Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

Mai Ngọc Tuan Anh

Abstract


Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

Keywords


silver nanoplate, seed-mediated, plasmon resonance, L-Ascorbic acid



DOI: https://doi.org/10.15625/0868-3166/29/3/13763 Display counter: Abstract : 35 views.

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