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Boron-doped diamond electrodes in electroanalysis of reducible organic compounds
Vosáhlová, J. ; Zavázalová, J. ; Petrák, Václav ; Schwarzová-Pecková, K.
Boron doped diamond (BDD) electrodes became a well-established tool in electroanalysis of oxidizable organic compounds, nevertheless their possibilities in electroanalysis of reducible compounds remain relatively unexploited. Thus, in this study the influence of the presence of oxygen, electrode pretreatment, and activation between individual scans for electroreduction of tartrazine and allura red (azo group), 5-nitroquinoline (nitro group and N-heterocycle), vanillin (aromatic aldehyde), and azidothymidine (azide group) using batch voltammetry was tested.
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Transparent boron-doped diamond electrode (t-BDDE) for spectroelectrochemistry
Lušpai, K. ; Keszeliová, D. ; Barlog, M. ; Petrák, Václav
In this work we have studied the properties of high quality boron-doped diamond layers prepared on transparent substrate and their use as working electrode for EPR/UV-VIS-NIR spectroelectrochemistry. Final goal of this work is to benefit from the wide potential window of boron-doped diamond electrodes even in the field of the EPR/UV-VIS-NIR spectroelectrochemistry. The studied electrodes are compatiable with UV-VIS-NIR measurements. Spectral background is stable within the whole electrochemical window. Some of the electrodes, with lower doping level, are also compatible with EPR spectroscopy. In this work, the electrodes and their properties are presented and usability is demonstrate by the spectrochemistry on real sample.
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Transparent boron-doped diamond electrode (t-BDDE) for spectroelectrochemistry
Lušpai, K. ; Keszeliová, D. ; Barlog, M. ; Petrák, Václav
In this work we have studied the properties of high quality boron-doped diamond layers prepared on transparent substrate and their use as working electrode for EPR/UV-VIS-NIR spectroelectrochemistry. Final goal of this work is to benefit from the wide potential window of boron-doped diamond electrodes even in the field of the EPR/UV-VIS-NIR spectroelectrochemistry. The studied electrodes are compatiable with UV-VIS-NIR measurements. Spectral background is stable within the whole electrochemical window. Some of the electrodes, with lower doping level, are also compatible with EPR spectroscopy. In this work, the electrodes and their properties are presented and usability is demonstrate by the spectrochemistry on real sample.
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Boron-doped diamond electrodes in electroanalysis of reducible organic compounds
Vosáhlová, J. ; Zavázalová, J. ; Petrák, Václav ; Schwarzová-Pecková, K.
Boron doped diamond (BDD) electrodes became a well-established tool in electroanalysis of oxidizable organic compounds; nevertheless their possibilities in electroanalysis of reducible compounds remain relatively unexploited. Thus, in this study the influence of the presence of oxygen, electrode pretreatment, and activation between individual scans for electroreduction of tartrazine and allura red (azo group), 5-nitroquinoline (nitro group and N-heterocycle), vanillin (aromatic aldehyde), and azidothymidine (azide group) using batch voltammetry was tested.
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Nanodiamond seeding of rough substrates
Vlčková, M. ; Stefanovič, M. ; Petrák, V. ; Fendrych, František ; Taylor, Andrew ; Fekete, Ladislav ; Nesládek, M.
Efficient growth of nanocrystalline diamond (NCD) requires nucleation enhancement before chemical vapour deposition step. Nanodiamond (ND) seeding is a commonly used technique that yields high nucleation densities. This technique is well established for conventional planar substrates with low surface roughness. However, many engineering application requires NCD grow on rough and/or non-planar substrates. In this work, we investigate quality of nanodiamond seeding on silicon substrates of high surface roughness (RMS roughness <1 mm). Seeded substrates and deposited diamond films were analysed by atomic force microscopy (AFM), scanning electron microscopy (SEM) and Raman spectroscopy. We discuss influence of nanodiamond particles in seeding solution and seeding technique on nucleation density and quality of deposited NCD film.
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