【摘要】 以溴化十六烷基三甲铵(CTAB)为模板剂,采用溶胶-凝胶法合成介孔纳米γ-Al2O3,用透射电镜(TEM)、比表面测定(BET)、X射线衍射(XRD)、和N2的吸附-脱附技术、Zetaplus电位测定,对所得的介孔纳米γ-Al2O3进行了表征。考察了介孔纳米γ-Al2O3在静态条件下对La(Ⅲ)的吸附性能。探讨了溶液的初始浓度、pH值、时间和温度对吸附性能的影响。结果表明:介孔纳米γ-Al2O3对La(Ⅲ)有很好的吸附性能,其吸附行为符合Freundlich吸附等温式。更多还原

【Abstract】 The meso-porous nanomaterγ-Al2O3 powders are synthesized by sol-gel method using Cetyltrimethyl Ammonium Bromide(CTAB) as template and characterized by TEM,XRD,BET,N2 adsorption-desorption isotherm and Zeta potential measurements.The adsorption characterization of the meso-porous nanomaterγ-Al2O3 powders to La(Ⅲ) in static condition are explored,and the effects of the concentration,pH,time,temperature on adsorption capacity are investigated.It shows that the meso-porous nanomaterγ-Al2O3 powders have strong adsorption capacity for rare earth La(Ⅲ) at a given pH value,and the adsorption process complies with Freundlich adsorption model.更多还原