| 介孔磁性微球的制备表征及其在环境中的应用 |
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| 引用本文： | 吴四华,黄进,许东芳,施阳,陈锐,何其庄.介孔磁性微球的制备表征及其在环境中的应用[J].环境科学与技术,2011,34(12):74-78. |
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| 作者姓名： | 吴四华 黄进 许东芳 施阳 陈锐 何其庄 |
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| 作者单位： | 教育部资源化学重点实验室,上海师范大学生命与环境科学学院,上海200234 |
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| 基金项目： | 教育部资源化学重点实验室、上海市重点学科建设项目(S30406) |
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| 摘 要： | 文章在Fe3O4(magnetite)纳米粒子的表面包覆一层SiO2(silica),再以十六烷基三甲基溴化铵(CTAB)表面活性剂作为结构导向剂,包覆一层介孔SiO2,形成一种核壳式介孔磁性二氧化硅材料(MS),然后在其表面引进巯基(mercapto)从而成为一种新型巯基修饰的磁性二氧化硅载体(MMS).这种材料是介...
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| 关 键 词： | 介孔 核壳式磁性二氧化硅 巯基改性 镉离子 |
Preparation and Characterization of Mesoporous Magnetic Nanoparticles and Their Usage in Environment |
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| WU Si-hua,HUANG Jin,XU Dong-fang,SHI Yang,CHEN Rui,HE Qi-zhuang.Preparation and Characterization of Mesoporous Magnetic Nanoparticles and Their Usage in Environment[J].Environmental Science and Technology,2011,34(12):74-78. |
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| Authors: | WU Si-hua HUANG Jin XU Dong-fang SHI Yang CHEN Rui HE Qi-zhuang |
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| Institution: | WU Si-hua,HUANG Jin,XU Dong-fang,SHI Yang,CHEN Rui,HE Qi-zhuang(Key Laboratory of Resource Chemistry of Ministry of Education,School of Life and Environmental Science,Shanghai Normal University,Shanghai 200234,China) |
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| Abstract: | With cetyltrimethyl ammonium bromide(CTAB) surfactants as structure-directing agents,SiO2 was covered onto the surface of Fe3O4 nanoparticles and then covered with another layer of mesoporous SiO2 to form core-shell magnetic silica(MS).Then MS was modified with-SH to form a novel adsorbent support MMS,which is mesoporous and magnetizable,with a diameter of 300~450 nm,surface area of 469 m2/g,pore size of 3.1 nm,and saturation magnetization of 28.1 emu/g.MMS was applied to adsorb Cd2+ in the solution.Results... |
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| Keywords: | mesoporous core-shell silicon dioxide mercapto modification cadmium ions |
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