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Photocatalytic degradation of methylene blue dye on reticulated vitreous carbon decorated with electrophoretically deposited TiO2 nanotubes

Photocatalytic degradation of methylene blue dye on reticulated vitreous carbon decorated with electrophoretically deposited TiO2 nanotubes
Photocatalytic degradation of methylene blue dye on reticulated vitreous carbon decorated with electrophoretically deposited TiO2 nanotubes
Titanate nanotubes (TiNT) were deposited over the surface of 100 pores per inch (ppi) reticulated vitreous carbon (RVC) by anodic electrophoresis at a cell voltage of 15 V, in an undivided cell, from an ethanol/water suspension containing TiNT coated with tetrabutylammonium hydroxide (TBAOH) surfactant. Scanning electron microscopy showed the open cell porous structure of TiNT/RVC coated by an uniform ca. 30 µm thick layer of TiNT. Calcination at 450°C for 2 h in air improved the photocatalytic properties. The material was used as photocatalyst for the decolourisation of methylene blue (MB) dye. The 98% volumetric porosity of the RVC substrate provided good reactant access and large surface area for deposition of TiNT. The calcined TiNT/RVC substrate achieved a 91% dye degradation after 20 min, which was higher than uncoated, acid treated RVC and non-calcined TiNT/RVC substrate. The MB decolourisation improved at an increased thickness of 3D TiNT/RVC catalyst although the improvement was limited to 4 mm on 100 ppi RVC due to limited UV penetration.
catalytic processes, nanotubes, composites, glassy carbon, ion assisted deposition
0925-9635
Zaidi, Syed Zohaib Javaid
52ccc64d-89e9-4d44-afb0-29a131204907
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Martins, Alysson Stefan
f7e39808-0036-4ede-b9b0-a49ba2e08f94
Yuliarto, Brian
3817e4d8-9d7a-49a5-8a47-2a7dd7a0a9f3
Zaidi, Syed Zohaib Javaid
52ccc64d-89e9-4d44-afb0-29a131204907
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Martins, Alysson Stefan
f7e39808-0036-4ede-b9b0-a49ba2e08f94
Yuliarto, Brian
3817e4d8-9d7a-49a5-8a47-2a7dd7a0a9f3

Zaidi, Syed Zohaib Javaid, Harito, Christian, Bavykin, Dmitry, Walsh, Frank, Ponce De Leon Albarran, Carlos, Martins, Alysson Stefan and Yuliarto, Brian (2020) Photocatalytic degradation of methylene blue dye on reticulated vitreous carbon decorated with electrophoretically deposited TiO2 nanotubes. Diamond and Related Materials.

Record type: Article

Abstract

Titanate nanotubes (TiNT) were deposited over the surface of 100 pores per inch (ppi) reticulated vitreous carbon (RVC) by anodic electrophoresis at a cell voltage of 15 V, in an undivided cell, from an ethanol/water suspension containing TiNT coated with tetrabutylammonium hydroxide (TBAOH) surfactant. Scanning electron microscopy showed the open cell porous structure of TiNT/RVC coated by an uniform ca. 30 µm thick layer of TiNT. Calcination at 450°C for 2 h in air improved the photocatalytic properties. The material was used as photocatalyst for the decolourisation of methylene blue (MB) dye. The 98% volumetric porosity of the RVC substrate provided good reactant access and large surface area for deposition of TiNT. The calcined TiNT/RVC substrate achieved a 91% dye degradation after 20 min, which was higher than uncoated, acid treated RVC and non-calcined TiNT/RVC substrate. The MB decolourisation improved at an increased thickness of 3D TiNT/RVC catalyst although the improvement was limited to 4 mm on 100 ppi RVC due to limited UV penetration.

Text
Photocatalytic Degradation of Methylene Blue Dye on RVC
Restricted to Repository staff only until 18 June 2022.
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More information

Accepted/In Press date: 18 June 2020
Published date: 7 July 2020
Keywords: catalytic processes, nanotubes, composites, glassy carbon, ion assisted deposition

Identifiers

Local EPrints ID: 442659
URI: http://eprints.soton.ac.uk/id/eprint/442659
ISSN: 0925-9635
PURE UUID: 7e2c89ac-a39a-4df7-bdb0-000009fb967f
ORCID for Carlos Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 22 Jul 2020 16:31
Last modified: 07 Oct 2020 01:51

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Contributors

Author: Syed Zohaib Javaid Zaidi
Author: Christian Harito
Author: Dmitry Bavykin
Author: Frank Walsh
Author: Alysson Stefan Martins
Author: Brian Yuliarto

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