Synthesis And Character Research Of β-FeOOH Nano-materials

This paper summarize and analyze a large number of previous work, on these basis, we insist the spirit of science, innovation and practical principles, prepared the P-FeOOH nanoparticles by hydrolysis, and apply them to the adsorption of heavy metal ions, and useβ-FeOOH as precursor, gain other iron compounds by different treatment. Study the products we gained by scanning electron microscopy, transmission electron microscopy and X-ray diffraction, and other modern analytical instruments, and make some prospect of their application. The main contents of this thesis are as follows:1.This paper introduced the research situation ofβ-FeOOH, material structure, classification and characteristics of the preparation methods, and applications in various fields, and put forward further research of P-FeOOH based on the existing research, and given some feasible research program.2.β-FeOOH nanorods with two different morphologies were prepared by constant temperature, and forced hydrolysis from the precursor of FeCl3·6H2O solution, and gain well-assembled nanorods by control temperature. The morphology and structure were characterized by XRD, FTIR, SEM. We Compare the adsorp effect of Cr(VI) in aqueous solution of the two forms P-FeOOH nanorods, and through the adsorption kinetics was found that product by constant temperature hydrolysis can achieve satisfying removal in a short time.3.Orderly arranged P-FeOOH nanorods gained through dispersion process when surfactant is added, and by deoxidization of P-FeOOH in hydrogen can receive Fe3O4 nanorods with good magnetism, and compared the influence on the morphology of the product before and after assembly, and whether external magnetic field be filled, we also give the possible mechanism of its transformation.4.Investigate the sulfuration process curing on the surface of spindle P-FeOOH nanorods, gain the FeS2 nanaorods by controlling the sulfur content, and the products were characterized by XRD, SEM, TG and VSM, and other modern test. The results showed that the sulfuration process of P-FeOOH start from the surface and gradually filled the inside, and we give the possible mechanism of the sulfuration process.5.The surface modification of P-FeOOH has been initially explored in this chapter, we gain P-FeOOH/SiO2 compound by chemical modification methods, and the product was characterized by a series of modern testing methods, and give some prospect of its in-depth study, and make a number of practical experiments for future work.