Nickel Oxide Nanoparticles: A Brief Review of Their Synthesis, Characterization, and Applications

Abstract

Particles with size in the range of 1-100 nm, considered in any dimension, are called nanoparticles (NPs). Among various nanoparticles, nickel oxide nanoparticles (NNPs) are important because of their physical, chemical, and biological properties. In the past two decades, significant research has been done on the synthesis of NNPs. Their applications range from energy storage to catalysis to antifungal and antibacterial activity. This review provides a brief overview of various methods used for synthesizing NNPs, their properties, and their applications. The synthesis methods are classified into physical synthesis, chemical synthesis, and green synthesis involving plants and microorganisms, especially fungi. Particular focus is given to the types of precursors used for their synthesis, morphology, particle size, and applications.

Marine carrageenan‐based NiO nanocatalyst in solvent‐free synthesis of polyhydroquinoline derivatives

“…12 Among these methods, the chemical co-precipitation technique, because of the use of low and cheap raw materials, low reaction time, high production efficiency, and low-temperature synthesis, is considered an affordable technique for NiO nanoparticle synthesis. 24 A characteristic of nanoparticles is their high surface energy, which makes them tend to agglomerate. This inherent property reduces the contact surface and thus reduces the active site at the nanoparticles.…”

“…Upon synthetic approach, various nanostructures such as nanowires, spherical nanostructures, nanoflowers, and nanotubes have been reported for NiO NPs 12 . Among these methods, the chemical co‐precipitation technique, because of the use of low and cheap raw materials, low reaction time, high production efficiency, and low‐temperature synthesis, is considered an affordable technique for NiO nanoparticle synthesis 24 …”

Structure, properties, and antibacterial behavior of nickel oxide reinforced natural rubber nanocomposites for flexible electronic applications

“…Among various available metal oxides, nickel oxide (NiO) is an inorganic material with versatile and tunable properties such as high magnetic permeability due to its ferromagnetic nature 19 . NiO is a p‐type semiconductor that has exceptional conducting properties, making it suitable for application in a variety of electrical devices 20 . NiO nanoparticles also exhibit significant antibacterial activity, anticorrosive nature, and outstanding electrochemical behavior.…”

“…19 NiO is a p-type semiconductor that has exceptional conducting properties, making it suitable for application in a variety of electrical devices. 20 NiO nanoparticles also exhibit significant antibacterial activity, anticorrosive nature, and outstanding electrochemical behavior. These combined properties of NiO make it an efficient raw material in the fabrication of flexible electrochemical devices with substantial electrical and optical properties.…”

Enhancement of Surface and Interface Properties of Low Carbon Steel by Hybrid ZnO and NiO Nanoparticles Reinforced Tin Coating

“…Accordingly, the present work develops a promising solution for the modification of surface properties of low carbon steels through direct tinning processes using tin nanocomposite reinforced with nano-sized particles of NiO and/or ZnO. It's well known that NiO is highly resistant to corrosion, while ZnO is a multifunctional material due to its exceptional physiochemical properties and broad usefulness [30,31]. It is expected that the presence of these nanoparticles in the tin coated layer will greatly enhance the surface properties and consequently increase their lifetime and protect them from corrosion.…”