Review on the Effects of Electrochemical Exfoliation Parameters on the Yield of Graphene Oxide

Abstract

Recent years have witnessed many breakthroughs in research on graphene as well as a significant improvement in the electrochemical synthesis methods of graphene oxide (GO). GO is a derivative of graphene which has attracted the focus of worldwide scientists and researchers because of its hydrophilic and easily functionalized properties. The electrochemical approach is popular because it saves time, creates zero explosion risk, releases no hazardous gases, and avoids environmental pollution. Although recent publications show that the green, rapid, and mass electrochemical synthesis of GO has more advantages as compared with the traditional Hummers method, it is crucial to study the effects of reaction parameters. Herein, we review recent various works regarding the influences of various reaction parameters on the synthesis of GO sheets. The advancement, current challenges, and solutions of electrochemical synthesis methods of GO are also outlined. Through this review, we hope to spark some clear ideas for anyone who wants to scale up the yield of GO.

Optimization of the Electrochemical Method of Obtaining Graphene Nanoplatelets (GNPs)

“…Because the process involved ions that could oxidize graphene, the oxygen content in the sample with the best quality (10 V) was also checked. For the selected sample, the carbon-to-oxygen ratio was 7.7, which is comparable to the values obtained by Selverda et al [ 40 ] or Liu et al [ 41 ].…”

Photoelectrocatalytic activity of silicon nanowires decorated with electroless copper nanoparticles and graphene oxide using a plasma jet for removal of methyl orange under visible light

“…It is related to the intercalation of ions containing sulfur functional groups, 55,56 which could be associated with sulfate ions from sulfuric acid and potassium sulfate. 57,58…”

“…It is related to the intercalation of ions containing sulfur functional groups, 55,56 which could be associated with sulfate ions from sulfuric acid and potassium sulfate. 57,58 The nature of the deposited carbon material was also investigated through the chronoamperometry technique. As shown in Fig.…”

Green and Sustainable Ultrasound-Assisted Anodic Electrochemical Preparation of Graphene Oxide Dispersions and Their Antioxidant Properties

“… At the cathode: 2H 2 O – 4 = O 2 + 4H + (1.229 V) (2); water oxidation; >C=C< → >C=O, –COOH, >CH–OH, >C=O etc. (3); graphite structure oxidation [ 40 ]; 2 – 2 = ( =2.010 V) (4); the formation of an additional oxidizer peroxydisulfate ion in solution. Reactions of hydrolysis of byproducts: (NH 4 ) 2 S 2 O 8 + 2H 2 O = 2(NH 4 )HSO 4 + H 2 O 2 (5); hydrolysis of electrolysis byproducts.…”