. 2016 May 24;9(6):406. doi: 10.3390/ma9060406

Table 5.

In situ electrochemical reduction approaches for graphene–gold nanoparticles.

Electrode	Composition of Electrolytic Solution	Applied Electrochemical Potential and Reaction Condition	References
AuNPs/rGO/GCE	10 mM AuCl₃, Nafion (0.5%), and 0.1 M H₂SO₄	−1.0 V for 500 s.	[41]
Au film/graphene–Au nanocomposite/GCE	0.1 mM HAuCl₄	−1.2 V for 50 s for graphene; −0.25 V for 50 s for Au electrodeposition. Run the process using alternate graphene and AuNPs for 3 cycles.	[89]
DHB/AuNPs/rGO/GCE	0.3 mM HAuCl₄	−0.2 V for 24 h at room temp.	[90]
Graphene/nano-Au/GCE	0.1 M Kn and 5 mM HAuCl₄	−0.2 to 1.0 V for 2 cycles at scan rate of 50 mV∙s⁻¹.	[91]
AuNP/electro reduced graphene (eGr)/Indium titanium oxide (ITO)	0.5 mM HAuCl₄.nH₂O in phosphate buffer	0 to −1.6 V continuously for 75 cycles at a scan rate 50 mV·s⁻¹ to electrodeposit eGr on ITO and 25 cycles for AuNPs electrodeposition.	[120]
AuNPs/2,5-di-(2-thienyl)-1-pyrrole-1-(p-benzoic acid) (DPB)/graphene/Au electrode	3 mM of HAuCl₄ containing 0.5 M H₂SO₄	−1.2 V for 200 s for electrochemical reduction and deposition of GO on Au electrode; −0.25 V for 25 s at 10 °C for the electrodeposition of AuNPs.	[121]
AuNPs/graphene-nanofibers/GCE	25 mM of HAuCl₄ containing 0.1 M Na₂SO₄ solution	−0.4 V for 300 s for the electrochemical deposition of AuNPs.	[122]
AuNPs/graphene/GCE	mM HAuCl₄ solution containing 0.5 M H₂SO₄	−1.2 V for 1200 s for the electrochemical reduction of GO on the electrode surface; −0.25 V for 30 s for the electrodeposition of AuNPs.	[123]
Graphene/nano-Au/GCE	0.1 M phosphate buffer (pH 7.0) containing 6.5 mM HAuCl₄	0 to −2 V at a scan rate of 100 mV·s⁻¹ for continuous cyclic voltammetric sweep of 40 cycles.	[124]
AuNPs/GO/GCE	HAuCl₄ solution	Electrodeposition of AuNPs by pulse voltammetry with a pulse width of 0.1 s, potential 1.1 and −0.2 V, respectively.	[125]
AuNPs/ERGO/carbon ionic liquid electrode (CLIE)	5.0 mM HAuCl₄ solution	−1.3 V for 300 s to from a stable ERGO on the surface of CILE; −0.4 V for 300 s for electrodeposition of AuNPs on ERGO/CILE.	[126]