Repozytorium publikacji - Politechnika Gdańska

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.

Autorzy

• mgr inż. Izabela Kondratowicz link otwiera się w nowej karcie ,
• Małgorzata Nadolska link otwiera się w nowej karcie ,
• Samet Şahin,
• dr hab. inż. Marcin Stanisław Łapiński link otwiera się w nowej karcie ,
• dr inż. Marta Prześniak-Welenc link otwiera się w nowej karcie ,
• dr hab. inż. Mirosław Sawczak,
• Eileen Yu,
• prof. dr hab. inż. Wojciech Sadowski link otwiera się w nowej karcie ,
• dr hab. inż. Kamila Sadowska link otwiera się w nowej karcie