Biosynthesis And Characterization Of Mesoporous Iron Phosphate And Iron Oxide

H. Gleite firstly obtained metal nano-materials in 1984 and scientists in Mobil Corporation firstly synthesized ordered mesoporous materials in 1992, which have attracted wide attention on nano-materials and mesoporous materials. In recent years, many nano or mesoporous materials with the new structure have been synthesized, and the obtained materials have some special physical and chemical properties, such as light, electric, magnetic and catalytic.In the graduation thesis, we introduce briefly the definition, properties and research status about nano-mesoporous materials at home and abroad. In this study, we using microbial cells and biosurfactant as templates synthesized nano- and mesoporous ferric phosphate and oxides with different morphologies. The mechanism of biomineralization was explored simply. The main theses of the job were listed below:1. Microbiological synthesis of nano- and mesoporous iron phosphate with various morphologies. With micro-organisms as a template, using different synthesis conditions (phosphorus source, iron source, template volume, mineralization time, concentration, etc.), we have synthesized iron phosphate with different morphologies, including nanoparticles, lamellar and mesoporous structure. We also studied their corresponding performances and applications in battery materials.2. Synthesis of LiFePO4/C battery materials with high surface area using microorganism as a template and cementation agent. In this paper, using microorganism as a template and carbon source, we have synthesized LiFePO4/C nanoparticles by microwave and carbothermal reduction method and studied their electrochemical properties.3. Synthesis and characterization of mesoporous hybrid iron oxide nanomaterials with microorganism as a template. The obtained mesoporous hybrid Fe2O3 has a high photocatalytic property. The obtained Fe3O4 has a relatively high magnetic property.4. Synthesis and characterization of silver nanoparticle with biosurfactant (TP).5. Simple and rapid synthesis of Fe(PO3)3 by microwave sinteringThe experimental test results show that yeast cells as a high-efficient can easily obtain iron phosphate and iron oxide with mesoporous structure. The synthesis technology here has many merits, such as mind reaction condtions, non-toxic, low energy consumption and easy industrialized. The obtained mesoporous materias possess good adsorption properties, electrochemical performance,photocatalytic activity,saturation magnetization property, which have important applications in the fields of life sciences, medicine, energy resources and environmental protection.