化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (6) : 271-275. DOI: 10.19817/j.cnki.issn 1006-3536.2021.06.059

开发与应用

儿茶素功能化Fe₃O₄磁性纳米粒子的合成及其对重金属离子去除的研究

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Synthesis of catechin-functionalized Fe₃O₄ magnetic nanoparticles and their removal of heavy metal ion

Shi Yuzhe^1,2, Sun Congcong^1,2, Li Jingchao^1,2, Deng Shixian^1,2, Zhao Baihan^1,2, Liu Zhiguo^1,2

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Received		Published
2020-03-17		2021-06-20
Issue Date	Revised Date
2021-06-29	2020-03-17

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摘要

采用水热法合成了水溶性儿茶素功能化的Fe₃O₄纳米粒子。通过傅立叶变换红外光谱、X射线光电子能谱、原子力显微镜、X射线衍射和磁性测试对制备的Fe₃O₄纳米复合材料进行了表征。结果表明,Fe₃O₄纳米粒子具有立方尖晶石结构,表面覆盖着儿茶素。儿茶素功能化Fe₃O₄纳米粒子具有很强的磁性,可以利用永磁体进行收集。所得的Fe₃O₄纳米粒子具有良好的稳定性,并可以在水中重新分散。在此基础上,实验了儿茶素功能化Fe₃O₄纳米颗粒吸附水中的重金属离子效果。原子吸收测定结果表明,儿茶素功能化Fe₃O₄纳米粒子对水中Cu²⁺、Cd²⁺和Pb²⁺的去除率很高,有望应用于废水中重金属离子的处理。

Abstract

Catechin-functionalized Fe₃O₄ nanoparticles were synthesized via a hydrothermal approach.The obtained Fe₃O₄ nanocomposites were characterized by fourier transform infrared spectroscopy (FT-IR),hysteresisloop,atomic force microscope(AFM),and X-ray diffraction (XRD).The results revealed that the Fe₃O₄ nanoparticles had cubic spinel structure and capped by catechin outside.In addition,the catechin-functionalized Fe₃O₄ nanoparticles had strong magnetic properties,and can be manipulated by a permanent magnet.The obtained Fe₃O₄ nanoparticles were quite stable and can be re-dispersed in water.Furthermore,the catechin-functionalized Fe₃O₄ nanoparticles can be utilized to adsorb the heavy metal ions in water.The primary results indicated that the catechin-functionalized Fe₃O₄ nanoparticles had high removal rate for Cu²⁺,Cd²⁺ and Pb²⁺ in water.Taken together,the catechin-functionalized Fe₃O₄ nanoparticles were expected to be applied in the removal of heavy metal ions in wastewater.

关键词

儿茶素 / 四氧化三铁 / 纳米粒子 / 重金属离子

Key words

catechin / Fe₃O₄ / nanoparticle / heavy metal ion

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儿茶素功能化Fe₃O₄磁性纳米粒子的合成及其对重金属离子去除的研究[J]. 化工新型材料, 2021, 49(6): 271-275 DOI:10.19817/j.cnki.issn 1006-3536.2021.06.059

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