Photocatalytic Degradation of Maxilon Dye Pollutants using Nano‐Architecture Functional Materials: A Review

In plain language

Water pollution caused by maxilon dye effluents presents a serious challenge for aquatic ecosystems. Functional nanoparticles offer an effective method for breaking down these colour contaminants under light irradiation. Photocatalytic degradation relies heavily on hydroxyl and superoxide radicals to provide the necessary oxidising capacity. Across evaluated nano-architectures, most nanoparticles achieve degradation efficiencies exceeding 80 percent, with the quickest treatments finishing in under an hour. These processes generally conform to pseudo-first-order kinetics during the dye adsorption and subsequent breakdown phases. Despite these high conversion rates, several hurdles remain for broader implementation. Critical gaps include understanding catalyst regenerability, completing lifecycle assessments of nanoparticle manufacture and use, assessing ecotoxicological risks of degradation pathways, and carrying out comprehensive cost analyses for industrial scale-up. Addressing these factors is vital for developing effective water treatment strategies.

Key takeaways

Hydroxyl and superoxide radicals drive the photocatalytic oxidation and breakdown of maxilon dye contaminants.
Most examined nanoparticles achieve dye degradation efficiencies higher than 80 percent, with some reactions completing within an hour.
The adsorption and degradation process is predominantly governed by pseudo-first-order reaction kinetics.
Key outstanding challenges include catalyst reusability, ecotoxicological assessments, and cost analyses for scaling up to industrial levels.

Why it matters

Industrial dye effluents severely pollute water systems, posing hazards to aquatic life and water supplies. Photocatalytic nanoparticles can rapidly break down these persistent maxilon dye pollutants using light. Understanding how these materials perform, alongside identifying economic and ecological knowledge gaps, helps direct future efforts towards cleaner water treatment technologies for communities and industries.

Commercialisation angle

This research informs the development of advanced photocatalytic wastewater treatment systems targeting toxic dye effluents from industrial activities. Potential users include water remediation facilities and textile or chemical manufacturers seeking to eliminate colour pollutants. The technology appears to be at an early to intermediate research stage, as significant gaps in material regenerability, lifecycle fabrication impacts, and economic scale-up assessments currently prevent immediate commercial deployment.

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Abstract

Abstract The most essential task in the twenty‐first century is to fight the alarming growing pollution in the aquatic body in which effluent of one of the most colouring dye categories called maxilon dye is a major contributor. This review thus specifically focuses on the use of nanoparticles (NPs) for photocatalytic degradation of maxilon dye contaminants in water bodies. The work empirically presented the performance evaluation of NPs in degrading maxilon dyes under light irradiation alongside the underlying operational photocatalytic degradation mechanism. The stability of NPs was also critically analyzed by looking at the regenerability and reusability of expended NPs. From the study, it was discovered that ⋅OH and O 2 ⋅ played a vital role in the genesis of the oxidizing capacity of NPs for the photocatalytic breakdown of maxilon dye. Moreover, it was found that the degradation performance of most NPs is greater than 80 % and the shortest degradation period is < 1 hour with pseudo‐first‐order (PFO) being the most common kinetic best‐fit to describe the adsorption process that occurred shortly before and during the degradation operation. At the end, knowledge gaps were identified in the area of regenerability, the lifecycle analyses of nano‐photocatalyst fabrication and utilization, cost analysis for industrial scale‐up, maxilon dye ecotoxicological study, and degradation pathways. The findings of this study can open up insightful innovation for readers and industries that are interested in pursuing zero water insecurity.

Research topics

Nanomaterials for catalytic reactions
Advanced Photocatalysis Techniques
TiO2 Photocatalysis and Solar Cells

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