Search

Hierarchical Pb microstructures have been successfully synthesized viaa facile electrochemical deposition route in air at room temperature, employing Pb(NO3)2as the precursor in the presence of tartaric acid. The phase and morphology of the as-prepared product were characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), selected area electron patterning (SAED) and scanning electron microscopy (SEM). Some factors influencing the formation of hierarchical Pb microstructures were systematically investigated, including the deposition current, duration, the original amount of tartaric acid, Pb2+ion source, and additive. Experiments showed that tartaric acid and Pb(NO3)2were indispensable in the formation of hierarchical Pb microstructures. [ABSTRACT FROM AUTHOR]

In this paper, large dendritic Bi nanostructures were synthesized viaa facile electrochemical deposition route at room temperature, employing Bi(NO3)3·5H2O as the reactant without assistance of any additive and protection of an inert atmosphere. The phase and morphology of the as-prepared product were characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometer (EDS), (high resolution) transmission electron microscopy (HR/TEM), selected area electron pattern (SAED) and scanning electron microscopy (SEM). Some factors influencing the formation of dendritic Bi nanostructures were investigated, including the depositing time, current, complexing agent, surfactant, the original amount and existing state of Bi(iii). Experiments showed that the existence state of Bi(iii) in the system, the depositing time and some complex agents could markedly affect the morphology of the final product. Also, the as-obtained product is found to have potential applications in the detection of trace metal such as Cd in water resource. [ABSTRACT FROM AUTHOR]

Abstract: Urchin-like CuO microspheres have been successfully synthesized via a simple water–ethyleneglycol (water–EG) mixed-solvothermal route at 100°C for 12h, employing cupric chloride (CuCl2) and potassium hydroxide (KOH) as starting reactants in the absence of any surfactant or template. The as-obtained product was characterized by means of powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and field-emission scanning electron microscopy (FESEM). It was found that the volume ratio of water and EG played an important role in the formation of urchin-like CuO microspheres. The UV–vis absorption and the photocatalytic degradation for organic dyes of the final product were also studied. [Copyright &y& Elsevier]

Abstract: In the present paper, we reported the successful synthesis of dumbbell-like YF3 nanostructures with a high yield in a mixed system of water/N,N-dimethylformamide (DMF) under the assistance of ultrasound waves of 40kHz with the ultrasonic power of 100% (200W) at 65°C for 2h, employing Y2O3 (99.99%) and NH4F as the starting reactants. The product was characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), selected area electron diffraction (SAED) pattern and field-emission scanning electron microscopy (SEM). Some factors influencing the morphology of YF3 nanostructures, including the ultrasonic time and power, the amount of NH4F, and the ratio of water/DMF, were systematically investigated. Research showed that the morphology of YF3 could be tuned by the volume ratio of water/DMF. The roles of DMF and the ultrasonic wave in the formation of YF3 nanostructures were discussed. [Copyright &y& Elsevier]

Abstract: In the present paper, novel t-Se microspheres with holes were successfully prepared via a facile solution-phase approach at 150°C for 20h, employing SeO2 and glucose as reagents, poly(vinylpyrrolidone) (PVP) as the surfactant. The phase and morphology of the product were characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The conversion from α-Se to t-Se was investigated by a series of experiments and a possible formation process was suggested based on the experimental results. [Copyright &y& Elsevier]

We report the successful preparation of flower-like ZnO microstructures in one step by a simple, rapid and reliable ultrasound irradiation route, using only Zn(CH3COO)2 and NaOH as starting materials. The product was characterized by powder X-ray diffraction, energy-dispersive X-ray spectrometry, transmission electron microscopy and scanning electron microscopy. The UV–vis absorption and emission spectra, photocatalytic activity and electrochemical properties of the as-obtained flower-like ZnO microstructures were studied. [Copyright &y& Elsevier]

ZnS nanoparticles about 3 nm in size were prepared by a simple, rapid and reliable route under microwave irradiation in a heterogeneous system, using ZnAc2·2H2O (Ac&z.dbnd6;CH3COO) and Na2S·9H2O as the starting materials, ethylene glycol (EG) as the medium. The product was characterized with X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and ED, respectively. The optical properties of ZnS nanoparticles were studied. [Copyright &y& Elsevier]

Abstract: In this paper, we report the hydrothermal preparation of Cd(OH)2 nanowires and further conversion to CdO nanobelts, CdS nanowires and CdSe nanoparticles through thermal treatment, solvothermal and mixed-solvothermal routes, respectively. The as-obtained products were characterized by means of powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FEMSEM). Research showed that four cadmium compounds were good photocatalysts for the degradation of organic dyes such as Safranine T and Pyronine B, under irradiation of 365nm UV light. The order of catalytic activity of different materials was found to be Cd(OH)2

Abstract: In this paper, we report the successful synthesis of Ni12P5 hollow spheres via a facile hydrothermal route, employing white phosphorus (WP) and nickel nitrate as the reactants in the presence of hexamethylenetetramine (HMT) and polyethylene glycol 10000 (PEG-10000). The phase and morphology of the product were characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). HMT and surfactant (PEG-10000) played important roles in the formation of Ni12P5 hollow microspheres. Furthermore, research also showed that the as-prepared Ni12P5 hollow spheres could photocatalytically degrade some organic dyes such as Safranine T and Pyronine B under irradiation of 365 nm UV light. [Copyright &y& Elsevier]

Abstract: CuO nanorods were obtained through the reaction of cupric dodecyl sulfate (Cu(DS)2) and NaOH at 80°C. The products were characterized by powder X-ray diffraction, transmission electron microscopy, selected area electron diffraction, X-ray photoelectron spectroscopy and UV–vis absorption spectroscopy. The probable mechanism of the formation of CuO nanorods was discussed. [Copyright &y& Elsevier]

Large-scale of long NbS2 nanowire strands were successfully synthesized by a catalyzed transport reaction involving C60. The strands have a diameter of 1–2 μm and length up to 0.5 mm, which are composed of single nanowire. The diameter of single nanowire is 1.6–20 nm. The products were characterized by powder X-ray diffraction, transmission electron microscopy, selected area electron diffraction, high-resolution transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Probable mechanisms for catalytic growth were proposed. [Copyright &y& Elsevier]