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https://hdl.handle.net/2440/113643
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Type: | Journal article |
Title: | An insight into metal organic framework derived N-doped graphene for the oxidative degradation of persistent contaminants: formation mechanism and generation of singlet oxygen from peroxymonosulfate |
Author: | Liang, P. Zhang, C. Duan, X. Sun, H. Liu, S. Tade, M.O. Wang, S. |
Citation: | Environmental Science: Nano, 2017; 4(2):315-324 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2017 |
ISSN: | 2051-8153 2051-8161 |
Statement of Responsibility: | Ping Liang, Chi Zhang, Xiaoguang Duan, Hongqi Sun, Shaomin Liu, Moses O. Tade and Shaobin Wang |
Abstract: | The synthesis of carbonaceous materials from a metal organic framework (MIL-100), organic linker and N-precursor was comprehensively investigated, and the structures of the products were characterized. It was found that simple pyrolysis of mixed MIL-100 (Fe)/dicyandiamide (DCDA) could produce nitrogendoped graphene (N-graphene). The N-graphene showed excellent performances in peroxymonosulfate (PMS) activation, which were superior to those of counterparts of graphene, iron(II, III) oxide, manganeseIJIV) oxide and cobalt(II, III) oxide. With PMS activation, N-graphene exhibited efficient catalytic degradation of various organic pollutants such as phenol, 2,4,6-trichlorophenol (TCP), sulfachloropyridazine (SCP) and p-hydroxybenzoic acid (PHBA). Electron paramagnetic resonance (EPR) spectroscopy and radical quenching tests were employed to investigate the PMS activation and organic degradation processes. It was found that singlet oxygen (¹O₂) was mainly produced during the activation of PMS by N-graphene, and contributed to the catalytic oxidation instead of sulfate and/or hydroxyl radicals. These findings provide new insights into PMS activation by metal-free carbon catalysis. |
Description: | Print edition (ISSN 2051-8153) is obsolete. eISSN entered is active |
Rights: | This journal is © The Royal Society of Chemistry 2017 |
DOI: | 10.1039/c6en00633g |
Grant ID: | http://purl.org/au-research/grants/arc/DP150103026 |
Published version: | http://dx.doi.org/10.1039/c6en00633g |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
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