Metal Oxide One-Dimentional Nanomaterials And The Doped Materials: Synthesis, Characterization And Properties

Since the discovering of the carbon nanotubes(CNTs) in the 1991, the nanotubesmaterials have been receiving significant attention and becoming hot research areas such asphysics, chemistry, materials due to the remarkable physico-chemical properties and theirgreat potential for broad fields.Vanadium oxide nanotubes(VONTs) represent the redox activity due to their mixedoxidation state and their unique electron transported character attribute to the anisotropicstructures. It is also possible that a significant mount of functional anions or cationsintercalate the VONTs layers by the exchanged action of cooperative ions. Thus, the VONTshave been developing the novel materials follow by the carbon nanotubes, which exhibited awide range of potential applications in catalysis, electrochemical devices and photochemistry.VONTs could offer the possibility of the structural modification because they have the fourdifferent contact regions, namely, the tube ends, the inner and outer wall surfaces as well asthe inter-wall spaces.Here, a series doped VONTs materials were prepared via a template-hydrothermaltreatment from V2O5 and octadecylamine by using atom W, lanthanide oxides Eu₂O₃, Gd₂O₃,and the polyoxometalates [Mo₆O₁₉]^2-, [PMo₁₂O₄₀]^3- as the dopant. And then the tungstenoxides nanotubes (WONTs) were prepared via the same treatment from H2WO4 andoctadecylamine. The morphology and microstructure of the nanotubes were characterized byelemental analysis, infrared spectra (IR), X-ray powder diffraction (XRD),scanning electronmicroscope (SEM), transmission electron microscopy (TEM), high-resolution transmissionelectron microscopy (HRTEM), the selected-area electron diffraction (SAED), and X-rayphotoelectron spectroscopy (XPS). Otherwise, we exam the electrochemical properties andthe catalysis properties. The main works include,1. Synthsis W doped VONTs (W-VONTs) via template-hydrothermal treatment, comfirmthe best dopant quantity and characterize the scroll-like morphology and microstructure ofthem by elemental analysis, SEM,TEM,HRTEM,XRD,IR and XPS. Exam theelectrochemical properties;2.Synthsispolyoxometalates(POMs)[Mo₆O₁₉]^2-,[PMo₁₂O₄₀]^3- dopedVONTs(POMs-VONTs) via template-hydrothermal treatment, and characterize the scroll-likemorphology and microstructure of them by TEM, XRD and IR, exam the electrochemicalproperties by simulated two poles battery and the catalytic properties by Ultraviolet(UV);3.SynthsislanthanideoxidesEu₂O₃,Gd₂O₃dopedVONTs(Ln-VONTs)viatemplate-hydrothermaltreatment,characterizethescroll-likemorphologyandmicrostructure of them by SEM, TEM, XRD and IR;4. Synthsis the tungsten oxide nanotubes (WONTs) via the same treatment, the morphologyand microstructure of them were cha SEM, TEM, HRTEM, XRD and IR. Ae time on the development of the tungsten oxide nanotubes is alsodracterized bypossible effect of reactiviscussed.