|
Cuprous oxide is a direct band gap II-VI semiconductor material, the band gap of approximately 2.0-2.2eV. Since cuprous oxide material in the photoelectric conversion properties and photocatalytic performance advantages, it has become the field of materials science and industrial research hotspot. In this thesis the use of simple hydrothermal and solvothermal different morphologies of cuprous oxide micro-nanostructures. Compared with other traditional methods, hydrothermal and solvothermal simple equipment, easy operation, low cost, the morphologies controlled size, etc., it is widely used in synthetic cuprous oxide semiconductor materials. (A) to copper acetate, water, triethanolamine as raw materials by hydrothermal method, successfully synthesized cuprous oxide octahedra. Detailed study of the reaction time, reaction temperature, the ratio of raw materials and surfactants cetyl trimethyl ammonium bromide (CTAB) and other factors on the impact of cuprous oxide product. SEM and XRD analysis of the results, the synthesis of octahedral cuprous oxide optimum conditions: the reaction temperature was 160 ℃, copper acetate 0.2 g, 7.5 ml triethanolamine, and deionized water 15 m1, the reaction time was 70 min.. (2) with copper acetate, triethanolamine and organic alcohol (ethanol, ethylene glycol and glycerol) as raw materials, Solvothermal a different morphologies cuprous oxide micro-nano-particles. Detailed study of the reaction temperature, reaction time, various reducing agents, raw material ratio, surfactant cetyl trimethyl ammonium bromide (CTAB) and hexamethylenetetramine added amount of other experimental conditions on the micro and nano structures cuprous oxide crystal structure and morphology. Using SEM and XRD of the prepared product morphology and crystal structure were characterized. The results showed that the optimum cuprous oxide microspheres prepared by: the reaction temperature was 160 ℃, ethylene glycol 20 ml, copper acetate 0.6 g, triethanolamine 6.5 ml, CTAB was 0.2 g, the reaction time was 70 min., Prepared the morphology of the rules of cuprous oxide microspheres, particle size of about 1-3 microns, good dispersion. Also found that when ethylene glycol and glycerol as the reducing agent, a surfactant is added to 0.1 g CTAB obtained when the cuprous oxide cube. Without added surfactant CTAB conditions, ethylene glycol as a reducing agent and solvent, a surfactant is added hexamethylenetetramine got cuprous oxide hollow nanospheres. In addition, to the experimental results, the micro-and nano structure of the growth mechanism of cuprous oxide and an organic alcohol in the process of formation of the role played discussed.
|