高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 95.

• 论文 • 上一篇    下一篇

碳纳米管负载氧化铝材料的制备及其吸附水中氟离子的研究

王曙光1, 李延辉2, 赵丹1,3, 赵华章1, 徐才录2, 栾兆坤1, 梁吉2, 吴德海2   

  1. 1. 中国科学院生态环境研究中心, 环境水化学国家重点实验室, 北京 100085;
    2. 清华大学机械工程系, 北京 100084;
    3. 东北大学理学院应用化学系, 沈阳 110004
  • 收稿日期:2001-11-12 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 王曙光(1971年出生),男,博士研究生,从事环境水化学研究.E-mail:Wangshg71@263.net E-mail:Wangshg71@263.net
  • 基金资助:

    国家自然科学重点基金(批准号:59838300);国家自然科学基金(批准号:50178067)资助

Studies on the Preparation of Alumina Supported on Carbon Nanotubes and Defluorination from Absorbed Water

WANG Shu-Guang1, LI Yan-Hui2, ZHAO Dan1,3, ZHAO Hua-Zhang1, XU Cai-Lu2, LUAN Zhao-Kun1, LIANG Ji2, WU De-Hai2   

  1. 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
    3. Department of Chemistry of Science College, Northeast University, Shenyang 110004, China
  • Received:2001-11-12 Online:2003-01-24 Published:2003-01-24

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被引次数

132

摘要： 采用碳纳米管和硝酸铝制备了碳纳米管负载氧化铝新型除氟材料.X射线衍射检测发现,当焙烧温度低于850℃时,氧化铝为无定形态,当焙烧温度为1050℃时,氧化铝为α形态,扫描电子显微镜观察到碳纳米管与氧化铝均匀掺杂.同时用碳纳米管负载氧化铝复合材料进行水中氟离子的吸附研究,结果表明,该复合材料具有优良的除氟效能.氧化铝负载量为30%、焙烧温度为450℃条件下制备的碳纳米管负载氧化铝复合材料的吸附除氟能力是γ-氧化铝的2.0～3.5倍,与IRA-410聚合树脂的吸附除氟能力相当,适宜pH范围为5.0～9.0,吸附等温线符合Freundlich方程.

关键词: 碳纳米管, 负载氧化铝, 吸附, 除氟

Abstract: A novel material for fluoride removal, alumina supported on carbon nanotubes (Al2O3/CNT), was prepared from carbon nanotubes and aluminium nitrate. X-ray diffraction(XRD) spectra demonstrate that alumina was amorphous at calcination temperature lower than 850 ℃ while it was α-Al2O3 at 1 050 ℃. Scanning electron microscope(SEM) images showed that the CNT and alumina were homogenously mixed. Furthermore, the fluoride adsorption behavior on the surface of Al2O3/CNT was investigated. The results indicated that Al2O3/CNT had a high adsorption capacity. The fluoride adsorption capacity of the Al2O3/CNT, which was prepared under the conditions of 450 ℃ calcination temperature and 30% Al2O3 supported, was 2.0-3.5 times that of γ-Al2O3 and almost equals to that of IRA-410 polymeric resin. The adsorption isotherms of fluoride on Al2O3/CNT fit the Freundlich equation well, and optimal pH ranging from 5.0 to 9.0.

Key words: Carbon nanotubes, Supported alumina, Adsorption, Defluoride

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