| 毕浩宇,葛金宝,张雅,李燕.化学通报,2019,82(1):56-62. |
| Fe3O4@(SDS-HTlc)纳米复合物的制备及对甲基橙的吸附 |
| Synthesis and Adsorption Property of Fe3O4@(SDS-HTlc) Nanocomposite for Methyl Orange |
| 投稿时间：2018-08-12 修订日期：2018-09-17 |
| DOI： |
| 中文关键词: 十二烷基硫酸钠 磁性 类水滑石 甲基橙 吸附性能 |
| 英文关键词:sodium dodecyl sulfate magnetic hydrotalcite-like compound methyl orange adsorption property |
| 基金项目:山西省自然科学基金项目(201701D121034)、山西省重点学科建设经费、长治学院科研创新团队建设项目、长治学院大学生创新训练项目和长治学院“药用植物”学科群学生基金项目资助 |
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| 中文摘要: |
| 采用离子交换法制备了具有核-壳结构的磁性十二烷基硫酸钠改性类水滑石Fe3O4@(SDS-HTlc)纳米复合物，并利用透射电子显微镜、粉末X-射线衍射仪、红外光谱仪、电感耦合等离子体发射光谱仪、元素分析仪、接触角测定仪、比表面分析仪、微电泳仪和振动样品磁强计对其进行了表征。系统研究了Fe3O4@(SDS-HTlc)对甲基橙的吸附动力学和热力学。研究结果表明：Fe3O4@(SDS-HTlc)对甲基橙有较好吸附效果，吸附动力学曲线符合准二级动力学方程；吸附等温线符合linear方程，吸附量随体系pH值的增大和温度的升高均降低。在外部磁场下，30 s内可从水溶液中分离出Fe3O4@(SDS-HTlc)，这为去除水中疏水染料提供了简单的一步吸附处理方法。 |
| 英文摘要: |
| In this paper, magnetic hydrotalcite-like compound modified with sodium dodecylsulfate, Fe3O4@(SDS-HTlc) nanocomposite, was prepared by ion-exchange method. The samples were characterized by transmission electron microscope, powder X ray diffractometer, infrared spectrometer, inductively coupled plasma atomic emission spectrometry, elemental analyzer, contact angle measuring instrument, specific surface analyzer, electrophorese?instrument, and vibrating sample magnetometer. The adsorption property of Fe3O4@(SDS-HTlc) nanocomposite for methyl orange was studied by adsorption kinetics and thermodynamics. The experimental results showed that the adsorption kinetics conformed to the pseudo-second-order kinetic equation, and the adsorption isotherm agreed well with the linear equation. Fe3O4@(SDS-HTlc) had better adsorption capacity for methyl orange, and the adsorption amount decreased with increasing pH (and temperature). Fe3O4@(SDS-HTlc) nanocomposite can be easily separated from aqueous solution by the external magnetic field in 30 s, and may offer a simple single step adsorption treatment option to remove dye from water. |
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