From Silver Plates to Spherical Nanoparticles: Snapshots of Microwave-Assisted Polyol Synthesis.

ABSTRACT: The fabrication of silver nanoparticles (Ag NPs) with different sizes by microwave (MW)-assisted synthesis is presented. The fast heating of the MW technique, combined with the possibility to thermally quench the reactions, enabled us to capture snapshots of nucleation and growth processes difficult to accomplish in other techniques. The Ag NPs were synthesized using poly(vinylpyrrolidone) (PVP) through a polyol approach. The effects of the reaction time, the reaction temperatures, and the silver precursor concentration were investigated. The influence of agitation, the PVP concentration, and the initial conditions of the silver precursor was also studied. It is found that at very short reaction times and at low temperatures, polyhedral plates are formed with sizes ca. 300 nm and large pol

SUBMITTER: Torras M 

PROVIDER: S-EPMC7097931 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature