Fabrication and properties of the CuO nanorods prepared

• Main Authors: Shuin-Yu Sun, 孫祥育
• Other Authors: Ching-Hsu Chen
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/20780547274864401595

碩士 === 國立嘉義大學 === 電子物理學系研究所 === 96 === We prepared CuO nanorods by use of two kinds of wet chemical methods. The first method is to mix the NaOH and the Cu(NO3)2 solutions and then to continue their reaction in autoclave. By varying the reactive time, reactive temperature and the pH values of the solutions, we obtained the CuO nanorods with the lengths more than 250 nm and the widths more than 100nm. The second method is to use the solid NaOH throwing into the Cu(NO3)2 solution directly and the CuO nanorods sample is with the lengths less than 150 nm and the widths less than 100nm. The X-ray powder diffraction (XRD) shows that all of the CuO samples has three main crystalline phases of and and . We obtained that when the reactive time and the reactive temperature is decreased, the full-width of half-maximum (FWHM) of the peak is increased. This FWHM also increases with increasing the pH values of the solutions. The morphology from Transmission electron microscope (TEM) shows that the change inclination of the size of nanorods matches with the result of XRD. The Raman spectra show that a smaller sample has narrow bandwidth Raman peak and shifts to higher frequencies, that is opposite to the previous research. The photoluminescense spectra show that the samples of the second method have less defects.