Preparation And Characterization Of Semiconductor Metal Sulfide, Selenide Nanomaterials

With the organic molecule or biological molecule assisting and providing the source of sulfur or selenylation, different morphology of sulfide and selenide: Bi2S3 urch-like nanostructure, PbSe nanodendrites and Ag2Se nanobowls, were prepared through a simple solvothermal route. The phase structures and the morphology of the as-synthesized samples were characterized by using a series of test. The possible formation mechanism is discussed. And also the photoluminescence(PL),wetting behaviour or photocatalytic activiey were studied.1.Bi2S3 urch-like nanostructures were synthesized though a solvothermal route by using ethylene glycol as the solvent with biological molecule(GSH) assisting and providing the sulfure source. The as-synthesized sample was characterized by x-ray diffraction (XRD),Raman, scanning electron microscopy (SEM), field emission SEM (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), Fourier transform infrared (FT-IR), Raman, X-ray photoelectron (XPS), and photoluminescence. The possible formation mechanism of the self-assembled urchin-like Bi2S3 complex nanostructures is discussed. The established complex nanostructure can control the surface topology of membrane to create superhydrophobic surface, The water contact angle (CA) of>150°can be obtained, which may find potential application in environmental chemistry.2.PbSe nanodendrites were synthesized though a solvothermal route by using aniline as the solvent with five-ring organic molecule selenophene assisting and providing the selenylation source. The phase structures of the as-synthesized samples were characterized by XRD and Raman spectroscopy. The morphology and structures were studied by SEM, FESEM, TEM, and HRTEM. The photoluminescence properties and growth mechanism are also studied. The wetting behaviour study of the as-synthesized samples was studied by measuring CA. The water CA of over 150°and low sliding angle of 1°of the complex PbSe nanostructures can be obtained.3. Orthorhombic phaseβ-Ag2Se nanobowls were synthesized though a solvothermal route by using aniline as the solvent with five-ring organic molecule selenophene assisting and providing the selenylation source. The phase structures of the as-synthesized samples were characterized by XRD and Raman spectroscopy. The morphology and structures were studied by FESEM, HRTEM.The photocatalytic activiey of the as-synthesizedβ-Ag2Se nanostructures was evaluated by photodegradation of rhodamine B(RhB) dye under ultraviolet (UV) light irradiation. The water CA of over 150°and low sliding angle of 1°of the complex PbSe nanostructures can be obtained.