Preparation of alumina supported on carbon nano-tubes and its application in fluoride adsorption from an aqueous solution

被引：0
|
作者：
WANG Shuguang
Department of Mechani
机构：
来源：
Chinese Science Bulletin | 2002年 / 09期
基金：
中国国家自然科学基金;
关键词：
carbon nanotube; alumina; fluoride removal; composite material;
D O I：
暂无
中图分类号：
O647.3 [吸附];
学科分类号：
070304 ; 081704 ;
摘要：
A novel material, alumina supported on carbon nanotubes (Al2O3/CNT), was prepared from carbon nano-tubes and A1(NO3)3. X-ray diffraction (XRD) spectra demonstrate that alumina is amorphous, and scanning electron microscope (SEM) images show that CNT and alumina are homogeneously mixed. Furthermore, the fluoride adsorption behavior on the surface of Al2O3/CNT has been investigated and compared with other adsorbents. The results indicate that Al2O3/CNT has a high adsorption capacity, with a saturation adsorption capacity of 39.4 mg/g. It is also found that the adsorption capacity of Al2O3/CNT is 3.0-4.5 times that of γ-Al2O3 while almost equal to that of IRA-410 polymeric resin at 25°C . The adsorption isotherms of fluoride on Al2O3/CNT fit the Freundlich equation well, and optimal pH ranging from 5.0 to 9.0.
引用
收藏
页码：722 / 724
页数：3
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