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 Cu2+ from water

中文关键词:  MCM-41  乙二胺四丙酸  吸附  铜离子

英文关键词:MCM-41  EDTP  adsorption  Cu2+

中文摘要:

      目的 合成介孔材料MCM-41-(CH2)3NH2-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-(CH2)3NH2-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-(CH2)3NH2-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。

英文摘要:

      Objective To study adsorption properties of Cu2+ by functionalized mesoporous material MCM-41-(CH2)3NH2-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-(CH2)3NH2 was modified by 3-aminopropyltrimethoxysilane(APTS) and ethylsilicate (TEOS), then reacted with EDTP, which succeeded to obtain MCM-41-(CH2)3NH2-EDTP. Assemblies were characterized by XRD, FT-IR and the adsorption of Cu2+ were preliminary investigated. Results The adsorption of Cu2+ 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-(CH2)3-EDTP has a promising prospect in inspection of water safety.