Easy Synthesis of Surface-Tunable Carbon-Encapsulated Magnetic Nanoparticles: Adsorbents for Selective Isolation and Preconcentration of Organic Pollutants
文献类型：期刊论文
| 作者 | Niu, Hongyun ; Wang, Yixuan ; Zhang, Xiaole ; Meng, Zhaofu ; Cai, Yaqi |
| 刊名 | Science & Technology - Other Topics; Materials Science
 |
| 出版日期 | 2012 |
| 卷号 | 4期号:1页码:286-295 |
| 关键词 | surface-tunable carbon-encapsulated magnetic nanoparticles graphitized carbon oxygen-containing species solid-phase extraction adsorption |
| ISSN号 | 1944-8244 |
| 中文摘要 | We have prepared core/shell structured carbon-encapsulated magnetic nanoparticles (CMNPs) with a simple method by using inorganic iron salt and glucose solution as precursor substance. The synthetic procedure does not require the use of organic solvents. We have utilized X-ray photoelectron spectroscopy, infrared spectroscopy, X-ray diffraction, and Raman analysis to examine the surface properties of CMNPs prepared at different temperature. The specific surface areas, magnetization and contents of graphitized carbon on carbon shell of CMNPs increase with heat treatment temperature. The obtained CMNPs are used to adsorb or preconcentrate bisphenol A (BPA), 4-n-nonylphenol (4-NP), 4-tert-octylphenol (4-OP), diethyl phthalate (DEP), dipropyl phthalate (DPP), dibutyl phthalate (DBP) dicyclohexyl phthalate (DCHP), dioctyl phthalate (DOP), sulfonamide, tetracyclines, and quinolones antibiotics organic compounds from water samples. The adsorption of analytes is mainly based on pi-pi stacking interaction, hydrophobic interaction and hydrogen bonds between analytes and graphitic carbon. As a result, the adsorption or extraction behaviors of CMNPs to analytes are controlled by the content of oxygen-containing species and graphitized carbon on carbon shell of CMNPs. CMNPs prepared at 200 degrees C have ample oxygen-containing species (80%) on surface and favor the adsorption and extraction of quinolones antibiotics. CMNPs heated at 300-500 degrees C with the graphitization efficiency of carbon shell lower than 50% exhibit great preconcentration performance to BPA, 4-NP, 4-OP, DBP, DCHP, DOP, tetracyclines, and quinolones antibiotics. CMNPs prepared at 850 degrees C are highly graphitized (80%) and have strong adsorption affinity to all model analytes; however, they can quantitatively extract only highly polar sulfonamide antibiotics and moderately polar DEP, DPP because of hard desorption of other model analytes. We suggest that the appropriate adsorbent to certain organic contaminants can be obtained with this technique just by tuning the heat temperature without any post-treatment. |
| WOS记录号 | WOS:000299409500046 |
| 公开日期 | 2014-11-27 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8047]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Niu, Hongyun,Wang, Yixuan,Zhang, Xiaole,et al. Easy Synthesis of Surface-Tunable Carbon-Encapsulated Magnetic Nanoparticles: Adsorbents for Selective Isolation and Preconcentration of Organic Pollutants[J]. Science & Technology - Other Topics; Materials Science,2012,4(1):286-295. |
| APA | Niu, Hongyun,Wang, Yixuan,Zhang, Xiaole,Meng, Zhaofu,&Cai, Yaqi.(2012).Easy Synthesis of Surface-Tunable Carbon-Encapsulated Magnetic Nanoparticles: Adsorbents for Selective Isolation and Preconcentration of Organic Pollutants.Science & Technology - Other Topics; Materials Science,4(1),286-295. |
| MLA | Niu, Hongyun,et al."Easy Synthesis of Surface-Tunable Carbon-Encapsulated Magnetic Nanoparticles: Adsorbents for Selective Isolation and Preconcentration of Organic Pollutants".Science & Technology - Other Topics; Materials Science 4.1(2012):286-295. |
入库方式： OAI收割
来源：生态环境研究中心
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