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https://hdl.handle.net/2440/113638
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Type: | Journal article |
Title: | Low temperature combustion synthesis of nitrogen-doped graphene for metal-free catalytic oxidation |
Author: | Indrawirawan, S. Sun, H. Duan, X. Wang, S. |
Citation: | Journal of Materials Chemistry A, 2015; 3(7):3432-3440 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2015 |
ISSN: | 2050-7488 2050-7496 |
Statement of Responsibility: | Stacey Indrawirawan, Hongqi Sun, Xiaoguang Duan and Shaobin Wang |
Abstract: | 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 mo⁻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. |
Rights: | This journal is © The Royal Society of Chemistry 2015 |
DOI: | 10.1039/c4ta05940a |
Grant ID: | http://purl.org/au-research/grants/arc/DP130101319 |
Published version: | http://dx.doi.org/10.1039/c4ta05940a |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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