We further study the SERS mechanism in a semiconductor system and present a “turn-off” SERS strategy based on the catalysis properties of semiconductor. This method is simple and sensitive for the determination of Cr(VI) in water. We successfully demonstrated the first practical application of semiconductor-enhanced Raman spectroscopy based on the chemical enhancement contribution.
W. Ji, Y. Wang, I. Tanabe, X. X. Han, B. Zhao, and Y. Ozaki
“Semiconductor-Driven “Turn-Off” Surface-Enhanced Raman Scattering Spectroscopy: Application in Selective Determination of Chromium(VI) in Water”
Chemical Science, in-press (2014)