Synthesis and Characterization of Pure Ni and Ni-Sn Intermetallic Nanoparticles

Area of Science:

• Materials Science
• Nanotechnology
• Inorganic Chemistry

Background:

• Nanoparticles offer unique properties due to their high surface-area-to-volume ratio.
• Nickel and its alloys are crucial in catalysis and magnetic applications.
• Controlling nanoparticle composition and phase is key to tailoring their performance.

Purpose of the Study:

• To synthesize Ni and Ni-Sn nanoparticles using a chemical reduction method.
• To characterize the morphology, size, and phase composition of the synthesized nanoparticles.
• To investigate the effect of Ni:Sn ratio on the resulting nanoparticle characteristics.

Main Methods:

• Chemical reduction synthesis using hydrazine hydrate as the reducing agent.
• Utilized purified water and diethylene glycol as solvents.
• Characterization via scanning electron microscopy (SEM) and powder X-ray diffraction (XRD).

Main Results:

• Spherical Ni and Ni-Sn nanoparticles were successfully synthesized.
• All Ni-Sn nanoparticles contained pure Ni and a low-temperature Ni3Sn2 phase.
• Nanoparticle size decreased with increasing tin content; pure Ni nanoparticles were largest.
• Ni3Sn and Ni3Sn4 phases were not detected.

Conclusions:

• The chemical reduction method is effective for synthesizing Ni and Ni-Sn nanoparticles.
• The phase composition is dominated by Ni and Ni3Sn2, irrespective of the initial molar ratio.
• Tin incorporation influences nanoparticle size and morphology.