A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol
In this study, magnetic carbon encapsulated nano iron hybrids (nano Fe0/Fe3C@CS) were synthesized via a novel one-pot hydrothermal method followed by self-reduction in N2 atmosphere. The structural, morphological, and physicochemical properties of the samples were thoroughly investigated by X-ray di...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier BV
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/8694 |
| _version_ | 1848745732654235648 |
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| author | Wang, Yuxian Sun, Hongqi Duan, X. Ang, H. Tade, Moses Wang, Shaobin |
| author_facet | Wang, Yuxian Sun, Hongqi Duan, X. Ang, H. Tade, Moses Wang, Shaobin |
| author_sort | Wang, Yuxian |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this study, magnetic carbon encapsulated nano iron hybrids (nano Fe0/Fe3C@CS) were synthesized via a novel one-pot hydrothermal method followed by self-reduction in N2 atmosphere. The structural, morphological, and physicochemical properties of the samples were thoroughly investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), N2 sorption isotherms and thermogravimetric analysis–differential scanning calorimetry (TGA–DSC). Catalytic performance of the as-synthesized nanoparticles was tested in activation of oxone® for phenol degradation in aqueous solutions. Superior catalytic performance was observed by complete removal of 20 ppm phenol within 10 min. The formation of Fe3C was found to contribute to a better stability and magnetic separation of Fe0/Fe3C@CS in its repeated uses. Both electron paramagnetic resonance (EPR) and classic quenching tests were carried out to investigate the mechanism of radical generation and evolution in phenol oxidation. Different from Co- and Mn-based catalysts in generation of sulfate radicals, Fe0/Fe3C@CS selectively induced hydroxyl radicals for phenol degradation. |
| first_indexed | 2025-11-14T06:22:02Z |
| format | Journal Article |
| id | curtin-20.500.11937-8694 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:22:02Z |
| publishDate | 2015 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-86942017-09-13T14:49:27Z A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol Wang, Yuxian Sun, Hongqi Duan, X. Ang, H. Tade, Moses Wang, Shaobin In this study, magnetic carbon encapsulated nano iron hybrids (nano Fe0/Fe3C@CS) were synthesized via a novel one-pot hydrothermal method followed by self-reduction in N2 atmosphere. The structural, morphological, and physicochemical properties of the samples were thoroughly investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), N2 sorption isotherms and thermogravimetric analysis–differential scanning calorimetry (TGA–DSC). Catalytic performance of the as-synthesized nanoparticles was tested in activation of oxone® for phenol degradation in aqueous solutions. Superior catalytic performance was observed by complete removal of 20 ppm phenol within 10 min. The formation of Fe3C was found to contribute to a better stability and magnetic separation of Fe0/Fe3C@CS in its repeated uses. Both electron paramagnetic resonance (EPR) and classic quenching tests were carried out to investigate the mechanism of radical generation and evolution in phenol oxidation. Different from Co- and Mn-based catalysts in generation of sulfate radicals, Fe0/Fe3C@CS selectively induced hydroxyl radicals for phenol degradation. 2015 Journal Article http://hdl.handle.net/20.500.11937/8694 10.1016/j.apcatb.2015.02.016 Elsevier BV restricted |
| spellingShingle | Wang, Yuxian Sun, Hongqi Duan, X. Ang, H. Tade, Moses Wang, Shaobin A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title | A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title_full | A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title_fullStr | A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title_full_unstemmed | A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title_short | A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| title_sort | new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol |
| url | http://hdl.handle.net/20.500.11937/8694 |