Fig. 4: Temperature effect.

a Temperature-dependent SERS peak intensities of the 4MBA/Ag/Ag-doped TiO2 hybrid system. b Temperature-dependent of Raman peak intensities of the Ag/Ag-doped TiO2 substrate.
a Temperature-dependent SERS peak intensities of the 4MBA/Ag/Ag-doped TiO2 hybrid system. b Temperature-dependent of Raman peak intensities of the Ag/Ag-doped TiO2 substrate.