Environmentally hazardous, synthetic organic substances with a complex
structure are known as dyes. A major environmental issue is the removal of dyes from
the environment, and many techniques are often employed to break down colors. One
thought to be a good replacement for dye degradation is photocatalysis. Various
photocatalysts carry out the complete mineralization of colors without generating
hazardous by-products. When exposed to UV or visible light, metal nanoparticles'
promising catalytic ability allows them to break down dangerous synthetic dyes.
Compared to traditional methods, green production of metal nanoparticles is more
economical and environmentally benign. This book chapter focuses on using different
green synthesized metal nanoparticles to degrade synthetic colors. The
photodegradation mechanism presented in this chapter could clarify future uses for dye
degradation.
Keywords: Green synthesis, Metal nanoparticles, Photocatalytic degradation, Synthetic dyes.
