乙二胺四丙酸修饰的MCM-41的合成及其对水中铜离子的吸附研究  

Synthesis and application of EDTP-modified MCM-41 to remove Cu^(2+) from water

作　　者：李儒[1] 李冰[1] 谭佳[1] 鲁奇林[1] 

机构地区：[1]渤海大学化学化工与食品安全学院,锦州121013

出　　处：《食品安全质量检测学报》2016年第2期774-778,共5页Journal of Food Safety and Quality

基　　金：辽宁省食品安全重点实验室课题项目(LNSAKF 2011018)~~

摘　　要：目的合成介孔材料MCM-41-(CH_2)_3NH_2-EDTP,并初步研究其对水中铜离子吸附性能。方法以硅酸钠作为硅源,十六烷基三甲基溴化铵(CTAB)作为结构模板剂,在碱性条件下,利用水热法合成了纯硅源的MCM-41介孔分子筛。用3-氨丙基三乙氧基硅烷(APTES)和正硅酸乙酯(TEOS)对MCM-41介孔分子筛进行功能化修饰,成功得到了氨丙基修饰的MCM-41。将其与乙二胺四丙酸(EDTP)反应制得了MCM-41-(CH_2)_3NH_2-EDTP。采用X射线粉末衍射(XRD)和傅里叶红外光谱(FT-IR)表征手段对合成的新型功能化介孔材料进行表征。结果结果表明,MCM-41-(CH_2)_3NH_2-EDTP成功合成,乙二胺四丙酸改性的MCM-41对铜离子的吸附量明显高于纯MCM-41的吸附量。结论乙二胺四丙酸的成功嫁接使介孔材料在吸附性方面有很大提高,在水安全检测方面有很好的应用前景。Objective To study adsorption properties of Cu^（2＋） by functionalized mesoporous material MCM-41-（CH_2）_3NH_2-EDTP. Methods The MCM-41 were synthesized by hydrothermal method under alkaline conditions, using sodium silicate as source of silicon and cetyltrimethyl ammonium bromide as template. The modified MCM-41-（CH_2）_3NH_2 was modified by 3-aminopropyltrimethoxysilane（APTS） and ethylsilicate（TEOS）, then reacted with EDTP, which succeeded to obtain MCM-41-（CH_2）_3NH_2-EDTP. Assemblies were characterized by XRD, FT-IR and the adsorption of Cu^（2＋） were preliminary investigated. Results The adsorption of Cu^（2＋） by modified-EDTP MCM-41 was better than the adsorption of pure MCM-41. Conclusion After EDTP modified, the adsorption capacity can be improved obviously. The functionalized mesoporous material MCM-41-（CH_2）_3-EDTP has a promising prospect in inspection of water safety.

关 键 词：MCM-41 乙二胺四丙酸 吸附 铜离子 

分 类 号：TB383.4[一般工业技术—材料科学与工程] O647.3[理学—物理化学]