Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent
Amino-functionalized Fe3O4/SiO2 core/shell nanoparticles were synthesized by reacting Fe3O4 nanoparticles with tetraethyl orthosilicate and (3-aminopropyl) triethoxysilane to introduce amino groups on the surface. The amino groups on the Fe3O4/SiO2 were reacted with the carboxylic groups of graphene...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Academic Press
2012
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/2944 |
| _version_ | 1848744092189589504 |
|---|---|
| author | Yao, Yunjin. Miao, S. Yu, S. Li, Ping Sun, Hongqi Wang, Shaobin |
| author_facet | Yao, Yunjin. Miao, S. Yu, S. Li, Ping Sun, Hongqi Wang, Shaobin |
| author_sort | Yao, Yunjin. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Amino-functionalized Fe3O4/SiO2 core/shell nanoparticles were synthesized by reacting Fe3O4 nanoparticles with tetraethyl orthosilicate and (3-aminopropyl) triethoxysilane to introduce amino groups on the surface. The amino groups on the Fe3O4/SiO2 were reacted with the carboxylic groups of graphene oxide (GO) with the aid of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinnimide to form Fe3O4/SiO2––GO nanoparticles. The structural, surface, and magnetic characteristics of the material were investigated by scanning and transmission electron microscopy, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Adsorption equilibrium and kinetics of methylene blue on the Fe3O4/SiO2––GO were studied in a batch system. The maximum adsorption capacities were found to be 97.0, 102.6, and 111.1 mg g−1 at 25, 45, and 60 °C, respectively. A second-order kinetic equation could best describe the sorption kinetics. Thermodynamic parameters indicated that the adsorption of methylene blue onto the material was thermodynamically feasible and could occur spontaneously. |
| first_indexed | 2025-11-14T05:55:58Z |
| format | Journal Article |
| id | curtin-20.500.11937-2944 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T05:55:58Z |
| publishDate | 2012 |
| publisher | Academic Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-29442017-09-13T14:32:14Z Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent Yao, Yunjin. Miao, S. Yu, S. Li, Ping Sun, Hongqi Wang, Shaobin Graphene Fe3O4/SiO2 core/shell nanoparticle Methylene blue Adsorption Amino-functionalized Fe3O4/SiO2 core/shell nanoparticles were synthesized by reacting Fe3O4 nanoparticles with tetraethyl orthosilicate and (3-aminopropyl) triethoxysilane to introduce amino groups on the surface. The amino groups on the Fe3O4/SiO2 were reacted with the carboxylic groups of graphene oxide (GO) with the aid of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinnimide to form Fe3O4/SiO2––GO nanoparticles. The structural, surface, and magnetic characteristics of the material were investigated by scanning and transmission electron microscopy, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Adsorption equilibrium and kinetics of methylene blue on the Fe3O4/SiO2––GO were studied in a batch system. The maximum adsorption capacities were found to be 97.0, 102.6, and 111.1 mg g−1 at 25, 45, and 60 °C, respectively. A second-order kinetic equation could best describe the sorption kinetics. Thermodynamic parameters indicated that the adsorption of methylene blue onto the material was thermodynamically feasible and could occur spontaneously. 2012 Journal Article http://hdl.handle.net/20.500.11937/2944 10.1016/j.jcis.2012.04.030 Academic Press restricted |
| spellingShingle | Graphene Fe3O4/SiO2 core/shell nanoparticle Methylene blue Adsorption Yao, Yunjin. Miao, S. Yu, S. Li, Ping Sun, Hongqi Wang, Shaobin Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title | Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title_full | Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title_fullStr | Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title_full_unstemmed | Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title_short | Fabrication of Fe3O4/SiO2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| title_sort | fabrication of fe3o4/sio2 core/shell nanoparticles attached to graphene oxide and its use as an adsorbent |
| topic | Graphene Fe3O4/SiO2 core/shell nanoparticle Methylene blue Adsorption |
| url | http://hdl.handle.net/20.500.11937/2944 |