Synthesis and Characterization of Monodispersed Silver Particles Prepared through Wet Chemical Reduction Method Using Silver Sulfate

Abstract

Silver powder was prepared through chemical reduction method using silver sulfate in sulfuric acid. Various types of reducing agent were used. When ascorbic acid was used as reducing agent, monodispersed silver particles which had uniform polyhedron morphology and high crystallinity were obtained. Monodispersed silver particles were formed when the molar ratio of ascorbic acid and silver sulfate was 1. The volume average particle size of silver powder derived from ascorbic acid was 290 nm. The thickness of gum Arabic absorbed on silver particles was 11 nm. The crystallinity of silver powder became higher so that the reduction force of reducing agent was strong. Thermal mechanical measurement showed that the shrinkage of silver paste derived from silver sulfate was lower than that of silver paste derived from silver nitrate. Electrical measurements revealed that the speci c resistivity of the silver paste sintered at 900 for 60 min was 1.74 × 10 −8 Ω m.

Extremely Monodispersed Micrometer-Scale Spherical Particle Synthesis of Ag Inside a Microdroplet Vaporizing in Plasma

“…Figure compares our CV value with previously reported values obtained using various particle synthesis methods, such as chemical reduction, − hydrothermal synthesis, , spray pyrolysis, laser ablation, , and laser melting. , For relatively small particle sizes (less than 300 nm), monodisperse particles with CV values less than 10% can be synthesized by using chemical reduction methods. For relatively large particle sizes (measuring micrometers), there are few reports of CV values below 10%.…”

“…Comparison of CV values and particle diameters of synthesized particles with those reported in literature for spherical or quasi-spherical Ag particles using various particle synthesis methods. − …”

Performance of plasma source and irradiation for optical properties improvement of gelatin/silver composite

“…There was a few research that investigated the usage of gelatin/silver composite in solar cells [29]. This is a result of the usage of silver (Ag) particles in electrical devices, including various production techniques [30][31][32][33][34]. Silver particles are used as the electrode materials in silicon-based solar cell panels [32,35].…”