Fabrication, morphology and electrochemical properties of boron doped diamond microelectrodes on tungsten supports
Abstract
Two types of microelectrodes were prepared by insulating boron doped diamond-coated tungsten wires in glass capillary. During the deposition step using microwave plasma enhanced chemical vapour deposition process with linear antenna delivery, the wires were held in different positions.
Raman spectroscopy and scanning electron microscopy were used for characterisation of the morphology of the boron doped diamond microelectrodes. Cyclic voltammetry was performed for electrochemical characterization using inner-sphere and outer-sphere redox markers and several supporting electrolytes in aqueous media.
The uniformity of the boron doped diamond layer and its quality was assessed revealing a dependence on coverage according to the position during the deposition step.