Peer Reviewed: Boron-Doped Diamond Thin-Film Electrodes

Electrochemical Mapping Reveals Direct Correlation between Heterogeneous Electron‐Transfer Kinetics and Local Density of States in Diamond Electrodes

“…As for the data set reported in Figure 1, both FE-SEM and Raman images, Figures 2(a) and (b), respectively, were recorded in the same area as the IC-SECM image (Figure 2(c)) to allow direct correlation of electrochemical activity with doping levels. In this case, the bulk solution contained 1 mM FcTMA + (50 mM KNO 3 ) and a tip of a = 1.3 µm, at d = 1.0 µm was employed. The substrate was biased at a potential of +0.420 V versus Ag/AgCl wire ( = 0.045 V) to oxidize FcTMA + , while the tip was biased at 0.0 V to collect any FcTMA 2+ , generated at the pBDD substrate, at a diffusion-controlled rate.…”

“…[3], [4] The different facets that make up the crystallites in pBDD contain different amounts of boron, resulting in a heterogeneously doped electrode surface. The material is generally considered metal-like for [B] > 10 20 cm -3 and semiconducting for [B] < 10 19 cm -3 , with a region between these limits characterized by hopping conduction.…”

Electrocatalytic Materials and Techniques for the Anodic Oxidation of Various Organic Compounds

“…Landsberg and co-workers [25 J offered an analytical approach to the current response due to radial convection, further refined by Scheller and co-workers [26,27], and summarized by [28], but gave the correct functional dependence [26]. Caprani and Frayret [33] developed an equation for a partially blocked surface with independently active sites, for which the current is summed for each microelectrode over the entire surface.…”

Analysis of Tetracycline Antibiotics Using HPLC with Pulsed Amperometric Detection

“…From many reviewed reports, it is interesting to combine liquid chromatography and the PAD technique with an anodized boron-doped diamond electrode to separate and detect no significant UV absorbing chromophore and electroactive compounds. [25][26][27][28] The boron-doped diamond thin film (BDD) electrodes have many advantages for electroanalysis applications, due to their unique electrochemical properties, 29 which include a wide electrochemical potential window in aqueous solutions, a very low background current, and great electrochemical stability. [29][30][31] Recently, it was found that BDD electrodes pretreated by electrochemical oxidation exhibit well-defined irreversible cyclic voltammograms for the oxidation of tetracycline antibiotics with the highest current signals compared to the asdeposited BDD and glassy carbon electrodes.…”