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Tailoring properties of reduced graphene oxide by oxygen plasma treatment

Abstrakt

We report an easily controllable, eco-friendly method for tailoring the properties of reduced graphene oxide (rGO) by means of oxygen plasma. The effect of oxygen plasma treatment time (1, 5 and 10 minutes) on the surface properties of rGO was evaluated. Physicochemical characterization using microscopic, spectroscopic and thermal techniques was performed. The results revealed that different oxygen-containing groups (e.g. carboxyl, hydroxyl) were introduced on the rGO surface enhancing its wettability. Furthermore, upon longer treatment time, other functionalities were created (e.g. quinones, lactones). Moreover, external surface of rGO was partially etched resulting in an increase of the material surface area and porosity. Finally, the oxygen plasma-treated rGO electrodes with bilirubin oxidase were tested for oxygen reduction reaction. The study showed that rGO treated for 10 min exhibited twofold higher current density than untreated rGO. The oxygen plasma treatment may improve the enzyme adsorption on rGO electrodes by introduction of oxygen moieties and increasing the porosity.

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Wersja publikacji
Accepted albo Published Version
Licencja
Creative Commons: CC-BY-NC-ND otwiera się w nowej karcie

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
APPLIED SURFACE SCIENCE nr 440, strony 651 - 659,
ISSN: 0169-4332
Język:
angielski
Rok wydania:
2018
Opis bibliograficzny:
Kondratowicz I., Nadolska M., Şahin S., Łapiński M., Prześniak-Welenc M., Sawczak M., Yu E., Sadowski W., Żelechowska K.: Tailoring properties of reduced graphene oxide by oxygen plasma treatment// APPLIED SURFACE SCIENCE. -Vol. 440, (2018), s.651-659
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.apsusc.2018.01.168
Weryfikacja:
Politechnika Gdańska

wyświetlono 220 razy

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