The Adsorptive Ability of TiO2-pillared Montmorillonite for Lead (II) Cationic and Its Leaching

摘要：

　　In this thesis,TiO2-pillared montmorillonite was prepared by a sol-gel method.The sample was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM).The results show that the crystal phase of the sample is composed of anatase and montmorillonite.The microstructure of the sample is still layered structure.Furthermore,the XRD results indicate that the interlayer distance of crystal plane (001) of the montmorillonite left-shift obviously.In other words,its interlayer distance increases obviously.The adsorptive ability of the sample was tested with industry wastewater,which containing Pb2+.The results indicate that the adsorptive rate of sample for lead (II) cationic is 99.9%.After analyzing with the interlayer space,it indicated that the increasing of the interlayer space is good for the adsorptive ability.And the adsorptive ability reached a maximum when the interlayer space was 1.339 nm.The TiO2-pillared montmorillonite absorbed Pb2+ saturatedly was impregnated into nitric acid solution to dissolve the lead cationic.The results show that the concentration of the nitric acid is higher,the leaching rate of the lead cationic is higher.And it reached a maximum when the concentration of the nitric acid is 2 mol/L after leaching for 20 min.Introduction.

关键词： TiO2-pillared montmorillonite Lead cathode Adsorptive ability Leaching rate

作者: Yuan Cheng Weimiao Xie Xuanhui Zhang Dan Chen Guohua Li

作者单位: School of Chemical Engineering and Materials Science, Zhejiang University of Technology,Hangzhou 310 School of Chemical Engineering and Materials Science, Zhejiang University of Technology,Hangzhou 310

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 469-474

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）