Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation
Nitrogen-doped reduced graphene oxide (N-rGO) was prepared by a simple process of simultaneous reduction and nitrogen doping on graphene oxide (GO) at low temperatures using ammonium nitrate as a N precursor. Characterization techniques indicated that N-rGO materials with a high N loading (5–8 at%)...
| Main Authors: | , , , |
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| Format: | Journal Article |
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R S C Publications
2015
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| Online Access: | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/10973 |
| _version_ | 1848747680424001536 |
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| author | Indrawirawan, S. Sun, Hongqi Duan, X. Wang, Shaobin |
| author_facet | Indrawirawan, S. Sun, Hongqi Duan, X. Wang, Shaobin |
| author_sort | Indrawirawan, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Nitrogen-doped reduced graphene oxide (N-rGO) was prepared by a simple process of simultaneous reduction and nitrogen doping on graphene oxide (GO) at low temperatures using ammonium nitrate as a N precursor. Characterization techniques indicated that N-rGO materials with a high N loading (5–8 at%) can be easily produced and that the crystal/micro-structures and chemical compositions of N-rGO materials are dependent on the calcination conditions. The metal-free catalysis of N-rGO was investigated by catalytic activation of peroxymonosulfate (PMS) for phenol oxidative degradation in water. It was found that N-rGO samples are promising green catalysts for phenol degradation. Kinetic studies showed that phenol degradation follows first order reaction kinetics on N-rGO-350 with an activation energy of 31.6 kJ mol−1. The mechanism of PMS activation and phenol oxidation was elucidated by employing both electron paramagnetic resonance (EPR) studies and quenching tests with ethanol and tert-butanol. |
| first_indexed | 2025-11-14T06:53:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-10973 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:53:00Z |
| publishDate | 2015 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-109732022-10-06T06:32:51Z Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation Indrawirawan, S. Sun, Hongqi Duan, X. Wang, Shaobin Nitrogen-doped reduced graphene oxide (N-rGO) was prepared by a simple process of simultaneous reduction and nitrogen doping on graphene oxide (GO) at low temperatures using ammonium nitrate as a N precursor. Characterization techniques indicated that N-rGO materials with a high N loading (5–8 at%) can be easily produced and that the crystal/micro-structures and chemical compositions of N-rGO materials are dependent on the calcination conditions. The metal-free catalysis of N-rGO was investigated by catalytic activation of peroxymonosulfate (PMS) for phenol oxidative degradation in water. It was found that N-rGO samples are promising green catalysts for phenol degradation. Kinetic studies showed that phenol degradation follows first order reaction kinetics on N-rGO-350 with an activation energy of 31.6 kJ mol−1. The mechanism of PMS activation and phenol oxidation was elucidated by employing both electron paramagnetic resonance (EPR) studies and quenching tests with ethanol and tert-butanol. 2015 Journal Article http://hdl.handle.net/20.500.11937/10973 10.1039/c4ta05940a http://purl.org/au-research/grants/arc/DP130101319 R S C Publications restricted |
| spellingShingle | Indrawirawan, S. Sun, Hongqi Duan, X. Wang, Shaobin Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title_full | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title_fullStr | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title_full_unstemmed | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title_short | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| title_sort | low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
| url | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/10973 |