Citation: ZHENG Guang-Wei, DU Yu-Cheng, HOU Rui-Qin, SUN Guang-Bing, WANG Jin-Shu, WU Jun-Shu. Fabrication and Highly Efficient Adsorption for Cs+ and Pb2+ of γ-AlOOH/Al2O3 Modified Diatomite[J]. Chinese Journal of Inorganic Chemistry, ;2015, (5): 930-938. doi: 10.11862/CJIC.2015.149
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The composite adsorption materials modified by wispy nanostructure γ-AlOOH or γ-Al2O3 were prepared via one-step hydrothermal method by using crystalline aluminum chloride (AlCl3·6H2O) as the resource of aluminum, sodium dodecylbenzenesulfonate (SDBS) as template and diatomite as the substrate. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis/differential scanning calorimetry (TG/DSC), and N2 adsorption-desorption measurement. The adsorption capacity for Cs+ and Pb2+ of the samples were investigated. It was found that the samples showed superb adsorption properties for Cs+ and Pb2+. The maximal removal efficiency of the γ-AlOOH/diatomite and γ-Al2O3/diatomite for Cs+ were 98.9 and 99.6%, respectively, and the maximum adsorption capacities for Pb2+ were 357.1 and 416.7 mg·g-1, respectively. Both of the adsorption models for Pb2+ were consistent with the Langmuir adsorption model.
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