Abstract
A new CoW11Mn/PANI/TiO2 ternary composite was synthesized with K8[Co(H2O)MnW11O39] (CoW11Mn) and PANI/TiO2 by electrostatic self-assembly. These catalysts were characterized using infrared (IR) spectroscopy, X-ray diffraction, scanning electron microscopy, ultraviolet–visible spectroscopy, and N2 adsorption–desorption. CoW11Mn/PANI/TiO2 was used to photodegradate the example contaminant, gentian violet (GV). Under the optimum photodegradation conditions, 92.63% degradation was achieved, indicating that the introduction of polyoxometalate and polyaniline greatly enhanced the photocatalytic performance of the catalyst. Moreover, CoW11Mn/PANI/TiO2 exhibits stable performance with little loss in activity after three successive runs. Thus, CoW11Mn/PANI/TiO2 ternary composite could be a promising photocatalyst in photodegradation of organic pollutants.
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