(a) XRD pattern of the copper vanadate; SEM images of (b) showing large scale ribbon-like products and (c) showing thickness of 20-30 nm (marked with an white arrow); and (d) TEM image of copper vanadate nanoribbons and HRTEM (inset) showing (001) crystal plane.
Schematic to illustrate the process of the SERS detection.
A typical Raman spectrum of the 1 × 10−5 M R6G solution on copper vanadate nanoribbons as substrate (upper part) and the SERS contour (lower part).
(a) The SERS spectrum of 0.01 M Try solution (pH = 10, NaHCO3-Na2CO3 buffer); (b) The Raman spectrum of 0.01 M Tyr solution (pH = 10, NaHCO3-Na2CO3 buffer), hardly showing a characteristic peak; and (c) schematic of the combination pattern: Tyr and vanadate.
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