The review also discusses different synthesis methods for spinel ferrites, including sol-gel, coprecipitation, hydrothermal, microemulsion, template, sonochemical, electrochemical, flame spray pyrolysis, and electrospinning. Each method has an impact on the properties and performance of spinel ferrites in dye degradation, with specific advantages in terms of cost, scalability, and control over material characteristics. Sol-gel and coprecipitation methods are known for producing uniform and high-purity spinel ferrites, while hydrothermal synthesis and solid-state reactions offer simplicity and potential for large-scale production. Microemulsion and template methods provide precise control over particle size and morphology, sonochemical and electrochemical methods enable rapid synthesis, flame spray pyrolysis allows for large-scale production, and electrospinning creates fibrous structures with a high surface area. Additionally, the review discusses the classification of spinel ferrites based on the number and type of metal ions involved, such as mono, bi, tri-metallic, or those incorporating noble metals. Mono-metallic spinel ferrites contain a single type of metal ion, while bimetallic and tri-metallic variants include two or three different metal ions, respectively, enhancing their catalytic and adsorption properties. The inclusion of noble metals can further improve the efficiency and stability of spinel ferrites in dye degradation processes.