Decolorization of methyl orange dye at IrO2-SnO2-Sb2O5 coated titanium anodes
Decolorization of methyl orange dye at IrO2-SnO2-Sb2O5 coated titanium anodes
A film of iridium and tin dioxides doped with antimony oxide (IrO2-SnO2-Sb2O5) was deposited onto Ti mesh and plate substrates by the Pechini method. The electrode surface morphology and composition were characterized by SEM-EDS. The ternary oxide coating was used for the anodic oxidation of methyl orange (MO) azo dye. Linear sweep voltammetry was used to identify the electrode potentials that favour MO degradation. Batch electrolyses were then carried out at a constant electrode potential of 1.5, 1.75 and 2.0V vs. SHE using either a three-electrode batch cell or a flow reactor. The dye solutions were totally decolorized via reactive oxygen species, such as OH, H2O2 and O3 formed in situ from water oxidation at the Ti/IrO2-SnO2-Sb2O5 surface.
123-129
Chaiyont, R.
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Badoe, C.
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Ponce de León Albarran, Carlos
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Nava, J.L.
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Recio, F.J.
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Sirés, I.
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Herrasti Gonzalez, P.
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Walsh, F.C.
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Chaiyont, R.
97cc42a9-8cac-4984-b2cb-023666485e01
Badoe, C.
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Ponce de León Albarran, Carlos
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Nava, J.L.
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Recio, F.J.
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Sirés, I.
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Herrasti Gonzalez, P.
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Walsh, F.C.
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Chaiyont, R., Badoe, C., Ponce de León Albarran, Carlos, Nava, J.L., Recio, F.J., Sirés, I., Herrasti Gonzalez, P. and Walsh, F.C.
(2012)
Decolorization of methyl orange dye at IrO2-SnO2-Sb2O5 coated titanium anodes.
Chemical Engineering & Technology, 36 (1), .
(doi:10.1002/ceat.201200231).
Abstract
A film of iridium and tin dioxides doped with antimony oxide (IrO2-SnO2-Sb2O5) was deposited onto Ti mesh and plate substrates by the Pechini method. The electrode surface morphology and composition were characterized by SEM-EDS. The ternary oxide coating was used for the anodic oxidation of methyl orange (MO) azo dye. Linear sweep voltammetry was used to identify the electrode potentials that favour MO degradation. Batch electrolyses were then carried out at a constant electrode potential of 1.5, 1.75 and 2.0V vs. SHE using either a three-electrode batch cell or a flow reactor. The dye solutions were totally decolorized via reactive oxygen species, such as OH, H2O2 and O3 formed in situ from water oxidation at the Ti/IrO2-SnO2-Sb2O5 surface.
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e-pub ahead of print date: 12 December 2012
Organisations:
Engineering Science Unit
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Local EPrints ID: 348259
URI: http://eprints.soton.ac.uk/id/eprint/348259
ISSN: 0930-7516
PURE UUID: b31a9935-f72d-41a2-b7c9-7b665f32d29b
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Date deposited: 11 Feb 2013 11:39
Last modified: 15 Mar 2024 03:22
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Contributors
Author:
R. Chaiyont
Author:
C. Badoe
Author:
J.L. Nava
Author:
F.J. Recio
Author:
I. Sirés
Author:
P. Herrasti Gonzalez
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