Photocatalytic degradation of a basic dye in water by nanostructured HPEI/TiO2 containing membranes
Keywords:hyperbranched polymers, methyl orange, phase inversion, polyethersulfone membranes, titanium dioxide nanoparticle
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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Copyright (c) 2020 Penny Mathumba, Khona Maziya, Alex T Kuvarega, Langelihle N Dlamini, Soraya P Malinga
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