氨基修饰介孔二氧化硅纳米纤维的制备及Cu^(2+)吸附性能研究  

Synthesis of Amino-Modified Mesoporous Silica Nanofibers and Its Adsorption Property Toward Cu^(2+)

作　　者：王子峰[1] 柳海兰[1] 姜男哲[1] 

机构地区：[1]延边大学工学院,延吉133002

出　　处：《材料导报（纳米与新材料专辑）》2013年第2期20-22,共3页

基　　金：国家自然科学基金(21263026);吉林省教育厅项目(2012-7)

摘　　要：对用静电纺丝法制备的介孔二氧化硅纳米纤维(MSFs)进行氨基改性,通过TGA、FT-IR、电子扫描显微镜(SEM)、电子透射显微镜(TEM)、氮气吸附-脱附以及电感耦合等离子体质谱(ICP-MS)对改性得到的介孔纤维的结构和性能进行表征。实验结果显示:当氨基修饰后,介孔二氧化硅纳米纤维的比表面积和孔体积都有所减小,但孔道结构未被破坏。水溶液中铜离子吸附实验表明:随着氨基修饰程度的增加,氨基修饰介孔二氧化硅纳米纤维对铜离子的吸附能力先增加后减小,最大去除率达88.8%。Mesoporous silica nanofibers were prepared by electrospinning.Then the mesoporous silica nanofibers were modified with different amount of 3-aminopropyltriethoxysilane （APTES）.The physicochemical properties of the modified silica nanofibers were characterized by scanning electron microscopy （SEM）,transmission electron microscopy （TEM）,fourier transform infrared spectroscopy （FT-IR）,N2 adsorption-desorption isotherms,thermogravimetric analysis （TGA）,and inductively coupled plasma mass spectrometry （ICP-MS）.The results indicated that the pore structure has been never destroyed after the modification though the specific surface area and total pore volume decreased.The adsorption properties were investigated by Cu2＋ removal from aqueous solutions,with increasing degree of amino modification,adsorption of Cu2＋ on modified mesoporous silica nanofibers increased firstly and then decreased,and then biggest removal rate is 88.8%.

关 键 词：多孔材料 静电纺丝 氨基修饰 CU2+ 吸附 

分 类 号：TQ424.1[化学工程]