SERS spectra of MB using SnS₂-l-Cys as the substrate for surface-enhanced Raman spectroscopy.

Raman spectra of MB (cm−1)this work	Raman spectra of MB (cm−1)39,43–45	Corresponding bonds
448	449	C–N–C
500	502	C–N–C
675	670	C–H
773–949	768	C–H
1036	1030	C–H
1185	1184	C–N
1302	1301	C–H
1392	1396	C–H
1440	1442	C–N
1505	1513	C–C
1626	1618	C–C