Photodegradation of methylene blue using copper oxide prepared by hydrothermal method
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Date
2018-06
Authors
Engku Mohamad Hafzanurudin Engku Yunus
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Abstract
Methylene Blue (MB) has been used in many industries widely. The discharging
of MB without treatment may lead to many negative effects to aquatic life. Humans are
also no exception to be exposed to the negative effects of untreated MB because they
need water to live. The easiest way for MB treatment is photodegradation that used
sunlight that is natural source to oxidize the MB. Study continued with synthesizing
Copper Oxide (CuO) catalyst for MB photodegradation using hydrothermal process that
is adequate ways to obtain desirable crystals with mild condition, controllable
morphology, low aggregation and high crystallinity. Hydrothermal process was varied
with temperature, concentration of precursor and addition of NaOH. After that, the
sample will undergo characterization which scanning electron microscope (SEM), X-Ray
Diffraction (XRD), Ultraviolet–visible spectroscopy (UV-VIS) and Brunauer Emmett
Teller (BET). Result from experiment illuminate size of structure bigger when
concentration increase. Crystallinity also enhanced when temperature increase and
addition of NaOH to precursor had produce big impact to CuO morphologies, phase and
removal performance. The optimum parameter of hydrothermal process to have
magnificent dye removal percentage is 0.05 M of copper acetate and urea, 134'C and
addition of 1 M of NaOH.