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Electrochemical performance of thin free-standing boron-doped diamond nanosheet electrodes

Abstrakt

In the following work we describe preparation and the electrochemical performance of thin and free-standing heavy boron-doped diamond (BDD) nanosheets. The investigated foils were deposited on Ta substrate using microwave plasma-enhanced chemical vapor deposition technique (MPECVD). Foils of two B-dopant densities were investigated, obtained on the base of 10 k and 20 k ppm [B]/[C] ratio in the gas admixture. The obtained foils can be easily peeled from substrate in deionized water to be then attached to other material, in this case polydimethylsiloxane (PDMS). We have shown that the top surface and the bottom side of investigated boron-doped diamond nanosheet possess significantly altered morphology and physico-chemical properties, revealed by electron microscopy, Raman spectroscopy and electrochemistry. The voltammetric response of investigated BDD foils as working electrodes indicates the highest activity for the nanosheet with higher dopant concentration, in particular on its top surface. Furthermore, electrodes are characterized with altered kinetics, characteristic for partially blocked electrodes with quasi-reversible charge transfer.

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Wersja publikacji
Accepted albo Published Version
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.jelechem.2020.114016
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Creative Commons: CC-BY-NC-ND otwiera się w nowej karcie

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY nr 862, strony 1 - 7,
ISSN: 1572-6657
Język:
angielski
Rok wydania:
2020
Opis bibliograficzny:
Bogdanowicz R., Ficek M., Malinowska N., Gupta S., Meek R., Niedziałkowski P., Rycewicz M., Mirosław S., Ryl J., Ossowski T.: Electrochemical performance of thin free-standing boron-doped diamond nanosheet electrodes// JOURNAL OF ELECTROANALYTICAL CHEMISTRY -Vol. 862, (2020), s.1-7
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.jelechem.2020.114016
Weryfikacja:
Politechnika Gdańska

wyświetlono 161 razy

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