Synthesis of silver selenide bicomponent nanoparticles by a novel technique: Laser-solid-liquid ablation
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A novel laser-solid-liquid ablation technique has been developed to synthesize Ag2Se nanoparticles; from silver nitrate and selenium powder in a mixed solvent of 2-propanol and ethylenediamine. The products were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The XRD indicated that the products were the single phase of silver selenide. The TEM images revealed that the as-prepared Ag2Se grains were homogeneous and spherical, and their average size was about 30 nm. This novel technique can be extended to prepare other nanoparticles of various compositions. (C) 2001 Academic.