Silver Nitrate Synthesis Lab Report

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Materials and synthesis The fully organic phase system contains silver nitrate as a silver precursor, n-butylamine (BA) as an alkyl ligand dissolving silver salt, dodecanoic acid (DDA) as a capping molecule, toluene as a medium, and NaBH4 as a reducing reagent. The silver nitrate, DDA, BA, and NaBH4 were purchased from Junsei Chemical, and they were used as received without further purification. The scheme for direct synthesis of silver nanoparticles from silver nitrate in the organic phase is illustrated in the given figure. Silver nitrate was first dissolved in BA completely and then toluene was poured into the above solution, which resulted in a molar concentration ([Ag]) above 2 M. After addition of DDA and equimolar reductant, the solution became dark brown and then was refluxed for 1 h. After completion of the reaction, the products were precipitated by addition of acetone/methanol mixture. The precipitateswere collected through a glass funnel filter and then washed several times by methanol and acetone. Metallization and patterning Measurement of the specific electrical resistance with the fourpoint probe technique requires samples with uniform thickness, which can be made by spin coating. Ag NPs were …show more content…

With regard to dispersion, the Ag ink is still stable without other additional dispersants even at a metal content of 70 wt%. This is attributed to the MPC structure of Ag NPs. The figure above represents a series of inkjetting processes with time: the formation and jetting of a droplet with diameter 50 μm. Silver metallic lines were patterned on polyimide and then metallized at 250oC for 30 min. From the given study, it can be anticipated that the as-synthesized silver nanocrystal can be an excellent material for an electrode and therefore can be applied to printed

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