Surface-enhanced Raman scattering of sulfate ion based on Ag/Si nanostructure

Abstract

Silicon nanowires (SiNWs) with tens of micrometer in length have been synthesized and modified with Ag nanoparticles, which were confirmed by X-ray diffractometer (XRD), scanning electron microscopy and transmission electron microscopy. The Ag/Si nanostructure was employed to detect inorganic ions {SO}_4^{2-} via surface-enhanced Raman scattering (SERS) with strong signals at low concentrations of 1×10^-9 mol/L. This ultrasensitive method might be applied in other fields.

Keywords

surface-enhanced Raman scattering (SERS) / silicon nanowires (SiNWs) / Ag nanoparticles / sulfate ions

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 20701001), and the author thanks to Prof. J. Zuo at USTC for his help in SERS work.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg