Enhanced signal-to-background ratios in voltammetric measurements made at diamond thin-film electrochemical interfaces

Jerzy W. Strojek; Michael C. Granger; Greg M. Swain; Tim Dallas; Mark W. Holtz

doi:10.1021/ac9506847

Enhanced signal-to-background ratios in voltammetric measurements made at diamond thin-film electrochemical interfaces

Jerzy W. Strojek, Michael C. Granger, Greg M. Swain, Tim Dallas, Mark W. Holtz

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

138 Scopus citations

Abstract

Large signal-to-background (S/B) ratios for the Fe(CN)₆^3-/4- and IrCl₆^2-/3- redox couples in KCl have been observed in cyclic voltammetric measurements made at a conductive diamond thin-film electrode without any conventional surface pretreatment The S/B ratios were a factor of ∼16 and 8 larger at diamond than at freshly polished glassy carbon (GC) for Fe(CN)₆^3-/4- and IrCl₆^2-/3-, respectively. The polycrystalline diamond film, grown on a p-Si(100) substrate, possessed significant cubic {100} faceting, as evidenced by AFM images, and was of high quality, as indicated by Raman spectroscopy. The high degree of electrochemical activity without surface pretreatment, the enhanced S/B ratios, and the excellent response stability demonstrate that diamond might be an attractive new electrode material for electroanalysis.

Original language	English
Pages (from-to)	2031-2037
Number of pages	7
Journal	Analytical Chemistry
Volume	68
Issue number	13
DOIs	https://doi.org/10.1021/ac9506847
State	Published - Jul 1 1996

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title = "Enhanced signal-to-background ratios in voltammetric measurements made at diamond thin-film electrochemical interfaces",

abstract = "Large signal-to-background (S/B) ratios for the Fe(CN)63-/4- and IrCl62-/3- redox couples in KCl have been observed in cyclic voltammetric measurements made at a conductive diamond thin-film electrode without any conventional surface pretreatment The S/B ratios were a factor of ∼16 and 8 larger at diamond than at freshly polished glassy carbon (GC) for Fe(CN)63-/4- and IrCl62-/3-, respectively. The polycrystalline diamond film, grown on a p-Si(100) substrate, possessed significant cubic {100} faceting, as evidenced by AFM images, and was of high quality, as indicated by Raman spectroscopy. The high degree of electrochemical activity without surface pretreatment, the enhanced S/B ratios, and the excellent response stability demonstrate that diamond might be an attractive new electrode material for electroanalysis.",

author = "Strojek, {Jerzy W.} and Granger, {Michael C.} and Swain, {Greg M.} and Tim Dallas and Holtz, {Mark W.}",

year = "1996",

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T1 - Enhanced signal-to-background ratios in voltammetric measurements made at diamond thin-film electrochemical interfaces

AU - Strojek, Jerzy W.

AU - Granger, Michael C.

AU - Swain, Greg M.

AU - Dallas, Tim

AU - Holtz, Mark W.

PY - 1996/7/1

Y1 - 1996/7/1

N2 - Large signal-to-background (S/B) ratios for the Fe(CN)63-/4- and IrCl62-/3- redox couples in KCl have been observed in cyclic voltammetric measurements made at a conductive diamond thin-film electrode without any conventional surface pretreatment The S/B ratios were a factor of ∼16 and 8 larger at diamond than at freshly polished glassy carbon (GC) for Fe(CN)63-/4- and IrCl62-/3-, respectively. The polycrystalline diamond film, grown on a p-Si(100) substrate, possessed significant cubic {100} faceting, as evidenced by AFM images, and was of high quality, as indicated by Raman spectroscopy. The high degree of electrochemical activity without surface pretreatment, the enhanced S/B ratios, and the excellent response stability demonstrate that diamond might be an attractive new electrode material for electroanalysis.

AB - Large signal-to-background (S/B) ratios for the Fe(CN)63-/4- and IrCl62-/3- redox couples in KCl have been observed in cyclic voltammetric measurements made at a conductive diamond thin-film electrode without any conventional surface pretreatment The S/B ratios were a factor of ∼16 and 8 larger at diamond than at freshly polished glassy carbon (GC) for Fe(CN)63-/4- and IrCl62-/3-, respectively. The polycrystalline diamond film, grown on a p-Si(100) substrate, possessed significant cubic {100} faceting, as evidenced by AFM images, and was of high quality, as indicated by Raman spectroscopy. The high degree of electrochemical activity without surface pretreatment, the enhanced S/B ratios, and the excellent response stability demonstrate that diamond might be an attractive new electrode material for electroanalysis.

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