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Aluminum-doped ZnO (AZO) nanoparticles with different Al doping levels were synthesized using a microwave-assisted method. The synthesized AZO crystal structure and shape were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results show that the produced nanoparticles can be fully assigned to the hexagonal wurtzite ZnO crystalline structure. SEM results showed...
Various loading amount of La-CuO/TiO2 were synthesized via a one step sol-gel process. The crystal structure and chemical properties were characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD analysis revealed that two characteristic peaks at 35.54° and 38.76° according to cubic CuO were observed in the X-ray diffraction patterns of La-CuO/TiO2. Ti4+, Olat into...
A series of Zn2+ and Eu3+ co-doped TiO2 catalysts were prepared by a modified sol-gel method. The prepared catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy(TEM) and ultraviolet-visible diffuse reflection spectroscopy(UV-vis DRS). Characteristic results clearly show that all of Zn2+ and Eu3+ co-doped TiO2 samples exclusively consist of primary anatase crystallites,...
We report thermoelectric characterization of Bi2-xSbxTe3 (x = 0.5, 1.0, and 1.5) synthesized by a solvothermal method using DMF as solvent. For Bi2Te3, the size of the edge and thickness of the hexagonal nanoplatelets are 200-250 nm and 20-25 nm, respectively. Bi2Te3 nanosheets appear to grow epitaxially from the surface of the Te tubes, which forms in the first step and acts as the template for the...
Nanostructuring is one of the effective approaches to lower the thermal conductivity of materials. Nanostructured skutterudite-related compounds CoSb3, Fe0.5Ni0.5Sb3, Fe0.25Ni0.25Co0.5Sb3 and Te-doped CoSb3 were synthesized by a solvothermal route. The bulk materials were prepared by hot pressing or spark plasma sintering from the solvothermally synthesized nanopowders. The thermal conductivity values...
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