Nanocomposites and nanomaterials

Insights into synthesis of nanosized Ni and Fe particles by chemical reduction method 
Wodak I.1, Yakymovych A.1, Khatibi G.1,2 
1Institute of Chemical Technologies and Analytics, TU Wien, Vienna 1060, Austria
2Christian Doppler Laboratory for Lifetime and Reliability of Interfaces in Complex Multi-Material Electronics, TU Wien, Vienna 1060, Austria
E-mail: andriy.yakymovych @tuwien.ac.at

The synthesis of metal nanoparticles (NPs) by chemical reduction involves the reduction of metal ions of an inorganic soluble metal salt with a reducing agent [1]. This is the most common method to produce metal NPs due to its simple and reliable procedure.
 In this study, two procedures have been used to produce Fe and Ni NPs. According to the first procedure, the reduction of the metal salt by hydrazine hydrate in an aqueous solution, while sodium hydroxide has been used as a stabilizing solvent as well as polyvinylpyrrolidone as a surface stabilizer and as a protective agent. A similar method has been used in our previous study [2]. The second procedure is the so-called polyol chemical reduction using ethylene glycol as a reduction agent, while chloroplatinic acid has been used as a heterogeneous nucleating agent.
The powder X-ray diffraction has been employed to determine the phases presented in the nano-sized metal powder. The scanning transmission electron microscopy (STEM) has provided images from which the shape, size, and size distribution of the produced nanoparticles have been determined. 

Financial support for this study came from the Austrian Science Fund (FWF) under Project No. P 34894.
 
1.	Kvitek, L. et al., 2019, 'Physicochemical Aspects of Metal Nanoparticle Preparation', in S. M. Avramescu et al. (eds.), Engineered Nanomaterials - Health and Safety, IntechOpen, London. 10.5772/intechopen.89954.
2.	Yakymovych A, Ipser H. Synthesis and characterization of pure Ni and Ni-Sn intermetallic nanoparticles // Nanoscale Res Lett.-2017.-12.-142. doi: 10.1186/s11671-017-1894-2.