Abstract
Porous CoxNi1-xTiO3 nanorods were successfully synthesized through a solution-based method following an ethylene glycol route at room temperature. The effect of calcination temperature from 300 °C to 900 °C for NiTiO3 and CoTiO3 nanorods was studied using X-ray diffractometry and scanning electron microscopy in order to investigate their structural and morphological properties. The optimum calcination temperature to prepare pure ilmenite type structure rods with high crystallinity and hexagonal shape was 600 °C. Co0.5Ni0.5TiO3 exhibited the highest photocatalytic activity for the degradation of ethyl paraben, an endocrine disrupting compound, under simulated solar or visible light irradiation. Nearly complete (i.e. 92%) paraben degradation occurred after 5 h of solar irradiation and this decreased to 48% when only the visible part of the radiation was employed. The solar photocatalytic activity of CoTiO3 and NiTiO3 was found to be 42% and 67%, respectively.
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