Photocatalytic degradation of azo and rhodamine dyes using copper (ii) oxide nanoparticles
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EARET
Abstract
Fresh water pollution by dyes from various
industries is raising a lot of concern lately. Despite their
well-known toxicity to humans, azo dyes make up over half of the
used dye population. Rhodamines are also a well-used class of dyes
in industry. This study employed a cost effective, energy efficient,
environmentally benign method to degrade Methyl Orange
(MeO), Methylene Blue (MB) and Rhodamine B (RhB) dyes. The
photocatalyst used was copper (II) oxide (CuO) nano-sized
particles synthesised from CuSO4
.5H2O, Cu(NO3
)2
.3H2O and
NaOH via a simple solution route with neither a catalyst, template
nor a surfactant. The nanoparticles were characterised and used
for the photocatalytic degradation of the above dyes in the
presence of H2O2
. The CuO nanoparticles synthesised from both
copper precursors were found to degrade all dyes effectively over
the same degradation time interval, recording an overall minimum
degradation efficiency of 85 % and maximum of 99 %
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Mbu, E.E. et al. Photocatalytic degradation of azo and rhodamine dyes using copper (ii) oxide nanoparticles. 10th International Conference on Advances in Science, Engineering, Technology & Healthcare (ASETH-18), 19-20 Nov 2018, Cape Town, South Africa: 20-23. [https://doi.org/10.17758/EARES4.EAP1118210]