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Type: Journal article
Title: Biotemplated top-down assembly of hybrid Ni nanoparticles/N doping carbon on diatomite for enhanced catalytic reduction of 4-nitrophenol
Author: Jiang, D.
Liu, X.
Yuan, Y.
Feng, L.
Ji, J.
Wang, J.
Losic, D.
Yao, H.
Zhang, Y.
Citation: Chemical Engineering Journal, 2020; 383:123156-1-123156-9
Publisher: Elsevier
Issue Date: 2020
ISSN: 1385-8947
Statement of
De Bin Jiang, Xiaoying Liu, Yunsong Yuan, Li Feng, Junyi Ji, Jinshu Wang, Dusan Losic, Hong-Chang Yao, Yu Xin Zhang
Abstract: Biotemplated top-down assembly of hybrid Ni nanoparticles/N doping carbon on diatomite (DE/Ni/N-C) was synthesized and used to catalytically reduce 4-nitrophenol (4-NP) solution in presence of NaBH₄. The uniform nickel silicate nanosheets uniformly grown on the diatomite with maintained porous structure, enlarging the specific surface area. The thin polyaniline layer was then controllably coated on the nickel silicate nanosheets. The well-dispersed Ni nanoparticles with mean diameter of 20.3 nm were reduced from nickel silicate nanosheets by carbon from polyaniline pyrolysis process. Meanwhile, the N doping carbon layer was in-situ generated outside of the Ni nanoparticles. In the catalytic reduction of 4-NP reaction, the DE/Ni/N-C-800 exhibited excellent catalytic activity with activity parameter 0.053 mg⁻¹ s⁻¹ and stability after ten cycles. The presented results show an enhanced catalytic behavior of the DE/Ni/N-C-800 prepared by the low-cost material and simple controllable process, which indicates their potential for environmental remediation applications.
Keywords: Diatomite; Ni nanoparticles; N doping carbon; 4-nitrophenol; catalytic reduction reaction
Rights: © 2019 Elsevier B.V. All rights reserved.
RMID: 1000004174
DOI: 10.1016/j.cej.2019.123156
Appears in Collections:Chemical Engineering publications

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