Application of electrode materials and catalysts in electrocatalytic treatment of dye wastewater

The dye industry produces a large amount of hazardous wastewater every day worldwide, which brings potential threaten to the global environment. As an excellent method for removal of water chroma and chemical oxygen demand, electrocatalytic methods are currently widely used in the treatment of dye wastewater. The selection and preparation of electrode materials and electrocatalysts play an important role on the electrocatalytic treatment. The aim of this paper is to introduce the most excellent high-efficiency electrode materials and electrocatalysts in the field of dye wastewater treatment. Many electrode materials such as metal electrode materials, boron-doped diamond anode materials and three-dimensional electrode are introduced in detail. Besides, the mechanism of electrocatalytic oxidation is summarized. The composite treatment of active electrode and electrocatalyst are extensively examined. Finally, the progress of photo-assisted electrocatalytic methods of dye wastewater and the catalysts are described.

Automated summary

The dye industry generates a large amount of hazardous wastewater daily, posing a potential threat to the global environment. Electro-catalytic methods are widely used for the treatment of dye wastewater as an effective solution for removing water chroma and chemical oxygen demand. The selection and preparation of electrode materials and electrocatalysts are crucial in the electrocatalytic treatment process. This paper introduces the most excellent high-efficiency electrode materials and electrocatalysts for dye wastewater treatment, along with summarizing the mechanism of electrocatalytic oxidation.