ABSTRACT
This chapter deals with the metallic nanomaterials using bioengineered routes from various sources of plants, microbes, and chemical routes via sonication and microwaving, etc. It discusses the photocatalytic, antibacterial and anticancer performances of metallic nanoparticles for multifunctional applications prepared by green route synthesis. Consequently, the chapter also discusses the encountered difficulties and prospects for the future application of metal oxide-based composites as promising candidates for the progress of highly efficient photocatalytic and biomedical systems. As metal oxide nanoparticles and composites constantly increase the huge attention from researchers all over the globe, the direction toward production and practical applications in advanced technology will quickly enlarge in a way encouraging the shift of novel green synthesized metal oxide nanocomposites from lab to industrial scale. In green chemistry, nanoscience and technology unlock novel prospects in physical, chemical and biophysical revolutions. The metallic nanoparticles have built the arena of synthesis, catalysis, enzyme immobilizations, and molecular communications simpler, quick and well regulated.
