N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism
© 2017 American Chemical Society.N-doped graphene has been considered as a promising catalyst with surface metal-free active sites for environmental remediation. Several MIL-100 (Fe)-templated N-doped graphene samples were synthesized using dicyandiamide, melamine, and urea as the nitrogen precursor...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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American Chemical Society
2017
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| Online Access: | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/51425 |
| _version_ | 1848758695056375808 |
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| author | Liang, P. Zhang, C. Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Tade, Moses Wang, Shaobin |
| author_facet | Liang, P. Zhang, C. Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Tade, Moses Wang, Shaobin |
| author_sort | Liang, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 American Chemical Society.N-doped graphene has been considered as a promising catalyst with surface metal-free active sites for environmental remediation. Several MIL-100 (Fe)-templated N-doped graphene samples were synthesized using dicyandiamide, melamine, and urea as the nitrogen precursors. Excellent catalytic oxidation of p-hydroxylbenzoic acid (PHBA) was observed on the as-synthesized samples via peroxymonosulfate (PMS) activation. The mechanism was investigated by both electron paramagnetic resonance (EPR, 5,5-dimethyl-1-pyrroline N-oxide and 2,2,6,6-tetramethyl-4-piperidinol as the trapping agents) and quenching tests (ethanol and sodium azide as the radical scavengers). Benzoic acid and furfuryl alcohol were also employed as probing reagents for hydroxyl/sulfate radicals and singlet oxygen, respectively. The results confirmed that singlet oxygen was generated and dominated the PHBA degradation on N-doped graphene, rather than hydroxyl/sulfate radicals. With the novel N-doped graphene, this study illustrates the formation mechanism of nitrogen functionalities for reactive radicals via PMS activation for removal of organic contaminants in water. |
| first_indexed | 2025-11-14T09:48:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-51425 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:48:04Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-514252022-10-06T06:43:01Z N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism Liang, P. Zhang, C. Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Tade, Moses Wang, Shaobin © 2017 American Chemical Society.N-doped graphene has been considered as a promising catalyst with surface metal-free active sites for environmental remediation. Several MIL-100 (Fe)-templated N-doped graphene samples were synthesized using dicyandiamide, melamine, and urea as the nitrogen precursors. Excellent catalytic oxidation of p-hydroxylbenzoic acid (PHBA) was observed on the as-synthesized samples via peroxymonosulfate (PMS) activation. The mechanism was investigated by both electron paramagnetic resonance (EPR, 5,5-dimethyl-1-pyrroline N-oxide and 2,2,6,6-tetramethyl-4-piperidinol as the trapping agents) and quenching tests (ethanol and sodium azide as the radical scavengers). Benzoic acid and furfuryl alcohol were also employed as probing reagents for hydroxyl/sulfate radicals and singlet oxygen, respectively. The results confirmed that singlet oxygen was generated and dominated the PHBA degradation on N-doped graphene, rather than hydroxyl/sulfate radicals. With the novel N-doped graphene, this study illustrates the formation mechanism of nitrogen functionalities for reactive radicals via PMS activation for removal of organic contaminants in water. 2017 Journal Article http://hdl.handle.net/20.500.11937/51425 10.1021/acssuschemeng.6b03035 http://purl.org/au-research/grants/arc/DP130101319 http://purl.org/au-research/grants/arc/DP150103026 American Chemical Society restricted |
| spellingShingle | Liang, P. Zhang, C. Duan, Xiaoguang Sun, Hongqi Liu, Shaomin Tade, Moses Wang, Shaobin N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title | N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title_full | N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title_fullStr | N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title_full_unstemmed | N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title_short | N-Doped Graphene from Metal-Organic Frameworks for Catalytic Oxidation of p-Hydroxylbenzoic Acid: N-Functionality and Mechanism |
| title_sort | n-doped graphene from metal-organic frameworks for catalytic oxidation of p-hydroxylbenzoic acid: n-functionality and mechanism |
| url | http://purl.org/au-research/grants/arc/DP130101319 http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/51425 |