Basal plane pyrolytic graphite electrode

A. Salimi, R.G. Compton, and R. Hallaj, Glucose biosensor prepared by glucose oxidase encapsulated sol-gel and carbon-nanotube-modified basal plane pyrolytic graphite electrode. Anal. Biochem. 333, 49— 56 (2004). 

This method involves electrochemical deposition of the MPc onto CNT-modified electrode surface by repetitive cycling in a concentrated MPc solution (1 mM) within a specific potential window. The first cyclic voltammetric scan is usually similar to subsequent scans, indicating the formation of monomeric species only. Ozoemena et al [11] found that on certain occasions, as reported recently [11] during the electro-deposition of CoTAPc onto a basal plane pyrolytic graphite electrode (BPPGE) pre-modified with SWCNT, both cathodic and anodic waves may decrease continually and then stabilizes at a certain scan (a process known as electrochemical adsorption or simply called electrosorption ). 

Bond AM, Marken F, Hill E, Compton RG, Hiigel H (1997) The electrochemical reduction of indigo dissolved in organic solvents and as a solid mechanically attached to a basal plane pyrolytic graphite electrode immersed in aqueous electrolyte solution. J Chem Soc Perkin Trans 2 1735-1742. 

Kano K, Uno B (1993) Surface-redox reaction mechanism of quinones adsorbed on basal-plane pyrolytic graphite electrodes. Anal Chem 58 2009-2012. 

Finally in this section it is worth noting that the oxidative coupling of phenols may be extended to form interesting polymers. Thus electrooxidative polymerization of phenol using basal-plane pyrolytic graphite electrodes gives thin black polymer films which are electrically conducting. ... 

Preparation of CoPc in PVP A mixed solution of DMF CoPc (Kanto Chemical Co.Inc. 5 to 50 jimol dm" ) and PVP (1 wt.%, prepared by radical poljnnerisation of 4-vinylpyridine) was prepared, and this solution (2 pL) was cast on a basal plane pyrolytic graphite electrode (BPG) (effective area 0.17 cm ) followed by solvent evaporation under ambient conditions. 

Fig. II.1.26 (a) Cyclic voltammogram [123] obtained in aqueous (0.1 M NaC104) media at 20°C for solid rran -[Cr(CO)2(dpe)2l mechanically attached to a polished basal plane pyrolytic graphite electrode (scan rate = 50 mV s ). (b) Schematic representation of redox processes at the interface between solid, electrode surface, and liquid electrolyte system...

Fig. 9.11 Basal-plane pyrolytic graphite electrode in vitamin Bi2r at a scan rate of 0.5 V for (a) unmodified BPPG in 1.2 mM vitamin Bur solution, (b) modified BPPG with DBCH in buffer solution, and (c) modified BPPG in vitamin Bi2r solution. Reproduced from P. Tomcik et al, Anal. Chem. 76 (2004) 161, with permission from the American Chemical...

Fig. 7 CVs of basal plane pyrolytic graphite electrodes at 100 mV in pH 7 buffer, 0.1 M KCl. 1 substrate-free cyt P450cam in oxygen-free buffer containing no enzyme 2 cyt P450oam"Stirfactant mixed film on same electrode after solution was purged with CO for 5 min 3 same electrode after solution was purged with N2 for 20 min to remove CO. Adapted from Ref. [36], Royal Society of Chemistry Publishers, Copyright 1997...

BPPGE Basal plane pyrolytic graphite electrode... 

Siswana M, Ozoemena KI, Nyokong T (2008) Enhaneed electrocatalytic detection of amitrole at basal plane pyrolytic graphite electrode modified with multi-walled carbon nanotubes and rron(II) tetra-aminophthalocyanine. Sensors 8 5096-5105... 

Ozoemena Kl, Pillay J, Nyokong T (2006) Preftaential electrosorption of cobalt (n) tetra-aminophthalocyanine at single-wall carbon nanohibes immobilized on a basal plane pyrolytic graphite electrode. Electrochem Comm 8 1391—1396... 

Haladjian et al investigated the behavior of cytochrome C3 at the basal-plane pyrolytic graphite electrode by cyclic voltammetry and differential pulse voltammetry. They observed modifications of the adsorbed film of cytochrome c upon scanning the potentials in both the anodic and cathodic ranges. The redox potentials were found to be pH-dependent, which suggested that irreversibly denatured forms containing a hemin-like group were in close contact with the electrode surface. 

Banks, C. E., Moore, R. R., Davies, T. J. et al. 2004. Investigation of modified basal plane pyrolytic graphite electrodes Definitive evidence for the electrocatalytic properties of the ends of carbon nanotubes. Chem. Commun. 1804-1805. 

In previous papers we have shown that anthracycline adriamycin (ADM) and its derivatives are strongly adsorbed on electrode surfaces and that the two-electron redox reaction of the anthraquinone moiety occurs through its semiquinone radical intermediate even in aqueous media. In addition, we have found characteristic reduction waves of molecular oxygen catalyzed by ADM and 7-deoxyadriamycinone (7-DADMN) adsorbed on basal-plane pyrolytic graphite electrode (BPGE) surfaces this report, we... 

W Working electrode (basal plane pyrolytic graphite electrode) C Counter electrode (platinum wire)... 

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