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Abstract
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With the purpose of enhancement of photocatalytic performance in the visible region and
e -Mn-Al-
LDH/ZnO/CNT mixed metal oxide (ZnO/MMO) nanohybrid derived from ZnO/Co-Mn-Al
layered double hydroxide (LDH) precursor. The physicochemical characteristics of the
fabricated ZnO/MMO were surveyed by X-ray diffraction, scanning electron microscopy,
and FT-IR spectroscopy. The photocatalytic activity of
prepared ZnO/MMO/CNT nanohybrid was investigated by photocatalytic degradation of C.I.
Acid Red 14, as a model pollutant, under visible light irradiation. The photocatalytic activity of
ZnO/MMO/CNT was also compared with TiO2- P25, ZnO and Co-Mn-Al-LDH/ZnO/CNT
LDH. The experimental results shown that in comparison with other used photocatalysts,
ZnO/MMO/CNT nanohybrid was an efficient photocatalyst under visible light irradiation. The
effect of operational parameters including photocatalyst content, dye concentration, pH and
intensity of light on the photocatalytic removal efficiency of dye was investigated. The result
shown that efficiency decolonization was happened in the presence of ZnO/MMO/CNT
nanohybrid, pH= 4.5, catalyst dosage = 0.01gr and light intensity = 45W.
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