Dye Decontamination of Industrial Effluents using Direct Sunlight Driven Photocatalytic Activity of Polyazomethine/TiO2 and Polyazo-methine/ZnO Nanocomposites

IJEP 43(7): 629-639 : Vol. 43 Issue. 7 (July 2023)

S.J. Pradeeba1*, K. Sivakumar2, V. Nirmala Devi1, B. Jeyagowri1 and L. Vidhya1

1. Hindusthan College of Engineering and Technology, Department of Chemistry, Coimbatore, Tamil Nadu – 641 032, India
2. Hindusthan College of Engineering and Technology, Department of Physics, Coimbatore, Tamil Nadu – 641 032, India


Textile industries pollute the water system, causing major health and environmental risks. As a result, technocrats and material science experts face difficult task of finding an alternative method to reduce the amount of pollution generated. The objective of this research work is to synthesize an azomethine polymer (PAZ), semiconductor nanoparticles, like TiO2, ZnO and composite materials, like TiO2 doped PAZ (PNT) and ZnO doped PAZ (PNZ) using an ultrasonication method. Methylene Blue (MB), Malachite Green (MG), Bismarck Brown (BB), Methyl Orange (MO) and Alizarin Red S (ARS) were photodegraded using the synthesized catalytic materials. The effect of contact time required for the maximum deterioration of dyes using PAZ, TiO2, ZnO, PNT and PNZ was found. PNT and PNZ polymeric nanocomposite showed excellent photostimulant performance in the presence of sunlight due to decrease in the bandgap with the addition of supporting material onto the semiconductor material. This can be a step or an economical social measure to get into a generation which effectively uses the available resources for essential human needs rather than creating a system which can destruct the environment sooner or later causing chaos to the future generation.


Metal oxide, Photocatalytic activity, Nanocomposites, Polyazomethine, Dyes


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