Review of the Advancements on Polymer/Metal Oxide Hybrid Nanocomposite‐Based Adsorption Assisted Photocatalytic Materials for Dye Removal

The use of dyes increases with increasing dye processing industries, especially with textile industries. The persistent nature, environmental toxicity, and carcinogenicity of dyes become the current issue of managing their impact on the ecosystem. Hence various methods of discharging have been reported. Most of the technologies were not effective in the removal process and generate secondary pollutants. However, adsorption supported photocatalytic process becomes a feasible, eco‐friendly, and appropriate technique. Based on these directions, developing such photocatalytic material for dye removal becomes the trend in current research. Thus, this review deals with dye removal through an adsorptive‐assisted photocatalytic process by various hybrid nanocomposite photocatalysts. Particular emphasis on photocatalytic dye degradation progresses by polymer/metal oxide hybrid nanocomposite photocatalysts (metal oxide nanoparticles with conductive, nonconductive, and both conductive & non‐conductive polymers composites) synthesis and dye degradation mechanisms. Besides, the kinetics, efficiency of degradation, and related factors were also assessed. Conversion of dyes to water, carbon dioxide, and other mineralized non‐toxic pollutants makes this technique the most preferred.