FUNCTIONALIZATION OF MULTI-WALLED CARBON NANOTUBES WITH CYSTEAMINE FOR THE CONSTRUCTION OF CNT/GOLD NANOPARTICLE HYBRID NANOSTRUCTURES

Nanjundan Ashok Kumar, Sung Hun Kim, Jong Su Kim, Jong Tae Kim and Yeon Tae Jeong ()
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Nanjundan Ashok Kumar: Division of Image and Information Engineering, Pukyong National University, Busan 608739, Korea
Sung Hun Kim: Division of Image and Information Engineering, Pukyong National University, Busan 608739, Korea
Jong Su Kim: Division of Image and Information Engineering, Pukyong National University, Busan 608739, Korea
Jong Tae Kim: Division of Image and Information Engineering, Pukyong National University, Busan 608739, Korea
Yeon Tae Jeong: Division of Image and Information Engineering, Pukyong National University, Busan 608739, Korea

Surface Review and Letters (SRL), 2009, vol. 16, issue 03, 487-492

Abstract: Combining hybrid nanostructures of metal nanoparticles (NPs) and carbon nanotubes could afford a novel strategy to prepare promising nanomaterials for the highly sensitive sensors and imaging science applications. Conventional acid oxidation process was used to obtain carboxylic acid bound multi-walled carbon nanotubes (MWNTs) which was further acylated with thionyl chloride to give acyl chloride functionalized MWNTs. Thiol functionalized MWNTs were synthesized by amidation reaction of the acylated MWNTs with cysteamine. Further, gold nanoparticles (GNPs) were successfully fabricated on the tube walls to yield the CNT/Auhybrid. Fourier transform infrared spectroscopy and energy dispersive X-ray studies were used to characterize the surface chemical functionalities and composition of MWNTs, respectively. Evidence for the attachment of GNPs to thiol functionalized MWNTs was obtained from ultraviolet–visible absorption spectra. In addition, TEM images provided a vivid image of uniform decoration of GNPs on the nanotube sidewalls.

Keywords: Carbon nanotubes; functionalization; gold nanoparticles; decoration; hybrid nanostructures (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09012895

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