2; 磁性; 吸附; 重金屬"/> 2O4 NPs)通過(guò)改良的共沉淀法制備,CoFe2O4-SiO2磁性復(fù)合材料通過(guò)st?ber法合成,為了吸附重金屬離子CoFe2O4-SiO2進(jìn)行了氨基功能化。這種吸附劑的晶體結(jié)構(gòu)、形貌、顆粒尺寸、化學(xué)組成和分子結(jié)構(gòu)采用X射線(xiàn)衍射圖譜(XRD)、掃描電子顯微鏡(SEM)以及傅里葉變換紅外光譜(FTIR)進(jìn)行表征。此復(fù)合材料具有優(yōu)良的磁性能,由于其高的飽和磁化強(qiáng)度,磁鐵可以將其在30秒內(nèi)快速分離。同時(shí),CoFe2O4 NPs的磁性能可以通過(guò)燒結(jié)溫度進(jìn)行調(diào)節(jié),隨燒結(jié)溫度提高,磁性能增強(qiáng)。溶液的pH及反應(yīng)時(shí)間對(duì)重金屬離子吸附的影響進(jìn)行了研究,此外此吸附劑對(duì)Cu (II)、Cd (II)、Mn (II) 和Zn (II)具有較高的吸附容量和去除率,這一結(jié)果使此復(fù)合材料可以潛在應(yīng)用于廢水中重金屬離子的吸附上。"/>

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氨基功能化CoFe2O4-SiO2 磁性復(fù)合材料的制備及其在去除水中重金屬離子的吸附性能
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浙江大學(xué)材料科學(xué)與工程學(xué)院,浙江大學(xué)材料科學(xué)與工程學(xué)院,浙江大學(xué)材料科學(xué)與工程學(xué)院,浙江大學(xué)材料科學(xué)與工程學(xué)院,浙江大學(xué)材料科學(xué)與工程學(xué)院,浙江大學(xué)材料科學(xué)與工程學(xué)院

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國(guó)家高技術(shù)研究發(fā)展計(jì)劃（863計(jì)劃）(No. 2015AA034701)


Fabrication of amino-functionalized CoFe2O4-SiO2 magnetic composites and their adsorption performance for removal of heavy metal ions from water
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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

Fund Project:

The National High Technology Research and Development Program of China (863 Program) (No. 2015AA034701)

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    摘要:

    鈷-鐵氧體納米粒子(CoFe2O4 NPs)通過(guò)改良的共沉淀法制備,CoFe2O4-SiO2磁性復(fù)合材料通過(guò)st?ber法合成,為了吸附重金屬離子CoFe2O4-SiO2進(jìn)行了氨基功能化。這種吸附劑的晶體結(jié)構(gòu)、形貌、顆粒尺寸、化學(xué)組成和分子結(jié)構(gòu)采用X射線(xiàn)衍射圖譜(XRD)、掃描電子顯微鏡(SEM)以及傅里葉變換紅外光譜(FTIR)進(jìn)行表征。此復(fù)合材料具有優(yōu)良的磁性能,由于其高的飽和磁化強(qiáng)度,磁鐵可以將其在30秒內(nèi)快速分離。同時(shí),CoFe2O4 NPs的磁性能可以通過(guò)燒結(jié)溫度進(jìn)行調(diào)節(jié),隨燒結(jié)溫度提高,磁性能增強(qiáng)。溶液的pH及反應(yīng)時(shí)間對(duì)重金屬離子吸附的影響進(jìn)行了研究,此外此吸附劑對(duì)Cu (II)、Cd (II)、Mn (II) 和Zn (II)具有較高的吸附容量和去除率,這一結(jié)果使此復(fù)合材料可以潛在應(yīng)用于廢水中重金屬離子的吸附上。

    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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任春溶,丁新更,付慧琴,李文琪,巫華婷,楊輝.氨基功能化CoFe2O4-SiO2 磁性復(fù)合材料的制備及其在去除水中重金屬離子的吸附性能[J].稀有金屬材料與工程,2018,47(S2):134~139.[Ren Chunrong, Ding Xingeng, Fu Huiqin, Li Wenqi, Wu Huating, 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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  • 收稿日期:2017-12-05
  • 最后修改日期:2017-12-05
  • 錄用日期:2018-02-01
  • 在線(xiàn)發(fā)布日期: 2018-11-01
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