Next Article in Journal / Special Issue
Metal and Covalent Organic Frameworks for Membrane Applications
Previous Article in Journal
An Experimental Study of Membrane Contactor Modules for Recovering Cyanide through a Gas Membrane Process
Previous Article in Special Issue
Aquaporin-Containing Proteopolymersomes in Polyelectrolyte Multilayer Membranes
Open AccessArticle

Improved Surface Functional and Photocatalytic Properties of Hybrid ZnO-MoS2-Deposited Membrane for Photocatalysis-Assisted Dye Filtration

1
AMBER Centre, CRANN Institute, Trinity College Dublin, Dublin 2, Ireland
2
BiOrbic—Bioeconomy SFI Research Centre, University College Dublin, Belfield, Dublin 4, Ireland
3
School of Physics, Trinity College Dublin, Dublin 2, Ireland
4
School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
*
Author to whom correspondence should be addressed.
Membranes 2020, 10(5), 106; https://doi.org/10.3390/membranes10050106
Received: 12 April 2020 / Revised: 15 May 2020 / Accepted: 18 May 2020 / Published: 21 May 2020
(This article belongs to the Special Issue Membranes: 10th Anniversary)
The synergistic mechanism of photocatalytic-assisted dye degradation has been demonstrated using a hybrid ZnO-MoS2-deposited photocatalytic membrane (PCM). Few layers of MoS2 sheets were produced using the facile and efficient surfactant-assisted liquid-phase exfoliation method. In this process, hydrophilic moieties of an anionic surfactant were adsorbed on the surface of MoS2, which aided exfoliation and promoted a stable dispersion due to the higher negative zeta potential of the exfoliated MoS2 sheets. Further, the decoration of ZnO on the exfoliated MoS2 sheets offered a bandgap energy reduction to about 2.77 eV, thus achieving an 87.12% degradation of methylene blue (MB) dye within 15 min of near UV-A irradiation (365 nm), as compared with pristine ZnO achieving only 56.89%. The photocatalysis-enhanced membrane filtration studies on the ZnO-MoS2 PCM showed a complete removal of MB dye (~99.95%). The UV-assisted dye degradation on the ZnO-MoS2 PCM offered a reduced membrane resistance, with the permeate flux gradually improving with the increase in the UV-irradiation time. The regeneration of the active ZnO-MoS2 layer also proved to be quite efficient with no compromise in the dye removal efficiency. View Full-Text
Keywords: photocatalytic membrane; hybrid ZnO-MoS2 layer; surfactant-assisted exfoliation; surface modification; membrane filtration; dye degradation photocatalytic membrane; hybrid ZnO-MoS2 layer; surfactant-assisted exfoliation; surface modification; membrane filtration; dye degradation
Show Figures

Graphical abstract

MDPI and ACS Style

Rameshkumar, S.; Henderson, R.; Padamati, R.B. Improved Surface Functional and Photocatalytic Properties of Hybrid ZnO-MoS2-Deposited Membrane for Photocatalysis-Assisted Dye Filtration. Membranes 2020, 10, 106.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop