Enhancement on the structural, functional, optical and morphological properties of temperature treated silver sulfide nanostructures

The Silver Sulfide (Ag2S) nanostructures were synthesized via the facile co-precipitation method. Thorough study and analysis were carried out to reveal and compare the structural, optical, functional, and morphological characteristics of as-synthesized samples annealed at various temperatures. The XRD analysis characterized the structural properties of Ag2S nanoparticles, which unveiled the excellent crystallinity and monoclinic structure. The as-synthesized samples show an average crystallite size of 52 nm-41.7 nm. The modes of vibration and peak position of metal sulfides in Ag2S nanoparticles were investigated through the FTIR technique. The optical attributes of prepared samples were scrutinized using UV-Vis analysis, which portrays the cut-off wavelength in the range of 1192-1223 nm for non-annealed and annealed Ag2S nanoparticles, alongside the optical band gap is about 0.86 eV-0.96 eV. This work elucidates a novel approach to synthesis and scrutinises the characteristics of Ag2S nanoparticles by subjecting them to distinct annealing temperatures precisely, as-prepared, 200 ?C and 400 ?C.