Synthesis and Characterization of Water-soluble Sb₂S₃Quantum Dots

Abstract

Abstract. Taking thioacetamide (TAA) as sulfur source and mercaptoacetic acid as capping agent, water-soluble Sb 2 S 3 quantum dots were synthesized in aqueous-phase with precipitation method. The influence of temperature (65 to 85 qC) and reaction time (3 to 7 h) on morphological characteristics of the products was studied. The as-prepared Sb 2 S 3 quantum dots were characterized with X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible spectrophotometry (UV-vis) and photoluminescence (PL), which suggested the Sb 2 S 3 quantum dots have uniform size distribution and excellent optical properties. Moreover, a formation mechanism of Sb 2 S 3 quantum dots was also proposed.

SOLVOTHERMAL SYNTHESIS OF Sb2S3 NEEDLES AND STUDY OF THE EFFECT OF THEIR INTERGROWTH ON THEIR OPTICAL PROPERTIES

“…1D nanostructures of Sb 2 S 3 such as nanorods, nanowires, microtubes and nanobelts are common, since the material usually grows anisotropically in the axial direction. Such structures can be obtained by using different synthetic methods: thermal evaporation at high vacuum [3], spray pyrolysis [4], precipitation [5], ionic liquid assisted ultrasonic bath [6], sonochemistry [7 ], colloidal [8], hydrothermal [9,10] and solvothermal [11]. The simplest technique is the hydro-or solvo-thermal synthesis, which additionally it is very powerful for obtaining crystals of good quality with even atypical morphologies.…”