Vol. 7, Issue 4, Part A (2025)

Nanomaterials rely primarily on the size and the crystalline form (large surface area) in determining the effectiveness of nanoparticles, besides the type of synthesized method and their importance in various applications. Extracting the nanoparticles (Zno Nps) from plants and studying their structural and light. Zno Nps is extracted from plants using the green extraction method. A comparative study was done in the latest literature on green synthesis of zinc nanoparticles using environmentally friendly methods by plant extracts. The result was found that everything mentioned by all researchers agreed that the size of nanoparticle depends primarily on several factors (pH, concentration, temperature and time), as all of these factors play a major role in the size of the zinc oxide nanoparticle. Zno Nps can be extracted from plants using the green extraction method. The extracted particles were of good structural and optical properties, making them suitable for different applications in areas such as medicine, industry and agriculture.