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Solubility and preferential solvation of nimodipine and azlocillin drug compounds in (ethanol+ ethyl acetate) mixtures , Brazilian Journal of Chemical Engineering (2025)

Zinc cobalt sulfide (ZnS–CoS) nanoparticles have emerged as promising electrode materials for supercapacitors due to their excellent electrochemical properties. However, achieving both high energy density and power density remains a challenge due to particle agglomeration and instability. In this work, dynamic light scattering-based optimization of ZnS–CoS nanoparticles is carried out by adjusting synthetic parameters including temperature, pH, reagent addition rate, and stabilizer concentration, resulting in significantly smaller particle sizes and improved stability. The optimized ZnS–CoS nanoparticle-based electrode exhibited an exceptional specific capacitance of 1156 F g1, an energy...

TiO2–SiO2 nanoparticles are promising materials for energy storage devices, but optimization of the stability, particle size, and electrochemical performance is still a challenge. The optimal synthesis conditions were determined for TiO2–SiO2 nanoparticles at ratio of 1:1, pH 1, synthesis temperature of 35 ◦C, and 2 % PVA. Under these all-post optimization conditions, the nanoparticles exhibited enhanced stability (􀀀 23.26 mV) and minimized hydrodynamic size (189 nm) as confirmed by dynamic light scattering, along with a slight increase in the band gap. Electrochemical studies revealed superior performance, with the optimized NPs achieving a specific capacitance of (1038 F/g at 2.5 A/g)...