One-pot solvothermal synthesis and characterization of highly stable nickel nanoparticles

Abstract

High stable nickel nanoparticles (NiNPs) have been successfully synthesized from nickel chloride as the precursor through a simple one-pot solvothermal process. A systematic investigation of the reaction parameters, namely, effects of reaction temperature, pH of precursor solution, the concentration of reactants, and reaction time on the formation of NiNPs, was carried out to obtain the optimal values for the synthesis. The optimum reaction temperature, pH, NiCl2·6H2O concentration, and reaction time are 190°C, pH 9, 0.1 M, and 24 h. The characteristic peaks of NiNPs have been confirmed by the Fourier transformer infra-red and surface plasmon resonance, with the presence of –OH stretching bands at 3,593 and 603 cm−1 (interaction with Ni and NiO) and λ max 265 nm, respectively. The X-ray diffraction and transmission electron microscope demonstrated the particle size of about 24 nm (by Scherrer) and 49 nm (Image-J), respectively, with the face center cubic phase. The synthesized NiNPs showed good stability, where the degradation of NiNPs was completed at 800°C with more than 97% residue as depicted by the thermogravimetry analysis. The synthesized NiNPs can be used as fillers to enhance the thermal, mechanical, and electrical properties of polymeric materials.

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

“…Then, the bismuth cations were reduced to Bi 0 by hydrazine. The decomposition of the latter allowed to have an elevated concentration of inert gas (nitrogen) in the autoclave, preventing the oxidation of particles at high-temperature conditions of the reaction . The relatively big size of the structures of sample Bi-S1 can be possibly ascribed to the occurrence of the Ostwald ripening effect, in which small particles are formed first and they are then dissolved and redeposited to produce bigger particles.…”

Role of surface‐active materials (amphiphiles and surfactants) in the formation of nanocolloidal dispersions, and their applications

“…XRD, TEM, TGA, and other methods were used to characterize the prepared nano particles. The solvothermal technology was fast, economical and falls in the line of green chemistry (Jaji et al, 2021).…”

Synthesis of Nickel-Based Nanoparticles by Pulsed Laser Ablation in Liquids: Correlations between Laser Beam Power, Size Distribution and Cavitation Bubble Lifetime

“…This is why several groups have been working on the synthesis of nickelbased nanoparticles. For example, Jaji et al prepared nickel-based nanoparticles using the one-pot solvothermal synthesis method, which involves a chemical reaction at a high temperature and a high reaction time [11]. Heilmann et al reported the synthesis of Ni nanoparticles via a synthetic route, which requires several chemical reactions of nickel acetylacetonate as a precursor, oleylamine as the reducing agent and solvent, dibenzyl ether as the co-solvent and trioctylphosphine as the stabilizer [12].…”