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https://hdl.handle.net/2440/113639
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Type: | Journal article |
Title: | Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis |
Author: | Duan, X. Indrawirawan, S. Sun, H. Wang, S. |
Citation: | Catalysis Today, 2015; 249:184-191 |
Publisher: | Elsevier BV |
Issue Date: | 2015 |
ISSN: | 0920-5861 1873-4308 |
Statement of Responsibility: | Xiaoguang Duan, Stacey Indrawirawan, Hongqi Sun, Shaobin Wang |
Abstract: | Abstract 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. |
Keywords: | Graphene; sulfate radicals; phenol; EPR; nitrogen doping |
Description: | Available online 31 October 2014 |
Rights: | © 2014 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.cattod.2014.10.005 |
Grant ID: | http://purl.org/au-research/grants/arc/DP130101319 |
Published version: | http://dx.doi.org/10.1016/j.cattod.2014.10.005 |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
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