| Fabrication of Poly（y-glutamic acid）-coated Fe3O4 Magnetic Nanoparticles and Their Application in Heavy Metal Removal |
| |
| 引用本文： | 常菁,仲兆祥,徐虹,姚忠,陈日志. Fabrication of Poly（y-glutamic acid）-coated Fe3O4 Magnetic Nanoparticles and Their Application in Heavy Metal Removal[J]. 中国化学工程学报, 2013, 21(11): 1244-1250. DOI: 10.1016/S1004-9541(13)60629-1 |
| |
| 作者姓名： | 常菁 仲兆祥 徐虹 姚忠 陈日志 |
| |
| 作者单位： | 1.College of Food Science and Light Industry, Nanjing University of Technology, Nanjing 210009, China;2.State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, Nanjing University of Technology, Nanjing 210009, China |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China （21276124）, the Research Project of Natural Science for Universities Affiliated to Jiangsu Province （10KJB530002）, Key Projects in the National Science ＆ Technology Pillar Pro-gram （2011BAE07B09-3）, the Jiangsu Provincial Science and Technology Support Program （BE2011831）, and the State High Technology Research and Development Prograr of China （2011AA02A201）. |
| |
| 摘 要： | In this study, poly（y-glutamic acid）-coated Fe3O4 magnetic nanoparticles （y-PGA/Fe304 MNPs） were successfully fabricated using the co-precipitation method. Fe3O4 MNPs were also prepared for comparison. The av erage size and specific surface area results reveal that 7-PGA/Fe304 MNPs （52.4 nm, 88.41 m2.g-1） have smaller particle size and larger specific surface area_ than Fe3O4 MNPs （62.0 nm, 76.83 mLg-1）. The y-PGA/Fe3O4 MNPs
|
| 关 键 词： | &gamma -PGA magnetic nanoparticles Fe3O4 heavy metal removal |
| 收稿时间： | 2013-03-20 |
Fabrication of Poly(γ-glutamic acid)-coated Fe3O4 Magnetic Nanoparticles and Their Application in Heavy Metal Removal |
| |
| CHANG Jing,ZHONG Zhaoxiang,XU Hong,YAO Zhong,CHEN Rizhi. Fabrication of Poly(γ-glutamic acid)-coated Fe3O4 Magnetic Nanoparticles and Their Application in Heavy Metal Removal[J]. Chinese Journal of Chemical Engineering, 2013, 21(11): 1244-1250. DOI: 10.1016/S1004-9541(13)60629-1 |
| |
| Authors: | CHANG Jing ZHONG Zhaoxiang XU Hong YAO Zhong CHEN Rizhi |
| |
| Affiliation: | 1.College of Food Science and Light Industry, Nanjing University of Technology, Nanjing 210009, China;2.State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, Nanjing University of Technology, Nanjing 210009, China |
| |
| Abstract: | In this study, poly(γ-glutamic acid)-coated Fe3O4 magnetic nanoparticles (γ-PGA/Fe3O4 MNPs) were successfully fabricated using the co-precipitation method. Fe3O4 MNPs were also prepared for comparison. The average size and specific surface area results reveal that γ-PGA/Fe3O4 MNPs (52.4 nm, 88.41 m2·g-1) have smaller particle size and larger specific surface area than Fe3O4 MNPs (62.0 nm, 76.83 m2·g-1). The γ-PGA/Fe3O4 MNPs can remove over 99% of Cr3+, Cu2+ and Pb2+, and over 77% of Ni2+ in deionized water, much higher than γ-PGA and Fe3O4 MNPs, attributed to the larger specific surface area of γ-PGA/Fe3O4 MNPs. With the solution pH higher than 6.0, γ-PGA/Fe3O4 MNPs demonstrate better removal activity. The adsorption isotherm of γ-PGA/Fe3O4 MNPs for Cr3+ fits the Freundlich model well, with the adsorption capacity of 24.60 mg·g-1. γ-PGA/Fe3O4 MNPs are strongly attracted by permanent magnet, so it is easy to separate them completely from water. With their high efficiency for heavy metal removal and easier separation, γ-PGA/Fe3O4 MNPs have great potential applications in water treatment. |
| |
| Keywords: | y-PGA magnetic nanoparticles Fe3fO4 heavy metal removal |
| 本文献已被 维普 ScienceDirect 等数据库收录！ |
| 点击此处可从《中国化学工程学报》浏览原始摘要信息 |
|
点击此处可从《中国化学工程学报》下载全文 |
|
