Abstract
In this paper, conductive nitrogen doped diamond-like carbon (N-DLC) films were deposited with dc magnetron sputtering, and their performance in acids as well as application as working electrodes for lead stripping analysis had been studied. It was found that N-DLC film has a double-layer capacitance about 3.45 μF·cm-2 in 0.5 M H2SO4, a wide potential window in acids, and a high catalytic activity for Cl 2/Cl-. The N-DLC electrodes also had a high signal of Pb2+/Pb0, and their stripping detection limit without mercury coating was about 76 nM in 0.1 M KCl (pH1) solution. Their double layer capacitance, width of potential window, and stripping detection limit are comparable with that of boron doped diamond film electrodes. N-DLC film has shown to be a suitable work electrode material for electrochemical sensors.
| Original language | English |
|---|---|
| Pages (from-to) | 467-470 |
| Number of pages | 4 |
| Journal | Materials Science Forum |
| Volume | 437-438 |
| DOIs | |
| State | Published - 2003 |
| Externally published | Yes |
| Event | Proceedings of the 2nd International Conference on Advanced Materials Processing - Singapore, Singapore Duration: 2 Dec 2002 → 4 Dec 2002 |
Keywords
- Diamond-Like Carbon Film
- Electrochemical Characteristics
- Electrode
- Nitrogen Doping
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