Is there any effect of reductant molarity and reduction temperature to the grain size of nanoparticle? How are they affect it?
yes there is an important role played by reductant ,olarity and reduction temperature.With increase in concentration and temperature the particle size increases.
Dear Yusuf Pradesar:
Look at the reaction. The reaction of hydrazine nickel ion reduction takes place exothermically .
Ni2+ + N2H4 + 4OH- = Ni + N2 + 4H2O
It is reversible. In accordance with the principle of Le Chatelier increase in the concentration of hydrazine and lowering the temperature will shift the equilibrium towards the formation of metal nanoparticles and vice versa.
Dispersity ( grain size of nanoparticle) determined by the size, surface area nanoparticles. The product of the surface tension on the surface area enables the surface energy. Surface tension is controlled surfactant. Direct effect of concentration and temperature, no. There is an indirect effect through the rate of nucleation of growth ... .
Best regards.
I was synthesized my ternary alloy nanoparticles in a solution containing benzyl alcohol, oleylamine, and oleic acid. When I was increased the molarity of benzyl alcohol, the grain size was became smaller. This also happend when I increase the reduction temperature. Is this result coresponding to any theory or any other experimental?
Theory creates for simple systems. You have a complex system. Three ionб water with three surfactantsб reductant. The effect of temperature and concentration of the complicated structure of water, micelle formation, adsorbtion, the nature of the ions, their interaction, kinetics. Therefore, your experiment agrees with the theory. Only she does not already exist on your system.
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