Cotrolled Synthesis Of Low Dimension Namomaterials Via Hydrothermal Or Solvothermal Routes

The preparation and characterization of the inorganic nanomaterials are an important step for studying nanomaterials. So, this dissertation focuses on studying the inorganic materials from this step. In our paper, we designed some new reaction routes to prepare the nanomaterials, and we have successfully achieved the preparation of vanadium oxides and metal chalcogenides nanomaterials by hydrothermal and solvothermal methods. Meanwhile, we have carried out a series of controlled experiments, and characterized the production by various testing methods. The summary of the content for this paper is as follows:1. Synthesis of the vanadium oxide nanostructures by hydrothermal methods: we have realized the transformation from V2O5 solid state power to V2O5 nanobelts by surfactant-assisted hydrothermal methods; and uniform VOx nanodisks have also been obtained by adding small amount of Na2S2O3 reduction processor based on above experiment. We discussed the growth process and reaction mechanism of nanostructures by changing different reaction parameters, such as reaction time, temperature, reactant concentration, and so on.2. Synthesis of the metal chalcogenide nanostructures by solvothermal methods: we have successfully prepared various metal chalcogenide nanomaterials. First, novel Sb2Te3 nanoforks have been synthesized by using glycol as solvent at 150°C; second, we achieved the Se solid state power transformation and CdSe hollow nanospheres and ZnSe solid nanospheres in benzyl glycol at 150°C by using animo acid as ligand. Finally, the corresponding reaction mechanism was proposed based on the results of a series of controllable experiments.3. Synthesis of Te nanowires by solvothermal methods: Te nanowires aggregated from nanoparticles have been successfully synthesized via a simple PVP-assisted solvothermal route. We investigated the solid state tranformation reaction process by adjusting the various effect factors.