Electrochemical performance of thin free-standing boron-doped diamond nanosheet electrodes
Robert Bogdanowicz , Mateusz Ficek , Natalia Malinowska , Sanju Gupta , Romney Meek , Paweł Niedziałkowski , Michał Rycewicz , Mirosław Sawczak , Jacek Ryl , Tadeusz Ossowski
AbstractIn 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.
|Journal series||Journal of Electroanalytical Chemistry, ISSN 1572-6657, e-ISSN 1873-2569, (N/A 70 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Boron-doped diamond, free-standing diamond nanosheets, cyclic voltammetry, electron transfer mechanism|
|ASJC Classification||; ;|
|License||Other; published final; ; with publication|
|Score||= 70.0, 29-04-2020, ArticleFromJournal|
|Publication indicators||= 0; : 2018 = 0.813; : 2018 = 3.218 (2) - 2018=3.032 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.