Optimisation of graphene oxide-iron oxide nanocomposite in heterogeneous Fenton-like oxidation of Acid Orange 7

Zubir, Nor Aida, Yacou, Christelle, Zhang, Xiwang and Diniz da Costa, Joao C. (2014) Optimisation of graphene oxide-iron oxide nanocomposite in heterogeneous Fenton-like oxidation of Acid Orange 7. Journal of Environmental Chemical Engineering, 2 3: 1881-1888. doi:10.1016/j.jece.2014.08.001


Author Zubir, Nor Aida
Yacou, Christelle
Zhang, Xiwang
Diniz da Costa, Joao C.
Title Optimisation of graphene oxide-iron oxide nanocomposite in heterogeneous Fenton-like oxidation of Acid Orange 7
Journal name Journal of Environmental Chemical Engineering   Check publisher's open access policy
ISSN 2213-3437
Publication date 2014-09
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jece.2014.08.001
Open Access Status
Volume 2
Issue 3
Start page 1881
End page 1888
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Formatted abstract
Well-dispersed iron oxide nanoparticles supported onto graphene oxide sheets (i.e. GO–Fe3O4 nanocomposite) were synthesised and used as heterogeneous Fenton-like catalyst for the degradation of Acid Orange 7 dye (AO7). The reaction was systematically investigated under various experimental conditions such as nanocomposite dosage, pH, temperature, oxidant and dye concentrations. Best results showed a fast 80% degradation in ∼20 min, whilst ∼98% of AO7 was successfully removed after 180 min of reaction time. The degradation kinetics of AO7 was most influenced by pH and temperature, and can be described by a pseudo-first-order reaction following the Langmuir–Hinshelwood mechanism. Analysis of the spent nanocomposite suggested that the phase of iron oxide nanoparticles remained unchanged whilst minor pore volume losses occurred via carbon deposition and/or re-stacking of GO sheets.
Keyword Graphene oxide
Iron oxide
Nanocomposites
Heterogeneous Fenton-like reaction
Acid Orange 7
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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Created: Mon, 17 Nov 2014, 17:43:22 EST by System User on behalf of School of Chemical Engineering