Synthesis of Nickel Oxide Nanoparticle using different synthetic method and their Applications: A review

Abstract- In the last decade, NiO nanostructures (NSs) have gained a growing attention from the scientific community because they are cheap, facile to produce and isolate, which is an important transition metal oxide in various applications significantly as energy storage material.  Throughout this review, the most widely employed and effective synthetic techniques are summarized and their advantages and drawbacks are highlighted and compared. Almost all these synthetic pathways produce amorphous nanostructures that need to obtain crystalline products. Various easy and widely used method to prepare nickel oxide has been discussed which includes wet chemical synthesis, sol–gel method, hydrothermal method, microwave assisted route and thermal decomposition. Then physical properties are reviewed briefly including its structural, magnetic, electrical and optical properties.