Synthesis, Characterization, And Properties Of Cadmium Related Nanomaterials

To obtain uniform and controllable naonoscale materials with good performance is an important content in materials research. At the same time, to explore new method of synthesis of nano-material and new concept has important theoretical and practical significance.Low-dimensional nanostructures have been the focus of extensive studies worldwide for their unique applications in physics and fabrication of nanoscale devices. It is very important to explore a new synthesis method of Cadmium related materials. Cadmium provides a very attractive model system for studying low-dimensional physical phenomena owing to the long mean free path and high carrier mobility and is widely concerned by many research teams.In this dissertation, the synthesis of Cadmium sulfide branched nanowires and nanonetworks and low-dimensional nanosturctures of Cadmium-related materials, such as Cadmium nanoplates has been explored. A newly relatively low-temperature synthetic route has been presented for the synthesis of metallic Cadmium branched nanowires and a controlled Chemical Vapor Deposition method has been demonstrated for the synthesis of Cadmium-related low-dimensional nanostructures. And, magnetism effect of Cadmium, Cadmium sulfide, and so forth, has been reported. It is the basic unit of nanoelectronic devices and significant in the electronic, thermal, optical and energy applications.In this dissertation, we create a series of different morphology of nano-structure combined with chemical physics properties by use of the advantages of thermal evaporation and Chemical Vapor Deposition, study the mechanism of synthesis nanoplates in-depth, and reveals the chemical vapor synthesis process in preparation of nanometer structure. Sulphur dioxide, Carbon monoxide and Ammonia is the most common reducing gas in oxidation-reducing reaction conditions. However, we apply these active gas as “morphology catalyst” in control of the nanoscale morphology of Cadmium and Cadmium related nanostructures. Finally, the experimental results were analyzed by the first principles calculations.