分析测试学报2025，Vol.44Issue(11)：2277-2284,8.DOI:10.12452/j.fxcsxb.241102505
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
Preparation and Adsorption Properties of Hippuric Acid-Molecularly Imprinted Polymers Based on Flower-Like Mesoporous Silica
摘要
Abstract
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 in-frared 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 opti-mized for the adsorption separation and determination of HA in fresh milk by combining with high per-formance 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.关键词
马尿酸/分子印迹聚合物/介孔二氧化硅/吸附分离/固相萃取Key words
hippuric acid/molecularly imprinted polymer/mesoporous silica nanoparticles/ad-sorption separation/solid-phase extraction分类
化学化工引用本文复制引用
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):2277-2284,8.基金项目
黑龙江省省属本科高校优秀青年教师基础研究支持计划(YQJH2023101) （YQJH2023101）
