permeability was measured to be 3.23 ± 0.05 ml·min−1·cm−2 at 1 atm, indicating that the CNT membranes were promising for applications in liquid filtration and separation.",

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AU - Zhang, Lei

AU - Zhao, Bin

AU - Jiang, Chuan

AU - Yang, Junhe

AU - Zheng, Guangping

PY - 2015/12/24

Y1 - 2015/12/24

N2 - We report a simple and effective method for the preparation of high-density and aligned carbon nanotube (CNT) membranes. The CNT arrays were prepared by water-assisted chemical vapor deposition (CVD) and were subsequently pushed over and stacked into dense membranes by mechanical rolling. It was demonstrated that various gases and liquids, including H2, He, N2, O2, Ar, water, ethanol, hexane, and kerosene, could effectively pass through the aligned carbon nanotube membranes. The membranes exhibited different selections on different gases, indicating that there was a separation potential for the gas mixtures. The selectivities (H2 relative to other gases) of H2/He, H2/N2, H2/O2, and H2/Ar were found to be lower than that of the ideal Knudsen model. For pure water, the permeability was measured to be 3.23 ± 0.05 ml·min−1·cm−2 at 1 atm, indicating that the CNT membranes were promising for applications in liquid filtration and separation.

AB - We report a simple and effective method for the preparation of high-density and aligned carbon nanotube (CNT) membranes. The CNT arrays were prepared by water-assisted chemical vapor deposition (CVD) and were subsequently pushed over and stacked into dense membranes by mechanical rolling. It was demonstrated that various gases and liquids, including H2, He, N2, O2, Ar, water, ethanol, hexane, and kerosene, could effectively pass through the aligned carbon nanotube membranes. The membranes exhibited different selections on different gases, indicating that there was a separation potential for the gas mixtures. The selectivities (H2 relative to other gases) of H2/He, H2/N2, H2/O2, and H2/Ar were found to be lower than that of the ideal Knudsen model. For pure water, the permeability was measured to be 3.23 ± 0.05 ml·min−1·cm−2 at 1 atm, indicating that the CNT membranes were promising for applications in liquid filtration and separation.

KW - Carbon nanotubes

KW - Gas transport

KW - Liquid transport

KW - Nano-filtration membrane

KW - Separation

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U2 - 10.1186/s11671-015-0970-8

DO - 10.1186/s11671-015-0970-8

M3 - Journal article

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JF - Nanoscale Research Letters

IS - 1

M1 - 266

ER -

Preparation and Transport Performances of High-Density, Aligned Carbon Nanotube Membranes

Abstract

Keywords

ASJC Scopus subject areas

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