Thus the desired crystallite size is successfully obtained. The XRD studies are used to determine the crystallite size of the core/shell nanocomposites. The calculated amount is used to prepare the core as well as the shell which is formed by a simple wet chemical method and addition polymerization. The theory behind this is to calculate the amount of precursor. Weight is proportional to the product of volume and density. To form the core and the shell set the diameter fixed and measured theoretically. Here, lead sulfide (PbS), tin oxide (SnO2), and Cadmium Sulfide (CdS) core materials are coated by the polypyrrole (PPy). Therefore the synthesis of controlled crystallite size nanoparticles is important for the above-mentioned applications. Most of these applications vitally depend on the size of the nanoparticles. They have applications in optical, electronic, and magnetic devices. Metal nanoparticles are used as various types of catalysts, adsorbents, and sensors. In the present work, different metal oxide and metal chalcogenide are used as the core materials with the controlled grain size coated by the polymer. Surprisingly, NiT is a stable powder under many circumstances, allowing us to securely handle, store, and move it, whereas Ni/NiO may be created by the calcination process at the site of application. Magnetic experiments revealed that NiT samples had para-magnetic fields, whereas Ni/NiO samples have improved ferromagnetic nature dependent on the thickness of the oxide shell. The dielectric constant of NiT samples was observed high and low loss factor (tanδ) in comparison with Ni/NiO samples. The magnetic, dielectric and optical properties of the synthesized NiT and Ni/NiO Powder samples were also investigated. This synthesis protocol can be further generalized to create different metal/metal oxide core/shell nanostructures. C, leading to the formation of Ni/NiO core/shell structure, which was confirmed by diffraction techniques, electron microscopes, optical and magnetic measurements.Differential Scanning Calorimeter (DSC) analysis of NiT powder was shown that the tartrate molecules dissociate at a temperature of ~393

The results show that the method of mixing reactant species has a significant impact on the chemistry of the reaction, the morphology of the particles, and the production rate. The synthesis technique is quick, energy-efficient, and toxic-free, with the potential for large manufacturing. The current work describes a simple and uncomplicated chemical process for the production of Nickel tartrate (NiT), proceeded by powder calcination in an air atmosphere to generate the Ni/NiO core-shell nanostructure.

Core shell nanoparticle applications