pH sensitive multiwalled carbon nanotubes

Kyongsoo Lee, Jae Hong Kwon, Seung l. Moon, Woo Sung Cho, Byeong Kwon Ju, Yun-Hi Lee

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The CNTs-based sensors have received considerable attention because of their outstanding properties, such as faster response, higher sensitivity, and lower operating temperature. And we expect that CNTs-based electrochemical sensors offer substantial improvements in the performance of pH sensing device. This letter reports experimental results that demonstrate the pH sensing capability of the multiwalled carbon nanotubes (MWCNTs) film by using the thermal chemical vapor deposition (thermal CVD). It was found that electronic properties of MWCNTs can be changed by the introduction of different pH value solutions. The absorption of the hydroxide in pH buffer solution changes conductivity of the MWCNTs. We observed in situ measurement of electrical conductivity by cycling solution range from acid to base.

Original languageEnglish
Pages (from-to)3201-3203
Number of pages3
JournalMaterials Letters
Volume61
Issue number14-15
DOIs
Publication statusPublished - 2007 Jun 1

Fingerprint

Multiwalled carbon nanotubes (MWCN)
carbon nanotubes
Electrochemical sensors
Electronic properties
Chemical vapor deposition
Buffers
sensors
in situ measurement
Acids
operating temperature
Sensors
hydroxides
buffers
vapor deposition
conductivity
cycles
acids
electrical resistivity
sensitivity
Temperature

Keywords

  • Carbon nanotube
  • Chemical vapor deposition
  • Sensor

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

pH sensitive multiwalled carbon nanotubes. / Lee, Kyongsoo; Kwon, Jae Hong; Moon, Seung l.; Cho, Woo Sung; Ju, Byeong Kwon; Lee, Yun-Hi.

In: Materials Letters, Vol. 61, No. 14-15, 01.06.2007, p. 3201-3203.

Research output: Contribution to journalArticle

Lee, K, Kwon, JH, Moon, SL, Cho, WS, Ju, BK & Lee, Y-H 2007, 'pH sensitive multiwalled carbon nanotubes', Materials Letters, vol. 61, no. 14-15, pp. 3201-3203. https://doi.org/10.1016/j.matlet.2006.11.072
Lee, Kyongsoo ; Kwon, Jae Hong ; Moon, Seung l. ; Cho, Woo Sung ; Ju, Byeong Kwon ; Lee, Yun-Hi. / pH sensitive multiwalled carbon nanotubes. In: Materials Letters. 2007 ; Vol. 61, No. 14-15. pp. 3201-3203.
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