磁性分子印迹聚合物的制备及其对1, 2, 3, 4, 6-五没食子酰葡萄糖的吸附性能

doi:10.3969/j.issn.0253-2417.2023.04.008

林产化学与工业 ›› 2023, Vol. 43 ›› Issue (4): 53-59.doi: 10.3969/j.issn.0253-2417.2023.04.008

磁性分子印迹聚合物的制备及其对1, 2, 3, 4, 6-五没食子酰葡萄糖的吸附性能

汤丽华¹(), 管勤昊¹, 张亮亮², 徐曼¹, 闫林林¹^,*()

1. 中国林业科学研究院林产化学工业研究所; 江苏省生物质能源与材料重点实验室; 国家林业和草原局林产化学工程重点实验室; 林木生物质低碳高效利用国家工程研究中心; 江苏省林业资源高效加工利用协同创新中心, 江苏南京 210042
2. 华侨大学先进碳转化技术研究院, 福建厦门 361021

收稿日期:2022-07-31 出版日期:2023-08-28 发布日期:2023-08-26
通讯作者: 闫林林 E-mail:tanglihua@163.com;yanlinlin155@163.com
作者简介:闫林林，助理研究员，博士，研究领域为植物资源提取分离与开发利用；E-mail: yanlinlin155@163.com
汤丽华(1992—)，女，安徽池州人，研究实习员，硕士，主要从事植物多酚化学研究；E-mail: tanglihua@163.com
基金资助:
国家自然科学基金资助项目(31901236)

Preparation of Magnetic Molecularly Imprinted Polymers and Its Adsorption Properties for 1, 2, 3, 4, 6-Pentagalloylglucose

Lihua TANG¹(), Qinhao GUAN¹, Liangliang ZHANG², Man XU¹, Linlin YAN¹^,*()

1. Institute of Chemical Industry of Forest Products, CAF; Key Lab. of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
2. Advanced Carbon Conversion Technology Research Institute, Huaqiao University, Xiamen 361021, China

Received:2022-07-31 Online:2023-08-28 Published:2023-08-26
Contact: Linlin YAN E-mail:tanglihua@163.com;yanlinlin155@163.com

摘要/Abstract

摘要：

采用沉淀聚合法，以Fe₃O₄纳米颗粒为载体，1, 2, 3, 4, 6-五没食子酰葡萄糖(PGG)为模板分子，丙烯酰胺(AM)为功能单体，制备了PGG磁性分子印迹聚合物(MIPS)和磁性非印迹聚合物(NIPS，不加PGG)，表征了其形貌和结构，并考察了其对PGG的吸附性能。SEM、TEM、FT-IR和XRD分析结果表明：MIPS是以Fe₃O₄为核心的外层包有SiO₂，表面密布孔穴的球形纳米颗粒。磁学性质分析发现：MIPS具有良好的顺磁性，在外加磁场下能够实现分离。吸附性能研究结果表明：MIPS对PGG的吸附能力明显强于NIPS；MIPS对PGG的吸附过程比较符合Langmuir等温吸附模型，最大吸附量为67.02 mg/g；MIPS对PGG的吸附过程非常符合准二级动力学模型。在MIPS的重复利用性能实验中，其吸附第5次的吸附量为53.16 mg/g，仍能达到第1次使用时的吸附量的83.78%，表明MIPS的重复使用性能较好。

关键词: 分子印迹聚合物, 1, 2, 3, 4, 6-五没食子酰葡萄糖, 多酚, Fe₃O₄

Abstract:

The magnetic molecularly imprinted polymers(MIPS) and magnetic non-imprinted polymers(NIPS, without PGG) were prepared by precipitation polymerization using Fe₃O₄ magnetic nanoparticles as carriers, 1, 2, 3, 4, 6-penta-galloyl glucose(PGG) as template molecule and acrylamide (AM) as functional monomer. Their morphology and structure were characterized, and the adsorption performance was investigated. The results of SEM, TEM, FT-IR, and XRD showed that MIPS was spherical nanoparticle with Fe₃O₄ as the core and SiO₂ as the outer layer, with densely packed pores on the surface. The analysis of magnetic properties shows that MIPS has good paramagnetism and can be separated under applied magnetic field. The results show that the adsorption capacity of MIPS for PGG is obviously stronger than that of NIPS.The adsorption process of PGG by MIPS was fitted well with the Langmuir adsorption isotherm model, with a maximum adsorption capacity of 67.02 mg/g. The adsorption process of PGG by MIPS was very consistent with the second-order kinetic model. In the reuse performance experiment of MIPS, the adsorption capacity of the fifth cycle 53.16 mg/g, could still reach 83.78% of the first adsorption capacity. This indicated that the reuse performance of MIPS was better and could achieve specific adsorption of PGG.

Key words: molecular imprinted polymer, 1, 2, 3, 4, 6-pentagalloglucose, polyphenols, Fe₃O₄

中图分类号:

TQ35

汤丽华, 管勤昊, 张亮亮, 徐曼, 闫林林. 磁性分子印迹聚合物的制备及其对1, 2, 3, 4, 6-五没食子酰葡萄糖的吸附性能[J]. 林产化学与工业, 2023, 43(4): 53-59.

Lihua TANG, Qinhao GUAN, Liangliang ZHANG, Man XU, Linlin YAN. Preparation of Magnetic Molecularly Imprinted Polymers and Its Adsorption Properties for 1, 2, 3, 4, 6-Pentagalloylglucose[J]. Chemistry and Industry of Forest Products, 2023, 43(4): 53-59.

图/表 8

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磁性分子印迹聚合物的制备及其对1, 2, 3, 4, 6-五没食子酰葡萄糖的吸附性能

Preparation of Magnetic Molecularly Imprinted Polymers and Its Adsorption Properties for 1, 2, 3, 4, 6-Pentagalloylglucose

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