Abstract
We synthesize copper/zinc oxide heterostructures (Cu/ZnO) by thermal decomposition methods and separate the nucleation and growth process by hot injection method, and then obtaining the nanoparticles with the almost same size. We work on the influence of different reaction temperature and the type of injection. By controlling both of the factors, we can synthesize highly crystalline heterostructures with copper nanoparticles of forty nanometers and the zinc oxide shell of the thickness of four nanometers. We transfer Cu/ZnO into water phase, and alloy to the photocatalttic reaction. We are based on the done work of the synthesis of gold/cadmium selenide heterostructures, analyzing further the shell structure. We use cadmium nitrate and sodium borohydride to control the CdSe shell thickness, and analyze the absorption values and measure the photoluminescence signal. In addition we measure two-photon luminescence imaging as well as the photocatalytic reaction. We use TOP and oleylamine to reduce copper chloride at high temperature. By tuning the concentration of copper chloride and the reaction time to prepare copper nanocrystals with morphology evolution.We observe X-ray diffraction patterns to analyze the crystalline structure, and observe absorption values to determine optical properties. Analyzing SEM images and TEM images to Analyze the surface morphology and the rationality of its evolution.