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Issue 20, 2012
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Synthesis of gold@carbon dots composite nanoparticles for surface enhanced Raman scattering

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Abstract

Gold@carbon dots composite nanoparticles (Au@CDs) with ultrathin carbon dot (CD) shells of ca. 2 nm were prepared by reducing HAuCl4 with CDs at 100 °C. By adjusting the feeding mass ratio of HAuCl4 to CDs, the average diameters of Au@CDs can be modulated from 8 to 44 nm. The suspension of Au@CDs with an average diameter of ca. 24 nm was applied as a substrate for surface enhanced Raman scattering (SERS) and it exhibited a higher SERS effect for rhodamine 6G (Rh6G) than the suspension of pure Au nanoparticles with nearly the same size. The excellent SERS effect of Au@CDs is mainly attributed to their improved capability of adsorbing the aromatic probe molecules.

Graphical abstract: Synthesis of gold@carbon dots composite nanoparticles for surface enhanced Raman scattering

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Publication details

The article was received on 10 Mar 2012, accepted on 02 Apr 2012 and first published on 02 Apr 2012


Article type: Paper
DOI: 10.1039/C2CP40767A
Citation: Phys. Chem. Chem. Phys., 2012,14, 7360-7366
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    Synthesis of gold@carbon dots composite nanoparticles for surface enhanced Raman scattering

    P. Luo, C. Li and G. Shi, Phys. Chem. Chem. Phys., 2012, 14, 7360
    DOI: 10.1039/C2CP40767A

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