Research On The Synthesis Of Nano-micromaterials In The Ionic Liquids

With the development of modern industry, human's standard of living is rapidly improving. But, In the same time the nature and entironment has been severely destroied . So it is inevitable that more and more attention is paied to"Green Chemistry".Room-temperature ionic liquids (RTILs) have been shown to be viable substitutes for organic solvents both in academia and industry due to their negligible vapor pressure, low melting points, wide range of liquidus temperatures (up to 400℃), low toxicity, nonflammability, large electrochemical window, good solvents for many organic and inorganic materials, and high ionic conductively and thermal stability, are widely application in the organic chemical reactions, separations, and electrochemical.It's an importantand excellent green medium and soft functional materials. In contrast to their successful applications in organic and materials chemistry, the use of RTILs in nanostructres synthesis is still in its infancy,but the excellences have brought more attention of scientist .In this paper, we synthesized five kinds of different RTILs, and then used the RTILs to synthesize various nano-micromaterials. By combining the advantages of both RTILs and microwave heating, we report a fast, seedless, template-free and environmentally benign green route for the production of vairous morphological nanostructures by microwave-assisted heating in RTILs. The RTILs consists of cation and anion. The high ionic conductivity and polarizability of cation make it an excellent microwave absorbing agent, thus leading to a high heating rate and a significantly shorten reaction time. The movement and polarization of ions under the rapidly changing electric field of the microwave result in transient, anisotropic micro-domains for the reaction system, facilitating the anisotropic growth of various nanostructures. We synthesized various morphologies of hydroxid and sulfide, etc. by this method. Then we use RTILs in microwave-assisted solid state reaction to synthesized oxide. In additional, we synthesized mesostructured sulfide and fluorid using ultrasound-assisted and microwave-assisted ionothermal method in different RTILs. The products were characterized by XRD, SEM, TEM, IR,UV-vis,PL, and we investigated the morphology variations of nanostructures with different conditions. and dicussed the possible formation mechanism.