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

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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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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, 85721, USA

    Lu Wang, Ziran Wu & Hao Xin

  2. Department of Physics, University of Arizona, Tucson, AZ, 85721, USA

    Lu Wang, Ziran Wu & Hao Xin

  3. Department of Materials Science and Engineering, University of Arizona, Tucson, AZ, 85721, USA

    Binh Duong & Supapan Seraphin

  4. Department of Chemistry and Biochemistry, Ohio University, Athens, OH, 45701, USA

    Yao Xiong

  5. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou, Jiangsu, 215125, P.R. China

    Liwei Chen

Authors
  1. Lu Wang
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  2. Yao Xiong
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  3. Ziran Wu
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  4. Binh Duong
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  6. Hao Xin
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  7. Liwei Chen
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Correspondence to Hao Xin or Liwei Chen.

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Wang, L., Xiong, Y., Wu, Z. et al. Demetalization of single-walled carbon nanotube thin films with microwave irradiation. Appl. Phys. A 102, 401–406 (2011). https://doi.org/10.1007/s00339-010-6069-2

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  • DOI: https://doi.org/10.1007/s00339-010-6069-2

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