Controlled Synthesis Of Monodispersed Hematite Microcubes And Their Properties

Nanotechnology refers to the arrangement of atoms、molecule on the size of1-100nmin order to synthesize new materials and devices. When the substance is on the size of1-100nm, due to the destruction of the lattice periodicity, many properties of the materialare changed and a lot of new properties different from bulks and atoms appeare, such as thesurface effect, small size effect and macroscopic quantum tunneling. The application ofnanotechnology are very brilliant. The nanotechnology such as nanomaterials、nanomedineand nanoelectronics will bring a huge change to our live.How to synthesize nanomaterials is the basis of nanotechnology. There are a lot ofphysical and chemical methods to synthesis of nanomaterials such as hydrothermal waysmcroemulsion, sol-gel method, chemical vapor deposition and so on. Because of thehydrothermal method possesses a lot of advantage, such as high purity, good dispersion,good crystallinity，low costs and controllable conditions. So we chose the hydrothermalmethod to synthesize our nanomaterial, and we also researched the impact of experimentalconditions to the morphology, structure and composition of products. We also discussed thepossible growth mechanism of the material. Finally we researched the effects morphology,structure and composition of products on their physical and chemical properties by testingtheir magnetic property, gas sensitivity, electrochemical propertyThis is the first time we systematically study the impact of different molar ratio ofprecursors and different volume ratio of solvent to the morphology, structure andcomposition of products. Our results have published on CrystEngComm...