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Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.

Publication ,  Journal Article
Mubeen, S; Zhang, T; Chartuprayoon, N; Rheem, Y; Mulchandani, A; Myung, NV; Deshusses, MA
Published in: Analytical chemistry
January 2010

Herein, we demonstrate that highly sensitive conductometric gas nanosensors for H(2)S can be synthesized by electrodepositing gold nanoparticles on single-walled carbon nanotube (SWNT) networks. Adjusting the electrodeposition conditions allowed for tuning of the size and number of gold nanoparticles deposited. The best H(2)S sensing performance was obtained with discrete gold nanodeposits rather than continuous nanowires. The gas nanosensors could sense H(2)S in air at room temperature with a 3 ppb limit of detection. The sensors were reversible, and increasing the bias voltage reduced the sensor recovery time, probably by local Joule heating. The sensing mechanism is believed to be based on the modulation of the conduction path across the nanotubes emanating from the modulation of electron exchange between the gold and carbon nanotube defect sites when exposed to H(2)S.

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Published In

Analytical chemistry

DOI

EISSN

1520-6882

ISSN

0003-2700

Publication Date

January 2010

Volume

82

Issue

1

Start / End Page

250 / 257

Related Subject Headings

  • Sensitivity and Specificity
  • Nanotubes, Carbon
  • Metal Nanoparticles
  • Hydrogen Sulfide
  • Gold
  • Analytical Chemistry
  • 4004 Chemical engineering
  • 3401 Analytical chemistry
  • 3205 Medical biochemistry and metabolomics
  • 0399 Other Chemical Sciences
 

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Mubeen, S., Zhang, T., Chartuprayoon, N., Rheem, Y., Mulchandani, A., Myung, N. V., & Deshusses, M. A. (2010). Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes. Analytical Chemistry, 82(1), 250–257. https://doi.org/10.1021/ac901871d
Mubeen, Syed, Ting Zhang, Nicha Chartuprayoon, Youngwoo Rheem, Ashok Mulchandani, Nosang V. Myung, and Marc A. Deshusses. “Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.Analytical Chemistry 82, no. 1 (January 2010): 250–57. https://doi.org/10.1021/ac901871d.
Mubeen S, Zhang T, Chartuprayoon N, Rheem Y, Mulchandani A, Myung NV, et al. Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes. Analytical chemistry. 2010 Jan;82(1):250–7.
Mubeen, Syed, et al. “Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.Analytical Chemistry, vol. 82, no. 1, Jan. 2010, pp. 250–57. Epmc, doi:10.1021/ac901871d.
Mubeen S, Zhang T, Chartuprayoon N, Rheem Y, Mulchandani A, Myung NV, Deshusses MA. Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes. Analytical chemistry. 2010 Jan;82(1):250–257.
Journal cover image

Published In

Analytical chemistry

DOI

EISSN

1520-6882

ISSN

0003-2700

Publication Date

January 2010

Volume

82

Issue

1

Start / End Page

250 / 257

Related Subject Headings

  • Sensitivity and Specificity
  • Nanotubes, Carbon
  • Metal Nanoparticles
  • Hydrogen Sulfide
  • Gold
  • Analytical Chemistry
  • 4004 Chemical engineering
  • 3401 Analytical chemistry
  • 3205 Medical biochemistry and metabolomics
  • 0399 Other Chemical Sciences