Electrode boron-doped

Boron-doped diamond electrodes - boron-doped diamond electrodes ... 

A boron-doped diamond electrode was used as prepared. 

An electrochemically oxidized boron-doped diamond electrode was used. The observed rates were concentration-dependent. 

Finally, the presence of ultrasound in the electrodeposition of metals can produce both massive metal and metal colloid [75]. The reduction of AuCLt- at polycrystalline boron-doped diamond electrodes follows two pathways forming... 

Holt KB, Sabin G, Compton RG et al (2002) Reduction of tetrachloroaureate(III) at boron-doped diamond electrodes gold deposition versus gold colloid formation. Electroanalysis 14 797-803... 

Saterlay AJ, Wilkins SJ, Holt KB et al (2001) Lead dioxide deposition and electrocalysis at highly boron-doped diamond electrodes in the presence of ultrasound. J Electrochem Soc 148 E66-E72... 

Saez V, Gonzalez-Garcia J, Kulandainathan MA et al (2007) Electro-deposition and stripping of catalytically iron metal nanoparticles at boron-doped diamond electrodes. Electrochem Commun 9 1127-1133... 

Couto et al. [11] developed a flow injection system with potentiometric detection for determination of TC, OTC, and CTC in pharmaceutical products. A homogeneous crystalline CuS/Ag2S double membrane tubular electrode was used to monitor the Cu(II) decrease due to its complexation with OTC. The system allows OTC determination within a 49.1 1.9 x 103 ppm and a precision better than 0.4%. A flow injection method for the assay of OTC, TC, and CTC in pharmaceutical formulations was also developed by Wangfuengkanagul et al. [12] using electrochemical detection at anodized boron-doped diamond thin-film electrode. The detection limit was found to be 10 nM (signal-to-noise ratio = 3). 

Wangfuengkanagul and Chailapakul [9] described the electroanalysis of ( -penicillamine at a boron-doped diamond thin film (BDD) electrode using cyclic voltammetry. The BDD electrode exhibited a well-resolved and irreversible oxidation voltammogram, and provided a linear dynamic range from 0.5 to 10 mM with a detection limit of 25 pM in voltammetric measurement. In addition, penicillamine has been studied by hydrodynamic voltammetry and flow injection analysis with amperometric detection using the BDD electrode. 

Fig. 4.9 Cyclic voltammograms of silicon anodes of different crystal orientation (1015 crrf3, boron doped, versus a Pt pseudoreference electrode in 5% HF), with the characteristic...

Figure4.2 Field emission SEM image of a monolayer ofTi02 NPs adsorbed onto a highly polished boron-doped diamond electrode. From reference [38] with permission.

Marken and coworkers examined Ti02 NPs in various types of interfadal assemblies [38, 40, 57, 58]. In their first study, commerdally available 6-nm diameter Ti02 NPs were directly adsorbed onto polished boron-doped diamond electrodes from acidic aqueous solutions containing the Ti02 sol [38]. Using field emission SEM and STM, they observed relatively uniform adsorption of the Ti02 NPs and small... 

Wang, J., G. Chen, M. Chatrathi, K. Shin, and A. Fujishima. Microchip capillary electrophoresis coupled with a boron-doped diamond electrode-based electrochemical detector. Anal. Chem. 75, 935-939 (2003). 

Sires I., P.L. Cabot, F. CenteUas, J.A. Garrido, R.M. Rodriguez, C. Arias, and E. Brillas (2006). Electrochemical degradation of clofibric acid in water by anodic oxidation Comparative study with platinum and boron-doped diamond electrodes. Electrochimica Acta 52 75-85. 

The electrode material for electrofluo-rination processes is important, and new materials with high conductivity but chemically inert surface characteristics are desirable. Materials such as Ni, Monel, or HastaUoy are commonly employed [46] and the use of Pt has been pioneered by Schmidt [47]. Boron-doped diamond is a novel electrode material with a chemically highly inert surface suitable for... 

The suitability of boron-doped diamond as anode material for the generation of aggressive reagents, such as bromine, has been investigated. Vinokur et al. reported that the electron transfer at boron-doped diamond electrodes is strongly affected by the nature of the electrode process. Irmer-sphere processes such as the bromine evolution from bromide seem to be Id-netically slow, [73,120] in particular, when occurring positive of a potential of approximately —0.05 V vs. SCE. This is currently limiting possible wider applications of boron-doped diamond electrode materials. 

Deposition of mercury at boron-doped diamond (BDD) and platinum electrodes has also been studied [33]. Deposition and oxidation of mercury was performed by cyclic voltammetry from the solution of 1 mM Hg2 ( 104)2 in 1 M Na l04. In order to learn more about this deposition, it was carried out also under chronoamperometric conditions. The results obtained are shown in Fig. 2 in the form of dimensionless current-time transients. Experimental curves obtained at two different overpotentials were compared with the theoretical curves calculated for instantaneous and progressive nucleation. A good agreement of experimental plots with the instantaneous nucleation mechanism was... 

Fig. 2 Comparison of the experimental dimensionless current-time transients for electrodeposition of mercury onto boron-doped diamond electrode with the theoretical transients for instantaneous (upper curve) and progressive (lower curve) nucleation overpotentials (x) 0.862 V and ( ) 0.903 V (from Ref 33).

Sopchak D, Miller B, Avygal Y, Kalish R (2002) Rotating ring-disk electrode studies of the oxidation of p-methoxyphenol and hydroquinone at boron-doped diamond electrodes. J. Electroanal Chem 538 39-45. 

Voltammetry is a term used to include all the methods that measure current-potential curves (voltammograms) at small indicator electrodes other than the DME [6], There are various types of voltammetric indicator electrodes, but disk electrodes, as in Fig. 5.17, are popular. The materials used for disk electrodes are platinum, gold, graphite, glassy carbon (GC), boron-doped diamond8, carbon paste, etc. and they can be modified in various ways. For electrode materials other than mercury, the potential windows are much wider on the positive side than for mercury. However, electrodes of stationary mercury-drop, mercury-film, and mercury-pool are also... 

The boron-doped diamond film electrode is the newest of the voltammetric indicator electrodes. It is promising because of its high chemical stability, low background currents, and wide potential windows (high overpoten-... 

Boron-doped diamond coating on Pt electrode. [From J. Cvacka et at. Anal. Chem. 2003, 75,2678. Courtesy G. M. Swain, Michigan Slate University.]... 

Boron-doped chemical-vapor-deposited diamond is an exceptionally inert carbon electrode with a very wide potential window and very low voltammetric background current. [A. E. Fischer, Y. Show, and G. M. Swain, Electrochemical Performance of Diamond Thin-Film Electrodes from Different Commercial Sources, Anal. Chem. 2004, 76, 2553.]... 

---