Critical nucleus size effects on nanoparticle formation in microemulsions: A comparison study between experimental and simulation results

Synthesis of sulfur nanoparticles in aqueous surfactant solutions

“…As a result, lower particle size is obtained when inter-particle exchange rate is low due to higher adsorbed surfactant film stability. Indeed, this may be the similar phenomenon that the effect of surfactant film flexibility in intermicellar exchange in reverse microemulsion system reported by Tojo and his coworkers [28][29][30]. The other portion of the curve in CTAB can be explained similarly that of SDBS and TX-100.…”

Simulation of the kinetics of nanoparticle formation in microemulsions

“…But, as we pointed out before, even in the case of very fast reaction rates, micellar exchange plays an important role. We know that, for a given microemulsion system, the main factors affecting the nucleation rate are reactant concentration, critical nucleus size and chemical reaction rate [6,38,39]. The first factor can be disregarded because the concentration of total metal ions was fixed in the experiments described.…”

Size distribution of nuclei formed by homogeneous nucleation in closed systems

“…Maximum size of newly forming droplets at t = 6 s does not correspond to the highest initial supersaturation (S i = 5) as standard model (constant supersaturation) predicts but at S i = 4. Similar general behavior of nucleation and growth process have been found at nanoparticle formation in microemulsions (Tojo, Barroso, & de Dios, 2006), where Monte Carlo simulations (used for phase transition model) were compared with experimental data. It was shown that an increase in critical nucleus, which corresponds to supersaturation decrease (see Eq.…”