Selective Synthesis Of Molybdate Functional Materials And Preparation Of New Carbon Materials

In this dissertation, hydrothermal process has been successfully developed to synthesis of nano-rods, nano-wires and three-dimensional (3D) materials. Particularly, progress has been achieved on the synthes is of 3D nano-structure materials. Novel micro-scale iron molybdate has been obtained via hydrothermal approach. Uniformly carbon spheres can be obtained by hydrothermal process in the presence of the H₃PO₄ and rice husk is raw mateial. This method possibly will have the better economic efficiency and also has a bigger profit to the environmental protection.1 . Novel structure iron molybdate can be synthesized by a hydrothermal approach. The microstructure and phasecan be controlled through adjusting the react conditions such as tempertaure and pH value. This research synthesizes the pure phase traditional catalyst, iron molybdate.And the magnetic property of different phase iron molybdate is observed. The magnetic property of monoclinic and orthorhombic Fe₂(MoO₄)₃ complex spheres displays ferrimagnetic and antiferromagnetic performance respectively. The novel nanometer structure and quite relative bigger surface will have the quite vital signification on the catalyzed domain.2. A series of molybdates can be synthesized by a hydrothermal approach. The microstructure, phase can be controlled, through adjusting the react conditions. At the same time, througu the thorough research,friendly PEG400 is added, the phase and the morphology has beenchanged greatly. Magnetism and the electrochemical performances of aseries of functions metal molybdate nanometer material have beendiscussed. Their electrochemical performances are excellent,a-NiMoO₄,β-CoMoO₄ and a-MnMoO₄ delivered the first dischargespecific capacity of 850 mAh g^-1, 130 mAh g^-1 and 180 mAh g^-1,respectively. The photocatalytic activity of metal molybdate particles withdifferent morphologies has been tested by the degradation of acidfuchsine under visible light and open up the metal molybdate catalyzedperformance research. this facile route to synthesize molybdatesnanocrystals at large scale is very significative for further investigation onthe optical, electric and magnetic properties of molybdates nanomaterials.3. Uniformly carbon spheres can be obtained by hydrothermalprocess in the presence of the H3PO4 and rice husk is raw mateial. It hasbeen successfully developed the new way obtained carbon. Carbonizedproducts is separated, further process is developed, industry materimalSiO₂ is obtained by hydrothermal process in the presence of the HNO3and the nitric acid is the oxidant , the remanent is raw mateial. Thisprocessing rice husk's method to enhances the economic efficiency andthe environmental protection has the very significant practicalsignificance.