Preparation of molecularly imprinted ordered mesoporous silica for rapid and selective separation of trace bisphenol A from water samples

被引：31

作者：

Zhang, Zulei ^{[1
]}

Li, Lei ^{[1
]}

Wang, Hongmei ^{[1
]}

Guo, Liping ^{[1
]}

Zhai, Yunyun ^{[1
]}

Zhang, Jian ^{[1
]}

Yang, Yiwen ^{[1
]}

Wang, Hailong ^{[1
]}

Yin, Zhengzhi ^{[1
]}

Lu, Yixia ^{[1
]}

机构：

[1] Jiaxing Univ, Sch Biol & Chem Engn, Jiaxing 314001, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 448卷

关键词：

Ordered mesoporous silica; Surface molecularly imprinted; Selective separation; Bisphenol A; Water samples; SOLID-PHASE EXTRACTION; CDTE QUANTUM DOTS; MINIEMULSION POLYMERIZATION; LIQUID-CHROMATOGRAPHY; MASS-SPECTROMETRY; AQUEOUS-SOLUTIONS; SALICYLIC-ACID; POLYMERS; RECOGNITION; COMPOSITE;

D O I：

10.1016/j.apsusc.2018.04.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel molecularly imprinted ordered mesoporous silica SBA-15 (MI-SBA-15) was prepared using a semi-covalent approach to achieve high selectivity toward bisphenol A (BPA) from water samples. The structure and morphology of synthesized MI-SBA-15 were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetry, X-ray diffraction, and N-2 absorption analysis. Results show that MI-SBA-15 possessed highly ordered mesoporous structure with large surface area. Batch experiments were conducted to investigate the rebinding capability of MI-SBA-15 to BPA, showing rapid kinetics, high rebinding capacity, and excellent selectivity. The experimental data fitted well to the pseudo-second-order model and Langmuir-Freundlich adsorption isotherm, indicating chemical adsorption as the rate-limiting step. In addition, selectivity assay showed all the relative selectivity coefficients toward BPA over its structure analogs, which were higher than 132, further indicating the significant enhancement of the rebinding selectivity of MI-SBA-15. Furthermore, water samples were analyzed with MI-SBA-15 successfully, showing high recovery in the range of 87.0%-110.2%. In conclusion, MI-SBA-15 possessed high affinity and selectivity and compelling adsorption capacity for the extraction of BPA from water samples. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：380 / 388

页数：9

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