| Autor: |
Haziri, Veton, Berisha, Avni, Boily, Jean Francois |
| Předmět: |
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| Zdroj: |
International Joint Science Congress of Materials & Polymers; 2020, p80-80, 1p |
| Abstrakt: |
The study of the water/gas bubble interface is essential to understand the interaction of oxygen bubbles produced at working electrode. The formed gas bubbles as observed to migrate against the direction of the electrical field, an indication of their negative charge caused by the hydroxide layer at the bubble/water interface. In this study, the Au surface is grafted by hydrophobic nano-layer (derived from benzenediazonium). Oxygen molecules were generated by applying a positive potential on the tip of the working electrode (a platinum electrode). Afterwards, the SECM tip is approached toward the grafted substrate [Au(111)-phenyl] and the oxygen bubble was squeezed onto the top of the layer and then EIS measurements were obtained. An electrochemical system (EIS) can be modeled by an equivalent circuit. EIS data was analyzed using a Matlab code developed in our group. Electrochemical impedance spectroscopy measurements were achieved by applying an alternating current of 50 mV at 51 frequencies. EIS gave important results regarding the electrochemical behavior of the system. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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