Photocatalytic degradation of a basic dye in water by nanostructured HPEI/TiO2 containing membranes

Authors

  • Penny Mathumba Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa
  • Khona Maziya Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, PO Box 17011, Johannesburg, 2028, South Africa
  • Alex T Kuvarega Nanotechnology and Water Sustainability Research Unit (NanoWS), College of Science, Engineering and Technology (CSET), University of South Africa (UNISA), Florida Science Campus, South Africa
  • Langelihle N Dlamini Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa
  • Soraya P Malinga Department of Chemical Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa

DOI:

https://doi.org/10.17159/wsa/2020.v46.i3.8660

Keywords:

hyperbranched polymers, methyl orange, phase inversion, polyethersulfone membranes, titanium dioxide nanoparticle

Abstract

A photocatalytically active membrane was synthesized through the embedding of HPEI/TiO2 nanocomposite in PES membrane for the removal of methyl orange (MO) dye from water. Membranes were characterized using scanning electron microscopy coupled with energy dispersive X-ray, atomic force microscopy, water contact angle measurements and water flux analysis.  PES/HPEI/TiO2 membranes showed improved hydrophilicity and were effective in the photodegradation of MO. The reaction rate for MO degradation was 11.6 x 10−3∙min−1, and the degradation was accompanied by the generation of sulphate ions as degradation by-products.

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Published

2020-07-28

Issue

Vol. 46 No. 3 July (2020): Water SA

Section

Research paper

License

Copyright (c) 2020 Penny Mathumba, Khona Maziya, Alex T Kuvarega, Langelihle N Dlamini, Soraya P Malinga

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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The content of this journal is licensed under a Creative Commons Attribution Licence.  Users are permitted to read, download, copy, distribute, print, search or link to the full texts of the articles in this journal under the terms of this Licence, without asking prior permission from the publisher or the author, provided the source is attributed. Copyright is retained by the authors.

How to Cite

Penny Mathumba (2020) “Photocatalytic degradation of a basic dye in water by nanostructured HPEI/TiO2 containing membranes”, Water SA, 46(3 July). doi:10.17159/wsa/2020.v46.i3.8660.