Graphene oxide with zinc partially substituted magnetite (GO-Fe1-: XZnxOy) for the UV-assisted heterogeneous Fenton-like reaction

Zubir, Nor Aida, Motuzas, Julius, Yacou, Christelle, Zhang, Xiwang and da Costa, Joao C. Diniz (2016) Graphene oxide with zinc partially substituted magnetite (GO-Fe1-: XZnxOy) for the UV-assisted heterogeneous Fenton-like reaction. RSC Advances, 6 50: 44749-44757. doi:10.1039/c6ra04068c


Author Zubir, Nor Aida
Motuzas, Julius
Yacou, Christelle
Zhang, Xiwang
da Costa, Joao C. Diniz
Title Graphene oxide with zinc partially substituted magnetite (GO-Fe1-: XZnxOy) for the UV-assisted heterogeneous Fenton-like reaction
Formatted title
Graphene oxide with zinc partially substituted magnetite (GO-Fe1-XZnxOy) for the UV-assisted heterogeneous Fenton-like reaction
Journal name RSC Advances   Check publisher's open access policy
ISSN 2046-2069
Publication date 2016
Year available 2016
Sub-type Article (original research)
DOI 10.1039/c6ra04068c
Open Access Status Not Open Access
Volume 6
Issue 50
Start page 44749
End page 44757
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2017
Language eng
Formatted abstract
A series of graphene oxide (GO) and zinc partially substituted magnetite GO–Fe1−xZnxOy (0 ≤ x ≤ 0.285) catalysts were synthesised through a precipitation-oxidation method. The rate constants for the degradation of acid orange seven (AO7) proceeded at a significant faster rate under UV-irradiation (up to 670%) than the conventional heterogeneous Fenton-like reaction. The resultant catalysts were mesoporous, so there was no mass transfer limitation for AO7 to access active sites in the catalysts. Further, maximum increases of rate constant up to 220% occurred as the zinc molar concentration increased from x = 0 to x = 0.159. GO enhanced to incorporation of zinc into the combined metal oxide, whilst zinc limited crystal growth, thus forming smaller crystallite sizes. These features proved to be essential for the improved catalytic activity of the resultant catalysts. The optimised zinc molar value at x = 0.159 delivered the best catalytic activity.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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