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Type: Journal article
Title: Nitrogen-doped bamboo-like carbon nanotubes with Ni encapsulation for persulfate activation to remove emerging contaminants with excellent catalytic stability
Author: Kang, J.
Duan, X.
Wang, C.
Sun, H.
Tan, X.
Tade, M.
Wang, S.
Citation: Chemical Engineering Journal, 2018; 332:398-408
Publisher: Elsevier
Issue Date: 2018
ISSN: 1385-8947
Statement of
Jian Kang, Xiaoguang Duan, Chen Wang, Hongqi Sun, Xiaoyao Tan, Moses O. Tade, Shaobin Wang
Abstract: Nitrogen-doped bamboo-like carbon nanotubes encapsulated with nickel nanoparticles (Ni@NCNTs) were feasibly fabricated by a one-pot pyrolysis route. The characterization techniques revealed the surface morphology, structure and chemical composition of the as-prepared catalysts synthesized in different conditions. Ni@NCNTs were employed as both adsorbents and catalysts for activating persulfate to remove an emerging pollutant, antibiotic sulfachloropyridazine. The nitrogen modification enhanced both adsorption capacity and catalytic ability of Ni@NCNTs and proved to be a promising alternative to metal oxides and other carbon catalysts. Moreover, Ni@NCNTs showed an excellent stability because of nitrogen heteroatom doping and Ni nanoparticle encapsulation. Electron paramagnetic resonance (EPR) and classical radical quenching tests discovered a simultaneous radical/non-radical mechanism in Ni@NCNTs/persulfate system. The results indicated that the novel nano-architectured catalyst materials can show emerging functionalities for environmental remediation processes.
Keywords: Nitrogen doping; carbon nanotubes; antibiotics; persulfate; sulfate radicals
Rights: © 2017 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.cej.2017.09.102
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