ABSTRACT
Nanotechnology provides areas that vary from conventional chemistry innovations to medical and climate technologies with productive applications. In practice, NPs have been synthesized by physical and chemical processes, including hydrothermal pyrolysis, spray pyrolysis, sonochemical, sol-gel, coprecipitation, and so on, using different chemical agents to minimize and maintain the harsh conditions of different chemicals to control the properties of the generated nanomaterials. NPs have been used as toxic agents. Biological synthesis is emerging as a green and safe method for synthesizing metal/metal oxide NPs with precursor materials from plants and microbes. Green synthesis of nanomaterials has emerged as an eco-friendly and alternative approach for the synthesis of novel nano-materials with great potential in medical and pharmaceutical applications. The nanomaterials generated from biomolecules, plant extract, algae, and microorganisms have been given considerable appreciation. It is believed the phytochemicals, alkaloids, flavonoids, and sugar compounds content to act as reducing and stabilization agents to prevent the agglomeration of the nanoparticles.
