Electrocatalysis for Dye Degradation

This book chapter delves into the critical role of electrocatalysis in mitigating the challenges arising from the extensive use of dyes across various industries, which has resulted in environmental pollution and placed water resources and ecosystems at risk. The degradation of dyes is imperative to protect these invaluable resources, but it is often hindered due to the intricate nature of dye molecules. Electrocatalysis emerges as a promising solution, augmenting the efficiency of dye degradation processes. A description principle of electrocatalysis, including electrochemical fundamentals, key concepts, classifications of electrocatalysts, and selection criteria with diversified focus has been discussed. The mechanisms behind dye degradation are elucidated, encompassing direct electron transfer, electrogenerated active species, and indirect oxidation by reactive species. This chapter addresses challenges and limitations concerning catalyst stability, fouling, energy efficiency, and scale-up. Regulatory and environmental considerations are also examined with real-world case studies.