Facile Microwave-assisted Synthesis Manganese Doped Zinc Sulfide Nanoparticles.

ABSTRACT: Undoped and manganese doped zinc sulfide nanoparticles were produced by a fast, one-step and two-component microwave-assisted synthesis method. The solid phase retains around 78% of the initial Mn concentration, as revealed by Particle Induced X-ray Emission analysis. X-ray diffraction patterns confirmed zinc blende structure and in the transmission electron microscopy images, nanoparticles with triangular prism and cube shapes were observed, respectively with an average particle size around 7?nm and 13?nm. Dried powders of zinc sulfide nanoparticles, doped with 0.1?mol% and 0.7?mol% of Mn ions, show highest brilliance of luminescence under UV light. Increasing dopant levels resulted in a diminishing emission that vanishes above 4% of dopant concentration. The synthesis of ZnS was monitored and two main events were detected, one at 145?°C corresponding to the sol-gel phase formation and another after ~3?min at 300?°C where the precipitation of the zinc sulfide nanoparticles occurs.

SUBMITTER: Sousa DM 

PROVIDER: S-EPMC6207788 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature