Electrochemical oxidation of sulphamerazine at boron‐doped diamond electrodes: Influence of boron concentration

Abstract

The boron-doped diamond (BDD) electrodes with different boron concentrations have been tested as electrode material for sulphamerazine (SRM) oxidation in water solution. An investigation of the electrode morphology and molecular structure was carried out using high resolution scanning electron microscopy (SEM) and Raman spectroscopy. Electrochemical results showed clearly that the kinetics and efficiency of sulphonamide oxidation were dependent on the amount of boron incorporated in a diamond film. The mechanism of sulphonamide oxidation was also analysed by cycle voltammograms and by identifying oxidative species (•OH radicals) which take part in the degradation process. The aging of the material during the operation was also studied.

Multifrequency nanoscale impedance microscopy (m-NIM): A novel approach towards detection of selective and subtle modifications on the surface of polycrystalline boron-doped diamond electrodes

“…A heavy boron concentrations in gas admixture increases the electrode's conductivity, concurrently accelerating the formation of new nucleation sites and affecting the size of BDD crystallites [41]. Among many factors, which significantly affect the heterogeneous distribution of electric and electrochemical properties on the surface of BDD electrodes, are: (i) sp 2 -carbon contamination from CVD process [42]; (ii) preferential boron accumulation at the grain boundary region [30]; (iii) boron dopant density [43]; (iv) crystallographic structure [44], and (v) the type of BDD electrode termination [45].…”

Dynamic Electrochemical Impedance Spectroscopy (DEIS) as a Tool for Analyzing Surface Oxidation Processes on Boron-Doped Diamond Electrodes

“…3,4 These properties make BDD a useful electrode material for applications in wastewater treatment, [5][6][7] electrochemical sensing [8][9][10][11] and electrocatalysis. [12][13][14] BDD is mostly synthesized by hot-filament CVD (HF CVD) 15,16 or microwave plasma-assisted CVD (MW PA CVD) and in situ doped with boron precursors.…”

“…Boron-doped diamond (BDD) electrodes have been recently studied in-depth because of their outstanding electrochemical features which include a wide electrochemical potential window in aqueous electrolytes, 1 high anodic stability, 2 and particular electrochemical stability in harsh environments. 3,4 These properties make BDD a useful electrode material for applications in wastewater treatment, [5][6][7] electrochemical sensing [8][9][10][11] and electrocatalysis. [12][13][14] BDD is mostly synthesized by hot-filament CVD (HF CVD) 15,16 or microwave plasma-assisted CVD (MW PA CVD) and in situ doped with boron precursors.…”

Voltammetric determination of erythromycin in water samples using a boron-doped diamond electrode

“…BDD also exhibits exceptional chemical and electrochemical stability. The application of BDD in electrochemistry is largely focused on the analysis of pharmaceuticals and wastewater treatment .…”