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Effect of chemical oxidation on the gas sensing properties of multi-walled carbon nanotubes

  • M. Xu
  • , Z. Sun
  • , Q. Chen
  • , B. K. Tay
  • Nanyang Technological University
  • East China Normal University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The effect of chemical oxidation on the gas sensing properties of multi-walled carbon nanotubes (MWNT) is presented in this paper. The MWNT was chemically oxidized in a mixture of concentrated sulfuric and nitric acids. The oxidation time was varied from 4 to 12 hours. X-ray photoelectron spectroscopy (XPS) was used to study effect on the chemical composition of the nanotube surface. The MWNT was deposited onto gas sensor substrate by drop coating method. The gas sensing properties of samples with different oxidation time for NO2 and NH3 were investigated at room temperature. Comparing with the as-obtained MWNT, the gas sensitivity of functionalized MWNT was greatly increased for both NO2 and NH3.

源语言英语
主期刊名2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
130-133
页数4
DOI
出版状态已出版 - 2008
活动2008 2nd IEEE International Nanoelectronics Conference, INEC 2008 - Shanghai, 中国
期限: 24 3月 200827 3月 2008

出版系列

姓名2008 2nd IEEE International Nanoelectronics Conference, INEC 2008

会议

会议2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
国家/地区中国
Shanghai
时期24/03/0827/03/08

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