Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/121479
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Nickel in hierarchically structured nitrogen-doped graphene for robust and promoted degradation of antibiotics |
Author: | Kang, J. Zhang, H. Duan, X. Sun, H. Tan, X. wang, S. |
Citation: | Journal of Cleaner Production, 2019; 218:202-211 |
Publisher: | Elsevier |
Issue Date: | 2019 |
ISSN: | 0959-6526 1879-1786 |
Statement of Responsibility: | Jian Kang, Huayang Zhang, Xiaoguang Duan, Hongqi Sun, Xiaoyao Tan, Shaobin Wang |
Abstract: | Nickel nanoparticles encapsulated in nitrogen-doped porous graphene (Ni@NPG) were synthesized through a one-pot method as a novel material for catalytic activation of persulfate (PS). The Ni@NPG catalysts were evaluated for adsorptive and catalytic removals of antibiotic sulfachloropyridazine (SCP) as an emerging pollutant and were found to exhibit excellent adsorption and catalysis with 100% SCP removal from water in only 30 min. Meanwhile, great stability and reusability can be achieved with satisfactory organic degradation after 4 successive runs. In addition, metal leaching was prohibited from the metal@carbon catalysts due to the protection of carbon walls. The influences of humid acid and inorganic anions (HCO₃¯, Cl¯, Br¯ and H₂PO₄¯) on SCP degradation at various concentrations were further investigated and the present study shows that all these species promoted the SCP degradation at a low concentration whereas an inhibition effect occurred at higher concentrations due to radical quenching. Electron paramagnetic resonance (EPR) and quenching experiments reveal the PS activation mechanism involving generation of SO₄•¯, •OH and •O₂¯ without singlet oxygen. The synergistic effect of radical and nonradical pathways played crucial roles during the SCP oxidation process. |
Keywords: | N-doped graphene; metal encapsulation; persulfate; antibiotics; AOPs |
Rights: | © 2019 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.jclepro.2019.01.323 |
Grant ID: | http://purl.org/au-research/grants/arc/DP150103026 http://purl.org/au-research/grants/arc/LP160100035 http://purl.org/au-research/grants/arc/LE120100026 |
Published version: | http://dx.doi.org/10.1016/j.jclepro.2019.01.323 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.