The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used
<p>Abstract</p> <p>Background</p> <p>Ni<sub>2</sub>O<sub>3</sub>- γ-Fe<sub>2</sub>O<sub>3</sub> composite nanoparticles coated with a layer of 2FeCl<sub>3</sub>·5H<sub>2</sub>O can be prepared by co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2012-10-01
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| Series: | Chemistry Central Journal |
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| Online Access: | http://journal.chemistrycentral.com/content/6/1/127 |
| _version_ | 1818901037705068544 |
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| author | Lin Yueqiang Li Jian Lin Lihua Liu Xiaodong Chen Longlong Fu Jun |
| author_facet | Lin Yueqiang Li Jian Lin Lihua Liu Xiaodong Chen Longlong Fu Jun |
| author_sort | Lin Yueqiang |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Ni<sub>2</sub>O<sub>3</sub>- γ-Fe<sub>2</sub>O<sub>3</sub> composite nanoparticles coated with a layer of 2FeCl<sub>3</sub>·5H<sub>2</sub>O can be prepared by co-precipitation and processing in FeCl<sub>2</sub> solution. Using vibrating sample magnetometer (VSM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) diffraction techniques, the dependence of the preparation on the concentration of the FeCl<sub>2</sub> treatment solution is revealed.</p> <p>Results</p> <p>The magnetization of the as-prepared products varied non-monotonically as the FeCl<sub>2</sub> concentration increased from 0.020 M to 1.000 M. The Experimental results show that for the composite nanoparticles, the size of the γ-Fe<sub>2</sub>O<sub>3</sub> phase is constant at about 8 nm, the Ni<sub>2</sub>O<sub>3</sub> phase decreased and the 2FeCl<sub>3</sub>·5H<sub>2</sub>O phase increased with increasing concentration of FeCl<sub>2</sub> solution. The magnetization of the as-prepared products mainly results from the γ-Fe<sub>2</sub>O<sub>3</sub> core, and the competition between the reduction of the Ni<sub>2</sub>O<sub>3</sub> phase with the increase of the 2FeCl<sub>3</sub>·5H<sub>2</sub>O phase resulted in the apparent magnetization varying non-monotonically.</p> <p>Conclusions</p> <p>When the concentration of FeCl<sub>2</sub> treatment solution did not exceed 0.100 M, the products are spherical nanoparticles of size about 11 nm; their magnetization increased monotonically with increasing the concentration of FeCl<sub>2</sub> solution due to the decreasing proportion of Ni<sub>2</sub>O<sub>3</sub> phase.</p> |
| first_indexed | 2024-12-19T20:13:23Z |
| format | Article |
| id | doaj.art-ebffb75305824dfaa276f6b34114c700 |
| institution | Directory Open Access Journal |
| issn | 1752-153X |
| language | English |
| last_indexed | 2024-12-19T20:13:23Z |
| publishDate | 2012-10-01 |
| publisher | BMC |
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| series | Chemistry Central Journal |
| spelling | doaj.art-ebffb75305824dfaa276f6b34114c7002022-12-21T20:07:15ZengBMCChemistry Central Journal1752-153X2012-10-016112710.1186/1752-153X-6-127The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution usedLin YueqiangLi JianLin LihuaLiu XiaodongChen LonglongFu Jun<p>Abstract</p> <p>Background</p> <p>Ni<sub>2</sub>O<sub>3</sub>- γ-Fe<sub>2</sub>O<sub>3</sub> composite nanoparticles coated with a layer of 2FeCl<sub>3</sub>·5H<sub>2</sub>O can be prepared by co-precipitation and processing in FeCl<sub>2</sub> solution. Using vibrating sample magnetometer (VSM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) diffraction techniques, the dependence of the preparation on the concentration of the FeCl<sub>2</sub> treatment solution is revealed.</p> <p>Results</p> <p>The magnetization of the as-prepared products varied non-monotonically as the FeCl<sub>2</sub> concentration increased from 0.020 M to 1.000 M. The Experimental results show that for the composite nanoparticles, the size of the γ-Fe<sub>2</sub>O<sub>3</sub> phase is constant at about 8 nm, the Ni<sub>2</sub>O<sub>3</sub> phase decreased and the 2FeCl<sub>3</sub>·5H<sub>2</sub>O phase increased with increasing concentration of FeCl<sub>2</sub> solution. The magnetization of the as-prepared products mainly results from the γ-Fe<sub>2</sub>O<sub>3</sub> core, and the competition between the reduction of the Ni<sub>2</sub>O<sub>3</sub> phase with the increase of the 2FeCl<sub>3</sub>·5H<sub>2</sub>O phase resulted in the apparent magnetization varying non-monotonically.</p> <p>Conclusions</p> <p>When the concentration of FeCl<sub>2</sub> treatment solution did not exceed 0.100 M, the products are spherical nanoparticles of size about 11 nm; their magnetization increased monotonically with increasing the concentration of FeCl<sub>2</sub> solution due to the decreasing proportion of Ni<sub>2</sub>O<sub>3</sub> phase.</p>http://journal.chemistrycentral.com/content/6/1/127CompositeNanoparticlesFeCl<sub>2</sub> solutionConcentration |
| spellingShingle | Lin Yueqiang Li Jian Lin Lihua Liu Xiaodong Chen Longlong Fu Jun The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used Chemistry Central Journal Composite Nanoparticles FeCl<sub>2</sub> solution Concentration |
| title | The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used |
| title_full | The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used |
| title_fullStr | The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used |
| title_full_unstemmed | The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used |
| title_short | The dependence of Ni-Fe bioxide composites nanoparticles on the FeCl<sub>2</sub> solution used |
| title_sort | dependence of ni fe bioxide composites nanoparticles on the fecl sub 2 sub solution used |
| topic | Composite Nanoparticles FeCl<sub>2</sub> solution Concentration |
| url | http://journal.chemistrycentral.com/content/6/1/127 |
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