Microwave Synthesis of Silver Sulfide and Silver Nanoparticles: Light and Time Influence.

ABSTRACT: Silver sulfide (Ag₂S) is a low band gap material, which absorbs near-infrared light and is of great importance in areas such as nanotechnology and biomedicine. We report the influence of the starting reagents, synthesis time, and light radiation on the geometry and size of silver sulfide nanoparticles and on the fraction of metallic Ag obtained in a microwave reactor. The X-ray diffraction diffractograms confirmed that Ag₂S is the main product if the reaction's precursor contains silver in the oxidation state of +1 and mostly metallic silver (Ag°) when it is +2. Small nanoparticles (∼6 nm) of spherical geometry are present in the transmission electron microscopy images for the synthesis performed with the lamp light ON, while with the light switched OFF, wider and hun

SUBMITTER: Magalhaes Sousa D 

PROVIDER: S-EPMC7288597 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature