Comparison of the proposed approach with other reported colorimetric methods for the detection of glucose.

Material	Method	LOD (μM)	Linear range (mM)	Ref.
CeO2/nanotube-TiO2	Colorimetric	6.1	0.01–0.5	42
Au@Ag nanorods	Colorimetric	39	0.05–20	16
γ-Fe2O3–SiO2	Colorimetric	3.2	—	38
Au@TiO2	Colorimetric	3.5	0–1	13
R-Cu@Au/Pt NPs	Colorimetric	6	0–1.9	This work