玻璃基片上纳米碳管电极的集成

利用微波等离子体化学气相沉积法在玻璃孔穴中定位生长纳米碳管电极, 分析了负偏压对纳米碳管电极生长的影响. 该电极对铜离子的电化学检测性能分析结果表明, 所制备的纳米碳管电极具有良好的电化学检测性能, 位于－0.0100 V附近的铜离子的还原峰峰形良好, 其电流在铜离子浓度为0.01~0.30 mmol?L^-1时, 与Cu²⁺浓度呈良好的线性关系, 相关系数为0.9975, 且具有较好的长期稳定性和重现性.

Integration of Carbon Nanotubes Electrodes on Glass Substrate

Carbon nanotubes electrodes were prepared in the holes of glass directly by microwave plasma chemical vapor deposition. During the process of carbon nanotubes growth, the negative bias imposed on the substrate could improve the alignment of carbon nanotubes. The electrochemical behavior of CuSO₄ at the carbon nanotubes electrode was investigated. Compared to graphite electrode, carbon nanotubes had excellent electrochemical behavior for the analysis of Cu²⁺. The current had linearship with the Cu²⁺ concentration in the range of 0.01~0.30 mmol?L^-1, and the correlation coefficient was 0.9975. Because carbon nanotubes were integrated directly on the substrate, the stable response to Cu²⁺ solution showed that the carbon nanotubes electrodes had long-term stability.