Biogenic Silver Nanoparticle and Their Applications

Nanoparticles ranges in size between 1 and 100 nm. Nanoparticles can be synthesized using physical and chemical processes but these methods pose various harmful impact on environment. Now the focus has shifted towards biogenic synthesis as these methods are highly sustainable. The characteristics of nanoparticles depends upon various factors such as incubation conditions, molar concentration of metal precursor solution, pH and biogenic extract employed for synthesis. Various biogenic sources for the production of nanoparticles are bacteria, fungi, plant and its parts, and algae. Silver (Ag) has many inherent properties due to which it has been used over period of time. Biogenic silver nanoparticles (Ag-NPs) have various applications in wide research areas including nanomedicines, biosensing and others. Biogenic Ag-NPs have been extensively studied for its antimicrobial action and it has been found that Ag-NPs are highly effective against gram negative bacterial species as compared to gram positive ones. Ag-NPs have been studied their dye degrading and heavy metal removing capabilities and it has been found that biogenic Ag-NPs have high potency as an environment remediating agent.