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Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/ TiO2 nanosheets prepared by anodic electrodeposition

Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/ TiO2 nanosheets prepared by anodic electrodeposition
Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/ TiO2 nanosheets prepared by anodic electrodeposition
Reticulated vitreous carbon (RVC) substrates were coated with a composite of PbO2 and titanate nanosheets (TiNS) by electrophoresis. The structure and morphological characteristics of the coating were evaluated by field emission scanning electron microscopy (FESEM) and Raman spectroscopy. The TiNS/PbO2/RVC coating contained the anatase phase and showed a well-defined, microporous morphology with hydrophilic character along the length and thickness of the RVC struts. Electrochemical and photocatalytic activity of the coatings facilitated RB-5 dye degradation as a model organic pollutant in wastewater. The electrochemical decolourisation involves the generation of hydroxyl free radicals over the TiNS/PbO2/RVC anode composite surface whereas photocatalytic decolourisation was driven by the synergetic photocatalytic effect imparted by the photoinduced holes and free electron acceptors. The photocatalytic properties of the TiNS/PbO2 coating were achieved by calcination at 450 °C for 60 minutes in air which converted the titanate phase to anatase and modified its surface area. This enabled 98% decolourisation of the RB-5 dye solution (measured by visible absorption at 597 nm) in a time of 60 minutes.
anodic electrophoretic deposition, PbO2, , RVC, TiNS
1432-8488
1-12
Zaidi, Syed Zohaib, Javaid
52ccc64d-89e9-4d44-afb0-29a131204907
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Zaidi, Syed Zohaib, Javaid
52ccc64d-89e9-4d44-afb0-29a131204907
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c

Zaidi, Syed Zohaib, Javaid, Harito, Christian, Walsh, Frank and Ponce De Leon Albarran, Carlos (2018) Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/ TiO2 nanosheets prepared by anodic electrodeposition. Journal of Solid State Electrochemistry, 1-12. (doi:10.1007/s10008-018-3992-1).

Record type: Article

Abstract

Reticulated vitreous carbon (RVC) substrates were coated with a composite of PbO2 and titanate nanosheets (TiNS) by electrophoresis. The structure and morphological characteristics of the coating were evaluated by field emission scanning electron microscopy (FESEM) and Raman spectroscopy. The TiNS/PbO2/RVC coating contained the anatase phase and showed a well-defined, microporous morphology with hydrophilic character along the length and thickness of the RVC struts. Electrochemical and photocatalytic activity of the coatings facilitated RB-5 dye degradation as a model organic pollutant in wastewater. The electrochemical decolourisation involves the generation of hydroxyl free radicals over the TiNS/PbO2/RVC anode composite surface whereas photocatalytic decolourisation was driven by the synergetic photocatalytic effect imparted by the photoinduced holes and free electron acceptors. The photocatalytic properties of the TiNS/PbO2 coating were achieved by calcination at 450 °C for 60 minutes in air which converted the titanate phase to anatase and modified its surface area. This enabled 98% decolourisation of the RB-5 dye solution (measured by visible absorption at 597 nm) in a time of 60 minutes.

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Decolouration of reactive black-5 at an RVC substrate - Accepted Manuscript
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10.1007%2Fs10008-018-3992-1 - Version of Record
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More information

Accepted/In Press date: 10 May 2018
e-pub ahead of print date: 1 June 2018
Keywords: anodic electrophoretic deposition, PbO2, , RVC, TiNS

Identifiers

Local EPrints ID: 421229
URI: http://eprints.soton.ac.uk/id/eprint/421229
ISSN: 1432-8488
PURE UUID: 0f8f8396-7efa-42ed-ac7f-0b6f48d2fa75
ORCID for Carlos Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 25 May 2018 16:30
Last modified: 07 Oct 2020 05:35

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