Facile preparation of surface-exchangeable core@shell iron oxide@gold nanoparticles for magnetic solid-phase extraction: Use of gold shell as the intermediate platform for versatile adsorbents with varying self-assembled monolayers
文献类型：期刊论文
| 作者 | Li, Yaping1,2; Qi, Li1; Shen, Ying1,2; Ma, Huimin1 |
| 刊名 | ANALYTICA CHIMICA ACTA
 |
| 出版日期 | 2014-02-06 |
| 卷号 | 811页码:36-42 |
| 关键词 | Magnetic Solid-phase Extraction Self-assembled Monolayers Thiol Exchange Process Normal-phase Solid-phase Extraction Reversed-phase Solid-phase Extraction |
| ISSN号 | 0003-2670 |
| DOI | 10.1016/j.aca.2013.12.020 |
| 英文摘要 | The core@shell Fe3O4@Au nanoparticles (NPs) functionalized with exchangeable self-assembled monolayers have been developed for mode switching magnetic solid-phase extraction (MSPE) using high performance liquid chromatography with ultraviolet detection. The adsorbents were synthesized by chemical coprecipitation to prepare magnetic cores followed by sonolysis to produce gold shells. Functionalization of Fe3O4@Au NPs surface was realized through self-assembly of commercially available low molecular weight thiol-containing ligands using gold shells as intermediate platform and the dynamic nature of Au-S chemistry allowed substituent of one thiol-containing ligand with another simply by thiol exchange process. The resultant adsorbents were characterized by transmission electronic microscopy, Fourier transform infrared spectroscopy, elemental analysis, contact angle measurement, and vibrating sample magnetometry. To evaluate the versatile performance of the developed MSPE adsorbents, they were applied for normal-phase SPE followed by reversed-phase SPE. A few kinds of diphenols and polycyclic aromatic hydrocarbons (PAHs) were employed as model analytes, respectively. The predominant parameters affecting extraction efficiency were investigated and optimized. Under the optimum experimental conditions, wide dynamic linear range (6.25-1600 mu g L-1 for diphenols and 1.56-100 mu g L-1 for PAHs) with good linearity (r(2) >= 0.989) and low detection limits (0.34-16.67 mu g L-1 for diphenols and 0.26-0.52 mu g L-1 for PAHs) were achieved. The advantage of the developed method is that the Fe3O4@Au NPs could be reutilized for preconcentrating diverse target analytes in different SPE modes sequentially simply through treatment with desired thiol-containing ligands. (C) 2013 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000329978700005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51907]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Qi, Li |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Analyt Chem Living Biosyst, Beijing 100080, Peoples R China 2.Univ Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yaping,Qi, Li,Shen, Ying,et al. Facile preparation of surface-exchangeable core@shell iron oxide@gold nanoparticles for magnetic solid-phase extraction: Use of gold shell as the intermediate platform for versatile adsorbents with varying self-assembled monolayers[J]. ANALYTICA CHIMICA ACTA,2014,811:36-42. |
| APA | Li, Yaping,Qi, Li,Shen, Ying,&Ma, Huimin.(2014).Facile preparation of surface-exchangeable core@shell iron oxide@gold nanoparticles for magnetic solid-phase extraction: Use of gold shell as the intermediate platform for versatile adsorbents with varying self-assembled monolayers.ANALYTICA CHIMICA ACTA,811,36-42. |
| MLA | Li, Yaping,et al."Facile preparation of surface-exchangeable core@shell iron oxide@gold nanoparticles for magnetic solid-phase extraction: Use of gold shell as the intermediate platform for versatile adsorbents with varying self-assembled monolayers".ANALYTICA CHIMICA ACTA 811(2014):36-42. |
入库方式： OAI收割
来源：化学研究所
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