| 氨基功能化CoFe2O4-SiO2 磁性复合材料的制备及其在去除水中重金属离子的吸附性能 |
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| 引用本文： | 任春溶,丁新更,付慧琴,李文琪,巫华婷,杨辉.氨基功能化CoFe2O4-SiO2 磁性复合材料的制备及其在去除水中重金属离子的吸附性能[J].稀有金属材料与工程,2018,47(S2):134-139. |
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| 作者姓名： | 任春溶 丁新更 付慧琴 李文琪 巫华婷 杨辉 |
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| 作者单位： | 浙江大学材料科学与工程学院,浙江大学材料科学与工程学院,浙江大学材料科学与工程学院,浙江大学材料科学与工程学院,浙江大学材料科学与工程学院,浙江大学材料科学与工程学院 |
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| 基金项目： | 国家高技术研究发展计划（863计划）(No. 2015AA034701) |
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| 摘 要： | 钴-铁氧体纳米粒子(CoFe2O4 NPs)通过改良的共沉淀法制备,CoFe2O4-SiO2磁性复合材料通过st?ber法合成,为了吸附重金属离子CoFe2O4-SiO2进行了氨基功能化。这种吸附剂的晶体结构、形貌、颗粒尺寸、化学组成和分子结构采用X射线衍射图谱(XRD)、扫描电子显微镜(SEM)以及傅里叶变换红外光谱(FTIR)进行表征。此复合材料具有优良的磁性能,由于其高的饱和磁化强度,磁铁可以将其在30秒内快速分离。同时,CoFe2O4 NPs的磁性能可以通过烧结温度进行调节,随烧结温度提高,磁性能增强。溶液的pH及反应时间对重金属离子吸附的影响进行了研究,此外此吸附剂对Cu (II)、Cd (II)、Mn (II) 和Zn (II)具有较高的吸附容量和去除率,这一结果使此复合材料可以潜在应用于废水中重金属离子的吸附上。
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| 关 键 词： | 钴-铁氧体 SiO2 磁性 吸附 重金属 |
| 收稿时间： | 2017/12/5 0:00:00 |
| 修稿时间： | 2017/12/5 0:00:00 |
Fabrication of amino-functionalized CoFe2O4-SiO2 magnetic composites and their adsorption performance for removal of heavy metal ions from water |
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| Ren Chunrong,Ding Xingeng,Fu Huiqin,Li Wenqi,Wu Huating and Yang Hui.Fabrication of amino-functionalized CoFe2O4-SiO2 magnetic composites and their adsorption performance for removal of heavy metal ions from water[J].Rare Metal Materials and Engineering,2018,47(S2):134-139. |
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| Authors: | Ren Chunrong Ding Xingeng Fu Huiqin Li Wenqi Wu Huating and Yang Hui |
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| Affiliation: | Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University |
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| Abstract: | The cobalt-ferrite nanoparticles (CoFe2O4 NPs) were prepared using the modified co-precipitation method and the CoFe2O4-SiO2 magnetic composites were synthesized via st?ber step. The CoFe2O4-SiO2 was also amino-functionalized to adsorb heavy metal ions. The crystalline phase, morphologies, particle size, chemical compositions and chemical structure of the absorbent have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The composites exhibited excellent magnetic properties with high saturated magnetization and can be separated by a magnet within 30 seconds, and the saturation magnetization (Ms) of CoFe2O4 NPs can be adjusted by sintering temperature,increased with increasing the temperature. The effect of pH and reaction time on the adsorption of CoFe2O4-SiO2-NH2 for Cu (II) was examined. And the amino-functionalized CoFe2O4-SiO2 (CoFe2O4-SiO2-NH2) showed high adsorption capacity and the removal efficiency for Cu (II), Cd (II), Zn (II) and Mn (II), which makes great potential application on the heavy metal wastewater treatment. |
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| Keywords: | cobalt-ferrite SiO2 magnetism adsorption heavy metal |
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