Sánchez Samuel, Fàbregas Esteve, Pumera Martin
Biomaterial Systems Group, Biomaterials Center and International Center for Materials Nanoarchitectonics (MANA, WPI), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan.
Phys Chem Chem Phys. 2009 Jan 7;11(1):182-6. doi: 10.1039/b814599g. Epub 2008 Nov 6.
Electrochemical activation of carbon nanotube/polysulfone composite electrodes for enhanced heterogeneous electron transfer is studied. The physicochemical insight into the electrochemical activation of carbon nanotube/polymer composites was provided by transmission electron microscopy, Raman spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. Dopamine, ascorbic acid, NADH, and ferricyanide are used as a model redox system for evaluating the performance of activated carbon nanotube/polymer composite electrodes. We demonstrate that polymer wrapping of carbon nanotubes is subject to defects and to partial removal during activation. Such tunable activation of electrodes would enable on-demand activation of electrodes for satisfying the needs of sensing or energy storage devices.
研究了用于增强异质电子转移的碳纳米管/聚砜复合电极的电化学活化。通过透射电子显微镜、拉曼光谱、电化学阻抗谱和循环伏安法对碳纳米管/聚合物复合材料的电化学活化进行了物理化学洞察。多巴胺、抗坏血酸、烟酰胺腺嘌呤二核苷酸和铁氰化物用作评估活化碳纳米管/聚合物复合电极性能的模型氧化还原体系。我们证明，碳纳米管的聚合物包裹在活化过程中会出现缺陷并部分去除。这种可调节的电极活化将能够按需激活电极，以满足传感或能量存储设备的需求。
