Doped ZnS:Mn nanoparticles obtained by sonochemical synthesis

Abstract

A study of sonochemically synthesized ZnS:Mn nanoparticles is presented. The particles prepared at low rf power (about 20 W) and room temperature coalesce to form morphologically amorphous large species (30-100 nm in diameter). As the power is increased in the range from 20 to 70 W, and the solution temperature is raised to 60 to 80 degrees C, finer particles are produced with the size ranging from 2 to 20 nm and improved crystallinity. The results indicate the dispersion of the Mn(2+) ions at near-surface sites in the particles. It is shown that the sonochemically fabricated particles approach the quality of the ones obtained by a standard chemical route and show a reasonable luminescence performance.

Green synthesis, antimicrobial and cytotoxic effects of silver nanoparticles using Eucalyptus chapmaniana leaves extract

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Biosynthesis of silver nanoparticles synthesized by Aspergillus flavus and their antioxidant, antimicrobial and cytotoxicity properties

“…Thus, production and application of nanomaterials from 1 to 100 nanometres (nm) is an emerging field of research. [1][2][3] In the synthesis of nanoparticles, the various conventional processes like a number of chemical and physical methods including chemical reduction in aqueous or non-aqueous solution, 4 microemulsion, 5 sono-chemical 6 and microwave-assisted 7 methods have been applied.…”

Luminescent properties of fine-dispersed ZnS:Cu prepared using self-propagating high-temperature synthesis

“…The industrial use of activated ZnS for over 70 years stimulated more profound study of its physical characteristics defining a variety of luminescent properties of this material [1][2][3][4][5][6][7]. Nowadays, properties of luminescent centers formed by copper [4][5][6][7][8][9] and other impurities [10][11][12][13] in ZnS have been studied so well that the behavior of impurity atoms in these crystals can be reliably monitored by fluorescent techniques.…”