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Simplified hydrothermal synthesis and optical properties of core shell ZnS microspheres

MAOHUA LI1,2, YI LU1,2, JUNYIN HAO3,* , ZERONG LONG2, BO YANG2, YUMEI LIU1,*

Affiliation

  1. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi Xinjing 830046, China
  2. Xinjiang Supervision and Inspection Institute for Product Quality, Urumqi Xinjing 830011, China
  3. State key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Abstract

Zinc ace tylacetonate and thiourea are reacted in a 30:10 mixed water: glycerin solvent for 12 hours at 130°C to synthesize “core shell” ZnS microspheres. The ZnS microspheres are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), x ray diffraction (XRD), x ray photoelectron spectroscopy (XPS), energy dispersive x ray (EDX), high resolution transmission electron microscopy (HRTEM); and selected area electron diffraction (SEAD). Ultraviolet visible spectra (UV vis) and photol uminescence spectroscopy (PL) were used in an optical study of the product. The results show that the synthesized ZnS microspheres have a diameter of 3 5 micrometers, a smooth shell surface, and an inner core structure. The existence of glycerin is crucial to the formation of spherical ZnS. no spherical particles are obtained in reaction systems without glycerin, and a decrease in glycerin content of the system reduces the yield of spherica l products..

Keywords

Hydrothermal Reaction, Core Shell Structure, ZnS, Glycerin.

Citation

MAOHUA LI, YI LU, JUNYIN HAO, ZERONG LONG, BO YANG, YUMEI LIU, Simplified hydrothermal synthesis and optical properties of core shell ZnS microspheres, Optoelectronics and Advanced Materials - Rapid Communications, 8, 11-12, November-December 2014, pp.1091-1095 (2014).

Submitted at: Sept. 25, 2014

Accepted at: Nov. 13, 2014