Low-dimensional Nanomaterials On Low Temperature Synthesis And Characterization

In recent years, the nanometer material in atomic physics,condensed matter physics, colloidal chemistry, solid chemistry, coordination chemistry, chemical reaction kinetics and the application of surface etc had been applied gradually,it makes more and more people get attention. Low-dimensional nanometer material gets extra attention in magnetic, heat, light, electric and mechanical properties of the unique performance aspects .There are many preparation methods for the low-dimensional nanometer material, Low thermal solid-phase method is a new synthesis method that has developed for nearly thirty years.Because of the Low thermal solid-phase method has no solvents, simple operation,low pollution , suitable for large scale production,that make its advantages accepted gladly by people.This paper using low thermal solid-phase method compounds manylow-dimensional nanometer materials such as the GdF3, NaGdF₄ and ZnO , realizes the synthetic produc t was needed surfactants, concentration, temperature, etc, so as to control the determination of product of morphology. The contents of this paper are as follows: Using EG and SDS for surfactant, I have compounded the zinc oxide nanoparticles and nano stick respectively with the low thermal solid-phase method and using X-ray diffraction(XRD), thermo gravimetric (TG), Scanning electron microscope (SEM), Transmission electron microscopy (TEM) and electron diffraction methods for the preparation of characterized the products. Discussing different zinc salts, reactant ratios, surfactants ect conditions on the influence of the products and discussed preliminarily the possibility of reaction of mechanism .Results show that, using the preparation of ethylene glycol for surfactant zinc oxide nanoparticles in the average size of particles income 10 nm, The uniformity of the particles obtained better; Using the SDS for surfactant, preparation of nanometer ZnO nanostructures sticks out. for the average length of a micron, the diameter of the average length is 70nm . Using the low thermalsolid-phase method have compounded the fluoride gadolinium nanostick with the surfactant of ethylene glycol.Through X-ray diffraction(XRD), thermogravimetric (TG), Scanning electron microscope (SEM), Transmission electron microscopy (TEM) and electron diffraction methods for the preparation of characterized the products.Discusses the reaction time, heating temperature, grinding sequence, surfactants and fluoride agent on the influence of product morphology and discusses the possibility of reaction mechanism.Experiment also detected fluorescence performance on the Fluoride doped Eu³⁺.Doped product has strong red light emission.The results show that the products of diameter in between 80-200 nm , length can reach microns and doped product has strong red light emission.Experiment using glycol for surfactant compounded the NaGdF₄ nano stick with fluorinated agent of NaF.Through X-ray diffraction(XRD), thermogravimetric (TG), Scanning electron microscope (SEM), Transmission electron microscopy (TEM) and electron diffraction methods for the preparation of characterized the products.Discusses the reaction time, heating temperature, reactant ratio, surfactants and fluoride agent on the influence of product morphology and discussing the possibility of reaction mechanism.Experiment also detected fluorescence performance on the NaGdF₄ doped Eu³⁺.Results show that the products are uniform stick nanometer materials, there diameter in between 50-70 nm and average length is 300 nm and doped product has strong red light emission.