利用碳纳米管吸附溶液中金属离子的研究进展王莹.pdf

Vol.38 No.3 　　　　　 38 3 ·32 · NEW CH EM ICAL MATERIA LS 2010 3 王　莹　贺岩峰 (长春工业大学, 长春 130012) 　　碳纳米管具有中空层状结构, 大的比表面积和长径比, 高的 学稳定性和热稳定性以及端帽、内腔、管壁容 易被修饰等特点, 是一种较为理想的吸附材料。综述了碳纳米管与吸附相关的结构和性质, 分析了经硝酸氧 处理过的 碳纳米管对溶液中金属离子的吸附作用原理, 以及pH 值、离子浓度对吸附作用的影响。讨论了将碳纳米管对金属离子 的吸附作用与分离富集技术相联系, 应用于元素分析测定,能够提高方法灵敏度, 降低了元素检出限。在仪器分析方面将 有巨大潜力。 　碳纳米管, 金属离子, 吸附, 应用, 分离富集 A review on adsorption of metal ions from solution by carbon nanotubes Wang Ying 　He Yanfeng (Changch n University of Technology ,Changch n 130012) Abstract 　Carbon nanot bes with layered str ct re are ideal adsorption materials.They have large s rface areas, high aspect ratios, high chemical stabilities and high thermal stabilities.The end caps, cavity and wall feat res of the car- bon nanot bes are easily modified.Related str ct res and properties abo t adsorption of carbon nanot bes w ere reviewed. The principle of adsorption of metal ions from sol tion by the carbon nanot bes treated by the nitric acid was analyzed.The effect s of pH, ion concentration on the adsorption were disc ssed.It was clear that the adsorption of metal ions by carbon nanot bes can be sed as an enrichment technology in elemental analysis to improve the method sensitivity and to lower the detection limit of the element.It is reasonable to s ppose that their presence and enormo s potential w ill lead to significant progress in instr mentation for chemical analysis. Key words　carbon nanot be, metal ion, adsorption, application 　　 , , 。, 。, , , 。, , , 。, , , , 。 。