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1.齐齐哈尔大学 化学与化学工程学院,黑龙江 齐齐哈尔 161006
2.农业农村部稻米及加工品质量与营养检验测试中心(桦川),黑龙江 佳木斯 154399
翟明翚,硕士,高级实验师,研究方向:色谱理论与应用研究,E-mail:xiaoyu70981@sina.com
收稿日期:2024-11-02,
修回日期:2024-12-10,
录用日期:2025-01-21,
网络出版日期:2025-09-26,
纸质出版日期:2025-11-15
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翟明翚,刘世伟,王颖,苏立强,韩爽,宋裕卓,何锡凤.基于花簇状介孔硅的马尿酸分子印迹聚合物的制备及其吸附性能研究[J].分析测试学报,2025,44(11):1-8.
ZHAI Ming-hui,LIU Shi-wei,WANG Ying,SU Li-qiang,HAN Shuang,SONG Yu-zhuo,HE Xi-feng.Preparation and Adsorption Properties of Hippuric Acid-Molecularly Imprinted Polymers Based on Flower-Like Mesoporous Silica[J].Journal of Instrumental Analysis,2025,44(11):1-8.
翟明翚,刘世伟,王颖,苏立强,韩爽,宋裕卓,何锡凤.基于花簇状介孔硅的马尿酸分子印迹聚合物的制备及其吸附性能研究[J].分析测试学报,2025,44(11):1-8. DOI: 10.12452/j.fxcsxb.241102505.
ZHAI Ming-hui,LIU Shi-wei,WANG Ying,SU Li-qiang,HAN Shuang,SONG Yu-zhuo,HE Xi-feng.Preparation and Adsorption Properties of Hippuric Acid-Molecularly Imprinted Polymers Based on Flower-Like Mesoporous Silica[J].Journal of Instrumental Analysis,2025,44(11):1-8. DOI: 10.12452/j.fxcsxb.241102505.
采用软模板法制备花簇状球形介孔二氧化硅(FSMSNs),以马尿酸(HA)为模板分子,3-氨丙基三乙氧基硅烷(ATPES)为功能单体,正硅酸四乙酯(TEOS)为交联剂,在其表面制备具有特异识别功能的HA分子印迹聚合物(FSMSNs@MIPs)。利用傅里叶变换红外光谱(FT-IR)、透射电子显微镜(TEM)、动态光散射(DLS)、X射线光电子能谱(XPS)等技术对FSMSNs@MIPs纳米粒子进行表征。对制备的FSMSNs@MIPs进行吸附性能研究,并结合Langmuir模型、准二级动力学模型等对其吸附机理进行探讨。结果表明:FSMSNs@MIPs对HA具有较高的选择性、较好的稳定性,最大吸附量为85.32 mg/g,吸附过程属于表面单分子层化学吸附。将FSMSNs@MIPs作为固相萃取填料制备分子印迹固相萃取填充柱,对固相萃取条件进行优化,结合高效液相色谱法(HPLC),对鲜牛奶中的马尿酸进行吸附分离测定,加标回收率为92.1%~99.3%,RSD< 3.6%,该印迹材料对马尿酸(HA)表现出良好的特异性识别能力。
In this paper,using tetraethyl orthosilicate(TEOS) as raw material,hexadecyl trimethyl ammonium chloride(CTAC) as porosity agent,flower-like spherical mesoporous silica nanoparticles was prepared by a soft template method,and using hippuric acid(HA) as a template molecule,3-aminopropyltriethoxysilane(ATPES) as a functional monomer and TEOS as a cross-linking agent,a molecular imprinted polymers(FSMSNs@MIPs) of HA with specific recognition were prepared on the surface of FSMSNs. The FSMSNs@MIPs nanoparticles were characterized using fourier transform infrared spectroscopy(FT-IR),transmission electron microscopy(TEM),dynamic light scattering(DLS) and X-ray photoelectron spectroscopy(XPS). The adsorption performance of the prepared FSMSNs@MIPs was investigated,and the adsorption mechanism was discussed with the adsorption models such as Langmuir model and quasi-second-order dynamics model. The results showed that FSMSNs@MIPs had high selectivity and good stability for HA,and the maximum adsorption capacity was 85.32 mg/g. The adsorption process belonged to surface single molecular layer chemisorption. FSMSNs@MIPs were used as solid-phase extraction(SPE) packing materials to prepare molecularly imprinted solid-phase extraction packed columns. The solid-phase extraction conditions were optimized for the adsorption separation and determination of HA in fresh milk by combining with high performance liquid chromatography(HPLC) with spiked recoveries ranging from 92.1%-99.3%,and RSD<3.6%. The imprinted material showed good specific recognition ability to HA.
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