Study Of Synthesise And Structural Control Ofα-fe₂O₃Nanoparticles And Its Catalytic Properties

Nano-Fe2O3has been extensively investigated in catalysis, sensors, optical devices, electrode materials, owing to its special properties. It becomes a research in recent years. Here, the a-Fe2O3with various morphologies has been synthesized by hydrorhermal method and forced hydrolysis. The photocatalytic and electrochemical properties of nano-Fe2O3have also been investigated. The main conclusions are listed as follows.1. By using FeCl3·6H2O and Fe(NO3)3-9H2O as raw materials, sphere, cube, fusiform, polyhedral a-Fe2O3particles were syntheaized. The samples are characterized by UV-Vis and TEM.2. Nano-particals were loaded onto graphene oxide(GO), and the composite materials are characterized by TEM. The result shows that nanoparticals can be loaded onto GO by simple mixing.3. The photocatalytic activity of a-Fe2O3particles for degradation of methylene blue with UV light were investigated. And the performance of photocatalytic activity enhanced by electric field were also investigated. The results prove that smaller nanoparticles have higher catalytic activity, and the electric field can icrease the efficiency of photocatalysis.4. We study the electrochemical performance for formic acid of Fe2O3/GO, Fe2O3/RGO catalytic materials. The results show that Fe2O3/RGO has the best catalytic activity. In addition, we also study the catalytic of Pt-Fe2O3/RGO and find the promotion effect of the on the electrooxidation of formic acid.