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. 2014 Apr 3;4(2):267–300. doi: 10.3390/nano4020267

Table 2.

Work function data for graphene based noble metal composites.

S.No. Modified Graphene Method Precursor WF (eV) Improved property Application Ref.
1 Graphene-ZnO-Au Hydrothermal Zn Acetate , HAuCl4 Value not given Efficiency = 3.5–4.5 fold more than ZnO Removing pollutant (nitrobenzene) [157]
2 Various Au dopants on graphene Chemical doping AuBr3, Au2S, Au(OH)3, AuCl3 5, 4.8, 4.6, 4.9 as doped and 4.5, 4.4, 4.55, 4.3 eV as annealed (w.r.t. the precursor) Multiuse of graphene due to tunable WF property Energy conversion devices and sensors [159]
3 Au/graphene Chemical doping AuCl3 Increase by 0.5 eV with increase in doping time Tunable WF property Optoelectronic devices [60]
4 Ag/graphene Photochemical silver functionalization AgNO3 Value not given Suppressed e-h recombination Efficient removal of hazardous materials [161]
5 Au/Ag/Pt-graphene Graphene adsorption metal substrate Au, Ag, Pt substrates were used 5.54–4.74, 4.92–4.24, 6.13–4.8 eV Multipurpose modified graphene Energy conversion devices [168]