An effective method for the synthesis of yolk-shell magnetic mesoporous carbon-surface molecularly imprinted microspheres
Yang, R; Liu, YX; Yan, XY; Liu, SM; Zheng, HS
HERO ID
3540864
Reference Type
Journal Article
Year
2016
Language
English
| HERO ID | 3540864 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | An effective method for the synthesis of yolk-shell magnetic mesoporous carbon-surface molecularly imprinted microspheres |
| Authors | Yang, R; Liu, YX; Yan, XY; Liu, SM; Zheng, HS |
| Journal | Journal of Materials Chemistry A |
| Volume | 4 |
| Issue | 25 |
| Page Numbers | 9807-9815 |
| Abstract | This study aims to immobilise molecularly imprinted polymers (MIPs) on the surface of yolk-shell magnetic mesoporous carbon (Fe3O4@void@C) spheres for phthalate ester (PAE) recognition through an effective route. To link MIPs to Fe3O4@void@C spheres, carboxyl-modified yolk-shell magnetic mesoporous carbon (Fe3O4@void@C-COOH) was synthesised by first oxidising Fe3O4@void@C with H2O2, and MIPs were subsequently grafted on the surface of Fe3O4@void@C-COOH by a surface polymerisation method with diisononyl phthalate (DINP), methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) as template molecule, functional monomer and cross-linker, respectively. The structure and morphology of the synthesised materials were characterised by XRD, TEM, SEM, FT-IR, N-2 sorption and magnetic susceptibility measurements. The synthesis conditions for the formation of Fe3O4@void@C-COOH were systematically investigated. It was observed that the chemical modification of Fe3O4@void@C is highly influenced by the type of oxidant, the concentration of H2O2, oxidation temperature and time. The adsorption isotherm and kinetics of Fe3O4@void@C-MIPs showed that Fe3O4@void@C-MIPs possessed good recognition, fast adsorption rates (approximately 20 min to reach equilibrium) and high adsorption capacities (569.2 mg g(-1)) toward PAEs, which were ascribed to their uniformity and monodispersity. In addition, Fe3O4@void@C-MIPs exhibited excellent reusability for the adsorption of PAEs over six adsorption-desorption cycles. |
| Doi | 10.1039/c6ta00889e |
| Wosid | WOS:000378716900013 |
| Url | https://search.proquest.com/docview/2271811897?accountid=171501 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Peer Review | Yes |