Shutang Chen

Trioctylphosphine as Both Solvent and Stabilizer to Synthesize CdS Nanorods

High quality CdS nanorods are synthesized reproducibly with cadmium acetate and sulfur as precursors in trioctylphosphine solution. The morphology, crystalline form and phase composition of CdS nanorods are characterized by transmission electron microscopy (TEM), high-resolution TEM and X-ray diffraction (XRD). CdS nanorods obtained are uniform with an aspect ratio of about 5:1 and in a wurtzite structure. The influence of reaction conditions on the growth of CdS nanorods demonstrates that low precursor concentration and high reaction temperature (260 °C) are favorable for the formation of uniform CdS nanorods with 85.3% of product yield.

One-pot self-assembly of flower-like Cu2S structures with near-infrared photoluminescent properties

Novel flower-like Cu2S structures with strong photoluminescence emission in the near-infrared region have been synthesized via a simple, low-cost, and environmentally friendly chemical reaction from an oleic acid solution containing Cu(NO3)2·3H2O and S. Field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) reveal the flower-like nanostructures are monodispersed in large quantities. The formation of the flower-like structures can be tuned by adjusting the molar ratio of the two reaction reagents, concentration of precursors, reaction temperature, or reaction time. The possible growth mechanism of the formation of flower-like Cu2S structures was proposed.