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Updated: Jun 28, 2026
Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
Preparation of gold nanoparticles/functionalized multiwalled carbon nanotube nanocomposites and its glucose
Fenghua Li1, Zhonghua Wang, Changsheng Shan
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, and Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun, PR China.
Abstract:
Gold nanoparticles stabilized by amino-terminated ionic liquid (Au-IL) have been in situ noncovalently deposited on poly(sodium 4-styrene-sulfonate) (PSS)-functionalized multiwalled carbon nanotubes (MWCNTs) to form a MWCNTs/PSS/Au-IL nanocomposite. PSS can interact with MWCNTs through hydrophobic interaction. Amino-terminated ionic liquid was applied to reduce aqueous HAuCl(4), and the resulting gold nanoparticles were attached to the PSS-functionalized MWCNTs simultaneously. Most gold nanoparticles dispersed well on the functionalized MWCNTs. Transmission electron microscopy, Raman and X-ray photoelectron spectroscopy were used to confirm the composition and structure of the nanocomposites. The resulting MWCNTs/PSS/Au-IL composite exhibits good electrocatalysis toward oxygen and hydrogen peroxide reduction. And good biocompatibility with glucose oxidase was also demonstrated due to its good biocatalysis toward glucose substrate, which offered a friendly environment for the immobilization of biomolecules. Such bionanocomposite provides us potential applications in fabrication of biosensors. The resulting biosensor exhibits good response to glucose with a low detection limit 25 microM. It also has excellent reproducibility, satisfied operational stability and good storage stability.
