Abstract
Abstract Over the last decade, nickel nanoparticles (NiNPs) have been investigated for various potential applications due to their superior ferromagnetic properties such as magneto-crystalline anisotropy, high coercive forces, and chemical stability. Therefore, there has been a tremendous enhancement in the synthesis techniques, proposed reaction mechanisms, and applications of NiNPs. This paper presents a recent overview of the synthesis, reaction mechanisms, and applications of NiNPs. NiNPs in the size range of 1–100 nm are synthesized by various methods for research and commercial applications. The synthesis techniques are classified into three main types, namely, top-down, bottom-up, and hybrids of top-down and bottom-up protocols including solvothermal, physical, and chemical approaches. The detailed reaction mechanisms in the formation of NiNPs, especially for biosynthesis techniques, are extensively described. Trends in NiNP applications in fields such as biomedical, catalysis, supercapacitors, and dye-sensitized solar cells are explored. The basic advantages and role of NiNPs as a catalyst for various reactions are illustrated here.
Highlights
In the last decade, nanotechnology has broadened the scope for researchers, producers, and consumers in almost all sectors by enabling the engineering of functional systems at the nanoscale level mostly in the form of nanoparticles [1]
The results showed that the Ni nanoparticles possess an enhanced anti-inflammatory and larvicidal activity when compared to the crude leaf extract
Terpenoids play a significant role in the biosynthesis of silver ions to metallic nanoparticles when Geranium leaves extracts are used in the reactions; the major terpenoid of Cinnamomum zeylanisum is eugenol, which was found to be involved in the bio-reduction of HAuCl4 as well as AgNO3 to nanomaterial [91]
Summary
Nanotechnology has broadened the scope for researchers, producers, and consumers in almost all sectors by enabling the engineering of functional systems at the nanoscale level mostly in the form of nanoparticles [1]. Advanced nickel nanoparticles technology: from synthesis to applications 1457 and nickel–iron alloys [7] These reviews did not focus on NiNPs; they discussed nickel oxides and alloys. There is the need for thorough analyses of synthesis, reaction mechanisms, and applications of NiNPs. The synthesis of Ni nanoparticles has often been associated with various challenges. NiNPs must be characterized immediately after production to avoid conversion to Ni compounds like oxides and hydroxides These factors must be taken into consideration in planning the synthesis of Ni nanoparticles [28]. The present study was designed to analyse recent synthesis, reaction mechanisms, and applications of Ni nanoparticles as well as the specific advantages of using Ni as a catalyst. The scope of this study will be limited to addressing the applications of Ni nanoparticles in various fields of nanotechnology, science, and biomedical sciences as well as to discuss the specific advantages of Ni nanoparticles as catalysts in reactions, as compared to other magnetic nanoparticles
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
