Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal
Polydopamine (PDA) displays many striking properties of naturally occurring melanin in optics, electricity, and biocompatibility. Another valuable feature of polydopamine lies in its chemical structure that incorporates many functional groups such as amine, catechol and imine. In this study, a nanoc...
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doaj-cf84c1ed4db6462e83a66370442d04932020-11-24T22:29:58ZengMDPI AGPolymers2073-43602018-05-0110657010.3390/polym10060570polym10060570Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) RemovalYanxia Li0Lu Huang1Wenxuan He2Yiting Chen3Benyong Lou4Department of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, ChinaDepartment of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, ChinaDepartment of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, ChinaDepartment of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, ChinaDepartment of Chemical Engineering and Materials, Ocean College, Minjiang University, Fuzhou 350108, ChinaPolydopamine (PDA) displays many striking properties of naturally occurring melanin in optics, electricity, and biocompatibility. Another valuable feature of polydopamine lies in its chemical structure that incorporates many functional groups such as amine, catechol and imine. In this study, a nanocomposite of magnetic Fe3O4@Au@polydopamine nanopaticles (Fe3O4@Au@ PDA MNPs) was synthesized. Carboxyl functionalized Fe3O4@Au nanoparticles (NPs) were successfully embedded in a layer of PDA through dopamine oxypolymerization in alkaline solution. Through the investigation of adsorption behavior to Cu(II), combined with high sensitive electrochemical detection, the as-prepared magnetic nanocomposites (MNPs) have been successfully applied in the separation and analysis of Cu(II). The experimental parameters of temperature, Cu(II) concentration and pH were optimized. Results showed that the as-prepared MNPs can reach saturation adsorption after adsorbing 2 h in neutral environment. Furthermore, the as-prepared MNPs can be easily regenerated by temperature control and exhibits a good selectivity compared to other metal ions. The prepared Fe3O4@Au@PDA MNPs are expected to act as a kind of adsorbent for Cu(II) deep removal from contaminated waters.http://www.mdpi.com/2073-4360/10/6/570magnetic nanocompositescopper(II)polydopamineFe3O4@Au nanoparticles |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yanxia Li Lu Huang Wenxuan He Yiting Chen Benyong Lou |
spellingShingle |
Yanxia Li Lu Huang Wenxuan He Yiting Chen Benyong Lou Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal Polymers magnetic nanocomposites copper(II) polydopamine Fe3O4@Au nanoparticles |
author_facet |
Yanxia Li Lu Huang Wenxuan He Yiting Chen Benyong Lou |
author_sort |
Yanxia Li |
title |
Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal |
title_short |
Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal |
title_full |
Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal |
title_fullStr |
Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal |
title_full_unstemmed |
Preparation of Functionalized Magnetic Fe3O4@Au@polydopamine Nanocomposites and Their Application for Copper(II) Removal |
title_sort |
preparation of functionalized magnetic fe3o4@au@polydopamine nanocomposites and their application for copper(ii) removal |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2018-05-01 |
description |
Polydopamine (PDA) displays many striking properties of naturally occurring melanin in optics, electricity, and biocompatibility. Another valuable feature of polydopamine lies in its chemical structure that incorporates many functional groups such as amine, catechol and imine. In this study, a nanocomposite of magnetic Fe3O4@Au@polydopamine nanopaticles (Fe3O4@Au@ PDA MNPs) was synthesized. Carboxyl functionalized Fe3O4@Au nanoparticles (NPs) were successfully embedded in a layer of PDA through dopamine oxypolymerization in alkaline solution. Through the investigation of adsorption behavior to Cu(II), combined with high sensitive electrochemical detection, the as-prepared magnetic nanocomposites (MNPs) have been successfully applied in the separation and analysis of Cu(II). The experimental parameters of temperature, Cu(II) concentration and pH were optimized. Results showed that the as-prepared MNPs can reach saturation adsorption after adsorbing 2 h in neutral environment. Furthermore, the as-prepared MNPs can be easily regenerated by temperature control and exhibits a good selectivity compared to other metal ions. The prepared Fe3O4@Au@PDA MNPs are expected to act as a kind of adsorbent for Cu(II) deep removal from contaminated waters. |
topic |
magnetic nanocomposites copper(II) polydopamine Fe3O4@Au nanoparticles |
url |
http://www.mdpi.com/2073-4360/10/6/570 |
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