[Show abstract][Hide abstract] ABSTRACT: Graphene oxide is explored as a potential electrode material and shown for the first time to exhibit unique voltammetric profiles towards select redox probes. This unique voltammetry provides a route for characterising graphene oxide, providing a simple methodology for the determination of the complete chemical or electrochemical reduction of graphene oxide to graphene prior to its application in a plethora of areas.
[Show abstract][Hide abstract] ABSTRACT: We explore the use of surfactant free graphene towards the electroanalytical sensing of cadmium(II) ions via anodic stripping voltammetry. In line with literature methodologies, we modify an electrode substrate which exhibits relatively fast electron transfer with commercially available graphene which is free from surfactants. Surprisingly, we find that graphene reduces the analytical performance and hence inhibits the electrochemical detection of cadmium(II) ions, with calibration plots in model aqueous solutions revealing no advantages of employing graphene in this analytical context.