Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis
Graphene-based materials have been demonstrated as excellent alternatives to traditional metal-based catalysts in environmental remediation. The metal-free nature of the nanocarbons can completely prevent toxic metal leaching and the associated secondary contamination. In this study, nitrogen doped...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier BV
2015
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| Online Access: | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/30067 |
| _version_ | 1848752981297594368 |
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| author | Duan, X. Indrawirawan, S. Sun, Hongqi Wang, Shaobin |
| author_facet | Duan, X. Indrawirawan, S. Sun, Hongqi Wang, Shaobin |
| author_sort | Duan, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Graphene-based materials have been demonstrated as excellent alternatives to traditional metal-based catalysts in environmental remediation. The metal-free nature of the nanocarbons can completely prevent toxic metal leaching and the associated secondary contamination. In this study, nitrogen doped graphene (NG) at a doping level of 6.54 at.% was prepared at mild conditions. Moreover, B- and P-doping or codoping with N in graphene were also achieved by a simple route. The modified graphene can efficiently activate peroxymonosulfate (PMS) to produce sulfate radicals to oxidize phenol solutions. Kinetic studies indicated that initial phenol concentration, PMS dosage, and temperature presented significant influences on the degradation rates. Electron paramagnetic resonance (EPR) analysis provided further insights into the evolution of active radicals during the activation of PMS and SO4•− was believed to be the primary radicals in the oxidation reactions. This study demonstrated a metal-free material for green catalysis in environmental remediation. |
| first_indexed | 2025-11-14T08:17:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-30067 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:17:15Z |
| publishDate | 2015 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-300672022-10-06T06:30:44Z Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis Duan, X. Indrawirawan, S. Sun, Hongqi Wang, Shaobin Graphene-based materials have been demonstrated as excellent alternatives to traditional metal-based catalysts in environmental remediation. The metal-free nature of the nanocarbons can completely prevent toxic metal leaching and the associated secondary contamination. In this study, nitrogen doped graphene (NG) at a doping level of 6.54 at.% was prepared at mild conditions. Moreover, B- and P-doping or codoping with N in graphene were also achieved by a simple route. The modified graphene can efficiently activate peroxymonosulfate (PMS) to produce sulfate radicals to oxidize phenol solutions. Kinetic studies indicated that initial phenol concentration, PMS dosage, and temperature presented significant influences on the degradation rates. Electron paramagnetic resonance (EPR) analysis provided further insights into the evolution of active radicals during the activation of PMS and SO4•− was believed to be the primary radicals in the oxidation reactions. This study demonstrated a metal-free material for green catalysis in environmental remediation. 2015 Journal Article http://hdl.handle.net/20.500.11937/30067 10.1016/j.cattod.2014.10.005 http://purl.org/au-research/grants/arc/DP130101319 Elsevier BV fulltext |
| spellingShingle | Duan, X. Indrawirawan, S. Sun, Hongqi Wang, Shaobin Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title_full | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title_fullStr | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title_full_unstemmed | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title_short | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| title_sort | effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
| url | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/30067 |