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In this thesis, using the microwave method, hydrothermal, solvothermal reflux method successfully synthesized Bi2S3 nanomaterials with different morphologies. Were characterized by SEM, TEM, HRTEM, XRD and other products prepared. The main content is divided into four parts: the microwave decomposition single-source precursor method prepared Bi2S3 nanoflowers; Hydrothermal Synthesis of Bi2S3 nanoflowers; interfacial reaction method of two-phase solvothermal synthesis of Bi2S3 nanorods; reflux single-source precursor prepared Bi2S3 nanoflowers . Bi (S2CNEt2) 3 single-source precursor for the raw materials, ethylene glycol as a solvent, Bi2S3 nanoflowers successfully prepared under microwave heating. XRD analysis shows that the obtained product is orthorhombic, calculated lattice parameters of α = 0.4011 nm, b = 1.114 nm, c = 1.136 nm. SEM and TEM photographs show that the preparation of Bi2S3 is a diameter of 80 ~ 135 nm, a length of 0.9 ~ 1.5μm nanorods assembled into Nanoflower. UV-Vis results show that the Bi2S3 nanoflowers direct band gap width of 1.72 eV. Microwave irradiation time, solvent and surfactants have an impact on the morphology. To Na2S2O3 · 5H2O BiCl3 as raw material, polyvinyl alcohol PVA-124 hats agent by hydrothermal method successfully prepared Bi2S3 nanoflowers. The XRD findings of Bi2S3 nanoflowers is orthorhombic, calculated unit cell parameters α = .3982 nm, b = 1.113 nm, c = 1.132nm. SEM analysis showed that the Bi2S3 nanoflowers super structure is assembled by 50 ~ 80 nm thick nanosheets. TEM and HRTEM analysis further confirmed this result. Also explores the different reaction time, reaction temperature on the morphology of the different amount of PVA-124. UV-vis analysis that The Bi2S3 Nanoflower energy band gap of 1.55 eV. Bi (NO3) 3.5 H2O and CS2, as raw material, with the two-phase interfacial method successfully prepared a diameter of 50 ~ 200 nm, and a length of 0.9 ~ 2.5μm bismuth sulfide nanorods. Product structure, composition, morphology and optical properties with XRD, SEM, TEM, HRTEM and UV-Vis characterization and analysis. The results show that, Bi2S3 nano-rod is orthorhombic cell parameters α = 0.3981 nm, b = 1.105 nm and c = 1.134 nm. Studies have found that the reaction time, the reaction temperature and the reaction medium (the two-phase interface) has an important effect on the morphology. UV-Vis analysis showed that bismuth sulfide nanorod is a direct band gap of 1.57 eV of a semiconductor material. Order to Na (S2CNEt2,) · 3H2O and Bi (NO3) 3.5 H2O as raw material, the first obtained of Bi (S2CNEt2) 3 single-source precursor, then Bi (S2CNEt2) 3 as raw materials, ethylene glycol as the reaction solvent reflux method successfully prepared Bi2S3 nanoflowers using XRD, SEM, TEM, HRTEM, SAED, and UV-Vis characterize polymorphs, morphology, structure and optical properties of the product. The results show that: the bismuth sulfide nanoflowers belongs to the orthorhombic system, and from 70 to 130 nm in diameter and a length of 0.2 ~ 0.5μm nanorods from the center to the surrounding divergent self-assembled. UV-Vis analysis Bi2S3 nanoflowers bandgap energy of 1.62 eV.
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