Optical Property Characterization of Novel Graphene-X (X=Ag, Au and Cu) Nanoparticle Hybrids

Table 3

Comparison of UV-Vis absorption peak position of GO, G, AgNPs, Ag-G, AuNPs, Au-G, CuNPs, and Cu-G.

Material	Graphene peak position	Plasmon peak position
Graphene oxide (GO)	230 nm (𝜋→𝜋^∗); 303 nm (𝑛→𝜋^∗)	—
Graphene (G)	266 nm	—
Pure silver nanoparticles (AgNP)	—	430 nm
Silver decorated graphene (Ag-G)	260 nm	420 nm
Pure gold nanoparticles (AuNP)	—	520 nm
Gold decorated graphene (Au-G)	264 nm	524 nm
Pure copper nanoparticles (CuNP)	—	475 nm
Copper decorated graphene (Cu-G)	264 nm	540 nm