Preparation of alumina supported on carbon nanotubes and its application in fluoride adsorption from an aqueous solution
Preparation of alumina supported on carbon nanotubes and its application in fluoride adsorption from an aqueous solution
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DOI：
10.1360/02tb9162
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发表时间：
2002-05
影响因子：
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通讯作者：
Shuguang Wang;Yan-hui Li;Dan Zhao;Cai-lu Xu;Z. Luan;Ji Liang;De-hai Wu
中科院分区：
文献类型：
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作者：
Shuguang Wang;Yan-hui Li;Dan Zhao;Cai-lu Xu;Z. Luan;Ji Liang;De-hai Wu
以碳纳米管和Al（NO3）3为原料，制备了碳纳米管负载氧化铝（Al 2 O3/CNT）新材料。X射线衍射（XRD）谱表明氧化铝是无定形的，扫描电子显微镜（SEM）图像显示CNT和氧化铝均匀混合。此外，还研究了氟离子在Al_2O_3/CNT表面的吸附行为，并与其它吸附剂进行了比较。结果表明，Al 2 O3/CNT具有较高的吸附容量，饱和吸附容量为39.4mg/g。在25 °C时，Al_2O_2/CNT的吸附量是γ-Al_2O_3的3.0-4.5倍，与伊拉-410树脂相当。Al 2 O3/CNT对氟离子的吸附等温线符合Freundlich方程，最适pH值为5.0 ~ 9.0。
A novel material, alumina supported on carbon nanotubes (Al2O3/CNT), was prepared from carbon nanotubes and Al(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 Al2O2/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.