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以碳纳米管与水溶液界面的阳离子表面活性剂十八烷基三甲基溴化铵(ODTMA)超分子自组装结构为模板,在水溶液体系成功地合成了以碳纳米管为核,以介孔硅基材料为壳的碳纳米管/有序介孔氧化硅核壳纳米线.用透射电子显微镜、X射线衍射以及低温N2吸/脱附对样品进行了表征.结果表明,核壳纳米线具有规整的p6mm有序孔道结构、高比表面和集中的孔径分布.碳纳米管/有序介孔氧化硅核壳纳米线的形貌可通过溶液的pH进行控制.此外,碳纳米管/有序介孔氧化硅核壳纳米线在水和乙醇等极性溶剂中具有良好的分散性能,有望应用于生物传感器、纳米探针以及储能等领域。
The self-assembly of octadecyltrimethylammonium bromide (ODTMA), a cationic surfactant at the interface between carbon nanotubes and aqueous solution, was used as a template to successfully synthesize a series of nanostructured carbon nanotubes The materials were shell carbon nanotubes / ordered mesoporous silica core-shell nanowires. The samples were characterized by transmission electron microscopy, X-ray diffraction and cryogenic N2 adsorption / desorption. The results show that the core- p6mm ordered pore structure, high specific surface area and concentrated pore size distribution.The morphology of carbon nanotubes / ordered mesoporous silica core-shell nanowires can be controlled by the pH of the solution.In addition, carbon nanotubes / ordered mesopores Silicon oxide core-shell nanowires have good dispersion properties in polar solvents such as water and ethanol, and are expected to be applied to biosensors, nano-probes and energy storage.