Electrochemically prepared colloidal, oxidised graphite

Colorful Polymer Compositions with Dyed Graphene Oxide Nanosheets

“…According to our observations, 5700 g is not sufficient for the full GONS precipitation. The shape of our optical spectrum of GO water suspension displayed in Figure 4 is similar to that obtained previously [25][26][27]. The band with the maximum at 228-230 nm is associated with an excitation of π-plasmons [25,28,29] in carbon structures, where the number of π-electrons per atom is substantially smaller than 1.…”

Preparation and physicochemical and electrochemical characterization of exfoliated graphite oxide

“…K 4 [Fe(CN) 6 ] and AA do not show any adsorption behavior on the uncoated or on the EGO-coated GC. This is confirmed by checking the electrodes used for any electrochemical activity, in fresh electrolyte solutions.…”

“…Fig. 5A shows the cyclic voltammograms of K 3 [Fe(CN) 6 ] /K 4 [Fe(CN) 6 ] on uncoated GC and EGO-coated GC electrodes in pH 7.0 1 M phosphate buffer. The anodic and cathodic peak potentials and the peak potential difference ( E p ) do not differ very much, suggesting that Fe(CN) 3−/4− 6 redox kinetics is similar on both the surfaces.…”

“…The charging currents remain constant during potential cycling and the film is found to be stable on the surface even after a large number of cycles. The EGO-coated GC surface is characterized using various redox systems comprising ascorbic acid (AA), K 4 [Fe(CN) 6 ], and dopamine. Fig.…”

“…Brodie's oxidizing mixture (KClO 4 + fuming HNO 3 ) is found to form GO only with graphitizable carbons that contain regions of graphitic structure [2,3]. There are a few reports on the electrochemical preparation of GO but the low yield and long reaction time are disadvantageous when compared to the chemical oxidation [6][7][8][9][10]. Bard and co-workers have reported the formation of GO layer during the electrochemical activation of GC [7].…”