Demetalization of single-walled carbon nanotube thin films with microwave irradiation

Lu Wang; Yao Xiong; Ziran Wu; Binh Duong; Supapan Seraphin; Hao Xin; Liwei Chen

doi:10.1007/s00339-010-6069-2

Demetalization of single-walled carbon nanotube thin films with microwave irradiation

Lu Wang, Yao Xiong, Ziran Wu, Binh Duong, Supapan Seraphin, Hao Xin, Liwei Chen

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

6 Scopus citations

Abstract

The microwave irradiation effects on purified HiPCO and CoMoCat single-walled carbon nanotube (SWNT) thin films are investigated. The surface conductivities of the SWNT films are extracted from the measured THz transmission coefficients to provide a direct indication of the metallic content in the films. The observed drastic conductivity decrease indicates a significant metallic content reduction after the microwave irradiation. Two different laser excitations are applied for Raman spectroscopy to reveal the response of different nanotube species. The Raman spectra of both HiPCO and CoMoCat thin films confirm the decrease of metallic carbon nanotubes. The observed microwave-induced effects may potentially lead to a convenient scheme for demetalization of single-walled carbon nanotube mixtures.

Original language	English (US)
Pages (from-to)	401-406
Number of pages	6
Journal	Applied Physics A: Materials Science and Processing
Volume	102
Issue number	2
DOIs	https://doi.org/10.1007/s00339-010-6069-2
State	Published - Feb 2011

ASJC Scopus subject areas

General Chemistry
General Materials Science

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title = "Demetalization of single-walled carbon nanotube thin films with microwave irradiation",

abstract = "The microwave irradiation effects on purified HiPCO and CoMoCat single-walled carbon nanotube (SWNT) thin films are investigated. The surface conductivities of the SWNT films are extracted from the measured THz transmission coefficients to provide a direct indication of the metallic content in the films. The observed drastic conductivity decrease indicates a significant metallic content reduction after the microwave irradiation. Two different laser excitations are applied for Raman spectroscopy to reveal the response of different nanotube species. The Raman spectra of both HiPCO and CoMoCat thin films confirm the decrease of metallic carbon nanotubes. The observed microwave-induced effects may potentially lead to a convenient scheme for demetalization of single-walled carbon nanotube mixtures.",

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AU - Wang, Lu

AU - Xiong, Yao

AU - Wu, Ziran

AU - Duong, Binh

AU - Seraphin, Supapan

AU - Xin, Hao

AU - Chen, Liwei

PY - 2011/2

Y1 - 2011/2

N2 - The microwave irradiation effects on purified HiPCO and CoMoCat single-walled carbon nanotube (SWNT) thin films are investigated. The surface conductivities of the SWNT films are extracted from the measured THz transmission coefficients to provide a direct indication of the metallic content in the films. The observed drastic conductivity decrease indicates a significant metallic content reduction after the microwave irradiation. Two different laser excitations are applied for Raman spectroscopy to reveal the response of different nanotube species. The Raman spectra of both HiPCO and CoMoCat thin films confirm the decrease of metallic carbon nanotubes. The observed microwave-induced effects may potentially lead to a convenient scheme for demetalization of single-walled carbon nanotube mixtures.

AB - The microwave irradiation effects on purified HiPCO and CoMoCat single-walled carbon nanotube (SWNT) thin films are investigated. The surface conductivities of the SWNT films are extracted from the measured THz transmission coefficients to provide a direct indication of the metallic content in the films. The observed drastic conductivity decrease indicates a significant metallic content reduction after the microwave irradiation. Two different laser excitations are applied for Raman spectroscopy to reveal the response of different nanotube species. The Raman spectra of both HiPCO and CoMoCat thin films confirm the decrease of metallic carbon nanotubes. The observed microwave-induced effects may potentially lead to a convenient scheme for demetalization of single-walled carbon nanotube mixtures.

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Demetalization of single-walled carbon nanotube thin films with microwave irradiation

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