Morphology Control Of Fe₂O₃Nanocrystalline And Catalytic Combustion Of Methane And Co On Fe₂O₃Nanocomposite

In this thesis we reviewed the morphology control of Fe2O3nanocrystalline and the latest progress of composite oxide nanomaterials. A series of Fe2O3nanocrystallines with different morphologies, and their nanocomposites were synthesized by a hydrothermal method. The study was focused on their morphology control, characterization and applications in CH4and CO catalytic combustion. The main results were summarized as follows:1. Preparation of Fe2O3nanocrystallines with various shapesFe2O3nanocrystallines with special morphologies have been prepared by a facile hydrothermal method. By controlling these reaction conditions such as reaction temperature, pH value of solution, and reaction time, we successfully obtained Fe2O3nanobelts, nanorods, nanoparticles, nanocubes and nano-polyhedra. A few interesting properties will appear depending on the morphologies. 2. Preparation and catalytic properties of Fe2O3nano-compositesA series of Co doping Fe2O3nanocomposites with different morphologies have been synthesized, and their catalytic properties for CH4and CO combustion have been investigated, and catalytic properties of the nanocomposites prepared from cobalt chloride and cobalt nitrate raw materials have been compared. In addition, CO3O4and Pd loaded Fe2O3nanocomposites have been studied, too.