中文摘要
本课题发展了空气氧化、氢气还原和盐酸回流相结合的纯化碳纳米管的新方法；首次采用电泳沉积法制备了以碳纳米管为涂层以铂丝为涂层载体的固相微萃取(SPME)纤维；所制备的纤维具有耐有机溶剂、耐高温、不易折断、使用寿命长的特点，并且对水中极性内分泌干扰物（EDCs，酚类和苯胺类化合物）具有很高的萃取效率，建立了水中极性EDCs的新分析方法；利用碳纳米管纤维的导电性，在纤维上加电位，采用电化学控制(EC)-SPME技术，展现碳纳米管纤维用于萃取可离子化有机化合物的潜力；建立了水中无机阴离子的EC-SPME-IC分析新方法。上述研究结果证明，所制备的碳纳米管纤维的综合性能在现有的SPME纤维中居于领先地位。本课题的成果在一定程度上弥补长期以来SPME技术在应用中遇到的一些诸如难于萃取强极性化合物和离子化合物、萃取纤维机械强度低、涂层的耐热耐溶剂性能差等缺陷，推动SPME技术的进步，并拓展碳纳米管这种新兴材料的应用领域。已发表SCI论文3篇，接受1篇，2篇正在撰写中，并申请发明专利1项。
英文摘要
A novel method, which was the combination of air and hydrogen gas annealing followed by hydrochloric acid, was developed to purify carbon nanotubes(CNTs). For the first time, electrophoretic deposition was proposed to prepare solid-phase microextraction(SPME) fiber coated with CNTs. The prepared CNTs fiber was resistant to organic solvents and unbreakable, had high thermal stablity and long working life. Furthermore, the CNTs fiber had high extraction efficiency for the polar endocrine disrupting chemicals (EDCs, phenols and annilines) in water，the analytical methods for these compounds based on CNTs fiber had been estabilshed. Due to its conductive nature, the CNTs fiber could be applied in electro-chemically controlled SPME to extract ions in water. The potential of CNTs fiber to extract ionized annilines via EC-SPME had been shown, and a new analytical method based on CNTs fiber and EC-SPME-IC had been estabilshed. These results show that the prepared CNTs fiber has the excellent comprehensive properties. The prepared CNTs fiber overcomes the inherent drawbacks of the conventional SPME fibers, such as low extraction efficiency for polar compounds and ions, relatively low operating temperature, instability and swelling in organic solvents, easy breakage. To some extent, this study make some progress in SPME technique, and widen the application of CNTs.
结题摘要
本课题发展了空气氧化、氢气还原和盐酸回流相结合的纯化碳纳米管的新方法；首次采用电泳沉积法制备了以碳纳米管为涂层以铂丝为涂层载体的固相微萃取(SPME)纤维；所制备的纤维具有耐有机溶剂、耐高温、不易折断、使用寿命长的特点，并且对水中极性内分泌干扰物（EDCs，酚类和苯胺类化合物）具有很高的萃取效率，建立了水中极性EDCs的新分析方法；利用碳纳米管纤维的导电性，在纤维上加电位，采用电化学控制(EC)-SPME技术，展现碳纳米管纤维用于萃取可离子化有机化合物的潜力；建立了水中无机阴离子的EC-SPME-IC分析新方法。上述研究结果证明，所制备的碳纳米管纤维的综合性能在现有的SPME纤维中居于领先地位。本课题的成果在一定程度上弥补长期以来SPME技术在应用中遇到的一些诸如难于萃取强极性化合物和离子化合物、萃取纤维机械强度低、涂层的耐热耐溶剂性能差等缺陷，推动SPME技术的进步，并拓展碳纳米管这种新兴材料的应用领域。已发表SCI论文3篇，接受1篇，2篇正在撰写中，并申请发明专利1项。