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核心外SiO2微球的适用性,具有高的TiO2负载作为HPLC的静止相
Dian Wang1, Xiang Wan1, Jiafei Wang1
1Key Laboratory of Functional Molecule Design and Interface Process, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei, 230601, China.
Analytica chimica acta
|June 24, 2023
概括
这项研究开发了一种用于制备二氧化 (TiO2) 核心外球体的新方法,用于高性能液态染色学. 这些新的TiO2静止相为各种化合物提供了更好的加载和分离效率.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 二氧化 (TiO2) 具有出色的化学稳定性,刚性和离子交换特性,使其成为液态染色学静止阶段的 (SiO2) 的有希望的替代品.
- 使用sol-gel方法对SiO2支的传统TiO2涂层导致TiO2负载较低,这是由于四甲基酸盐的快速水解.
研究的目的:
- 开发一种方法,在SiO2核心外球体上实现高TiO2负载.
- 评估新型TiO2涂层球体在高性能液态染色学 (HPLC) 中作为静止相的性能.
主要方法:
- 使用高度 (0.25mol L-1) 的四甲基酸盐制备单分散的TiO2核心外球体.
- 使用n-octadecyltrichlorosilane的TiO2球的衍生.
- 将衍生球包装成不钢柱子,用于HPLC分析.
主要成果:
- 在核心外球体上达到高的TiO2负载 (57%),其特定表面积为66 m2 g-1和孔径为9.8 nm.
- 证明了具有高柱效率的多芳香碳化合物的基线分离 (118,075张m-1用于烯).
- 展示了酸性和基本性化合物的有效分离,具有良好的重复性 (RSD <5.1%).
结论:
- 对SiO2核心外球体的高TiO2负荷可以通过使用高度的四甲基酸来实现.
- 开发的TiO2涂层核心外球体代表了液体染色学应用的可行的替代静止相.
- 新的静止阶段对各种分析物具有出色的分离性能和可重复性.
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