金属有机骨架材料MIL-53(Al)对污水中Ni^2＋的吸附研究  

Research of Metal Organic Frameworks MIL-53(Al) for Adsorption Ni^(2+) in Waste Water

作　　者：龙萍 谭海燕[2] 刘畅[2] 蒲春霞[2] 

机构地区：[1]武汉市城市排水发展有限公司,武汉430000 [2]湖北民族学院化学与环境工程学院,恩施445000

出　　处：《武汉理工大学学报》2016年第6期79-83,116,共6页Journal of Wuhan University of Technology

基　　金：湖北省教育厅科学研究计划指导性资助项目(B2016098)

摘　　要：采用溶剂热法合成了金属有机骨架材料MIL-53(Al)用于对污水中Ni^(2+)的处理研究,并与Al_2O_3对污水中Ni^(2+)的去除效果进行了比较。样品通过热重-差热(TG)、红外光谱(FTIR)、X射线衍射(XRD)、N2物理吸附-脱附等方法进行表征。采用光度吸收法分析污水中Ni^(2+)在处理前和处理后的浓度差别,结果显示,MIL-53(Al)对Ni^(2+)的去除率达到92%,Al_2O_3对Ni^(2+)的去除率达到82%,MIL-53(Al)对污水中Ni^(2+)的去除能力明显优于多孔材料Al_2O_3。Metal-organic framework （MOF） material MIL-53 （Al） （MIL.. Materials of Institut Lavoisier） was prepared by solvothermal method, serving as a sorbing material of Ni^2＋ for treatment of waste water. Comparison on the adsorbing performances between the MIL-53（Al） and the Al2O3 adsorption materials was onducted to understand the adsorption behavior of the adsorbent. The adsorbent were characterized by thermogravimetric-differential scanning calorimetry （TG-DSC）, Fourier-transform infrared spectroscopy （FT-IR）, N2 adsorption-desorption, and X-ray diffraction （XRD）. The concentration difference of Ni^2＋ in wastewater before treatment and after treatment was analyzed by spectrophotometry. Indeed, the adsorption material MIL-53（Al） exhibited much higher adsorption capacity than Al2O3 adsorbent in Niz＋ test, with 92% removal rate on MIL-53（Al） and with 82% removal rate on Al2O3.

关 键 词：金属有机骨架材料 吸附 污水处理 环境保护 去除率 

分 类 号：TQ426.91[化学工程]