From DVD to dendritic nanostructure silver electrode for hydrogen peroxide detection

Cheap and disposable gold and silver electrodes: Trends in the application of compact discs and digital versatile discs for electroanalytical chemistry

“…A number of studies have shown the possibility of being able to modify the exposed metal layer using readily available office printers [7,10,76] or similar techniques [73] or chemically to form self-assemble monolayers [32] of for the addition for functional groups [33]. Beyond the scope of this review, reports have shown the possibility of utilising CDs and DVDs for both sample preparation as well as quantification using approaches such as surface plasma resonance [89], centrifugal microfluidics or so called 'lab-on-a-disc' devices [90][91][92][93][94][95], DNA microarrays [96].…”

“…Recently, several studies have utilised electrochemically roughened Ag CD based electrodes for the electro-catalytic determination of hydrogen peroxide [4,5]. By multiple cyclic voltammetric scanning of the Ag electrode dendritic nanostructures can be generated on the electrode surface which have been shown to improve the electrochemical performance of the electrodes for the detection of hydrogen peroxide.…”

“…The surface is characterised by concentric tracks ca. 0.4 µm in width and 0.1 µm deep, [4][5][6][7] separated by 1.3 µm [8] designed as a guide for the laser to follow. For the majority of discs, the metal layer is generally formed from Al, but Ag or Au are also commonly used.…”

“…Nevertheless, their relative high costs and the extensive cleaning steps required for usage has detracted from their general acceptance. In their seminal work in 2000 Angus et al [9] showed the possibility of fabricating Au electrodes from CDs and showed this to be a simple and inexpensive alternative method for the fabrication of these electrodes [7,10]. The Ag or Au layer can be simply exposed either by mechanical delamination of the disc [1,7] or by removal of the upper polymer layers with a suitable solvent such as nitric acid [9,11].…”

Digital versatile disc bipolar electrode: A fast and low-cost approach for visual sensing of analytes and electrocatalysts screening

“…This cheap substrate has also attracted attention for designing microfluidic and lab on chip devices [31][32][33]. Recently, the capability of using Ag electrodes manufactured from silver CD and DVD for the determination of hydrogen peroxide in traditional electrochemical setup have been investigated [34][35][36]. DVD-Rs are composed of two polycarbonate plates.…”