Study On Morphologic Control And Mechanism Of Nano-ZnO And CuO

The new material's preparation and the research are always the fundamental points of the chemical research, with the processing of the technology, the electronic device will be get more and more smaller to closing the nano level, Scientist discovery, the character of the nano materials is different with the corresponding bulk phase material. Nano ZnO and CuO are the good semiconducting material, and their nano structures show great promising applications in opto-electric devices, surface acoustic wave devices, piezoelectricity materials, field emitters, sensors, ultraviolet lasers, solar cells and so on.ZnO and CuO with different morphologies have been prepared via facile hyhro and solvo-thermal methods. PEG-20000 was used as additives, Zn(OH)₄^2- and Zn(NH₃)₄²⁺ were used as reaction precursors, sphere and flower micron ZnO with different monomer by changing quiescent time, impregnant and precipitator. Micrometer ZnO with rugby, screwedcap, hexangular prism, double tower and rose-like morphologies were obtained by changing the ratio of Zn(NO₃)₂ to ethanol via controlling the temperature and reaction time, the article has discussed the formation mechanism of the products.Nano-CuO with sphere-shaped morphology has been attained by hyhro-thermal, and the NaOH and ammonia were used as precipitator. The Cu₂(OH)₃NO₃ and Cu₂O crystal have been obtained by solvo-thermal, different nano-CuO will be produced by baking, the article has discussed the formation mechanism of the products. Our results show that all products obtained with higher intensity and the products show the excellent crystal capability. The factors which influence the shape of the ZnO are mainly precipitator, quiescent time, temperature, impregnant and consistence. The factors which influence the shape of the CuO are mainly precipitator and consistence. PEG-20000 which was used as additives plays the role of nature twines in water and avoids the coalescent of the particles. Because the polarity of ethanol is smaller than the water, so the ethanol provided mild environment in order to synthesizing different configuration of nano particles.