Photocatalytic degradation of azo and rhodamine dyes using copper (ii) oxide nanoparticles
Mbu, Etchu E.
Ntwampe, Seteno K.
MetadataShow full item record
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 %