Synthesis of Carbon Nanotubes/Gold Nanoparticles Hybrids for Environmental Applications
Multi-walled carbon nanotubes were chemically cut by acid treatments and then deposited on 2-aminoethanethiol-modified gold substrate by the application of an external electric field. 2-aminoethanethiol-capped gold nanoparticles were then covalently bonded to the nanotubes to exploit their plasmon resonances. Reaction intermediates as well as the final products were analyzed by X-Ray Photoelectron Spectroscopy, Atomic Force Microscopy and Scanning Electron Microscopy. The synergetic interaction between carbon nanotubes and gold nanoparticles leads to an efficient signal enhancement in Raman spectra. This is of particular interest for the detection of toxic molecules dangerous for the environment.
Pietro Vincenzini, Maurizio Ferrari and Mrityunjay Singh
L. Minati et al., "Synthesis of Carbon Nanotubes/Gold Nanoparticles Hybrids for Environmental Applications", Advances in Science and Technology, Vol. 71, pp. 34-39, 2010