Recent development in nanoscience and nanotechnology has contributed to the wide applications of metal and metal oxides nanoparticles in several field of sciences, research institutes and industries. Among all metal oxides, copper & copper oxide nanoparticles has gained more attention due to its distinctive properties and applications. The high cost of reagents, equipment and environmental hazards associated with the physical and chemical methods of synthesizing opper & copper oxide nanoparticles has been a major setback. In order to puffer solution to the aforementioned challenges by reducing environmental pollution and production of cheaper nanoparticles with good properties and efficiency, this review focus on collection of comprehensive information from recent developments in the synthesis, characterization and applications from previous scientific findings on biological method of synthesizing opper & copper oxide nanoparticles due to the acclaimed advantages of been cheap, environmentally friendly, convenient and possibility of been scale up in into large scale production reported by numerous researchers. Our finding also support the synthesis of opper & copper oxide nanoparticles from plant sources due to relative abundance of plants for the production of reducing and stabilizing agents required for opper & copper oxide nanoparticles synthesis, potential efficiency of plant biomolecules in enhancing the toxicity effect of opper & copper oxide nanoparticles against microbes, prevention of environmental pollution due of nontoxic chemicals and degradation effectiveness of opper & copper oxide nanoparticlessynthesized from plant sources. Furthermore, this study provide useful information on the rapid synthesis of opper & copper oxide nanoparticles with desired properties from plant extracts.

Keywords:  Green synthesis, Copper & Copper oxide Nanoparticles, Antimicrobial activity.