Direct TEM observation of the "acanthite α-Ag₂S-argentite β-Ag₂S" phase transition in a silver sulfide nanoparticle.

ABSTRACT: For the first time, the α-Ag₂S (acanthite)-β-Ag₂S (argentite) phase transition in a single silver sulfide nanoparticle has been observed in situ using a high-resolution transmission electron microscopy method in real time. Colloid solutions of Ag₂S nanoparticles and nanostructured powders of silver sulfide have been synthesized by one-stage chemical bath deposition from an aqueous solution of silver nitrate, sodium sulfide and sodium citrate. Ag₂S nanoparticles were heated to different temperatures directly in an electronic microscope by regulating the energy of the electron beam. This allowed observation of the transition of acanthite into argentite and the reversible transition of argentite into acanthite in real time, and this phase tra

SUBMITTER: Sadovnikov SI 

PROVIDER: S-EPMC9419763 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature