The effect of pH on the photocatalytic degradation of cationic and anionic dyes using polyazomethine/ZnO and polyazomethine/TiO2 nanocomposites

Abstract

Advanced oxidation process (AOP) is a recently developed by the researchers for the wastewater treatment over a decade which has more advantages when compared with other conventional methods. Photocatalysis is the most efficient and attractive techniques for the degradation of organic pollutant using semiconductor nanostructured material in presence of solar energy. The researchers decided on the rising deprivation rate of pollutants by incorporating inorganic materials into conducting polymers to understand its synergistic and complementary behaviour among the polymer and inorganic materials. Based on this, the present study is to synthesize polymeric nanocomposite material ZnO with polyazomethine (PNZ) and TiO2 with polyazomethine (PNT) through ultrasonication technique. The synthesized polymeric nanocomposites were used for the photodegradation of cationic and anionic dyes. These synthesized polymeric nanocomposites can act as a potential alternate in future due to its enhanced dye degradation ability and higher stability nature. By varying pH of the dye solution at different time interval the degradation efficiency of photocalatystswere analyzed and found that cationic dyes are removed more when compared to anionic dyes.

Fabrication of SrTiO3 anchored rGO/g-C3N4 photocatalyst for the removal of mixed dye from wastewater: dual photocatalytic mechanism

“…pH is a crucial factor in photocatalytic degradation of various pollutants in waste water. Because it significantly affects interfacial processes, both anodic and cathodic, by altering the charge generated on the catalyst surface 88 , 89 . So, it is essential to examine the dye degradation performance across different pH values.…”

Photodegradation, thermodynamic and kinetic study of cationic and anionic dyes from effluents using polyazomethine/ZnO and polyazomethine/TiO2 nanocomposites

“…Under sonication, ZnO or TiO 2 nanoparticles are liberated in acetone and simultaneously added to the polymeric solution. The precipitated ZnO incorporated polyazomethine (PNZ) or TiO 2 incorporated polyazomethine (PNT) composite material is filtered, washed repeatedly in acetone and dried out [24].FT-IR spectroscopy, UV-Vis spectroscopy, scanning electron microscopy, transmission electron microscopy and Energy Dispersive Analysis X-ray powder X-ray diffraction were used to verify the synthesised polyazomethines (PNT & PNZ) [25][26][27][28][29][30][31].…”

Degradation of Dibutyl Phthalate Plasticizer in Water by High-Performance Iro2-Ta2O5/Ti Electrocatalytic Electrode

“…For rapid organic contaminated degradation, one of the critical factors is to accelerate the removal rate of pollutants in the surface activity of catalyst electrode during electrocatalysis process. Accordingly, many materials such as TiO 2 , RuO 2 , IrO 2 , and boron-doped diamond electrodes (BDD) have been extensively studied [20,21]. In recent years, composite material electrodes have shown more enhanced stability and activity than sole material and have become inevitable substitutes, such as RuO 2 -SnO 2 , RuO 2 @TiO 2 , IrO 2 -Ta 2 O 5 , RuO 2 -IrO 2 -TiO 2 [22][23][24][25].…”