Phase transition process of Cu-doped TiO2 nanoparticles
LIU Ming1,2,3, YAN Ji-kang1,2,3, YANG Gang2, JIANG Gui-min1,2,3, DU Jing-hong1,3, GAN Guo-you1,3, YI Jian-hong1,3
1. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Kunming Metallurgical Research Institute, Kunming 650093, China;
3. Kunming Key Laboratory of Advanced Materials of Precious-Nonferrous Metals, Kunming 650093, China
Abstract：Cu-doped TiO2 nanoparticles were synthesized through sol-gel method.X-ray diffraction(XRD), transmission electron microscopy (TEM), scanning transmission electron microscope (STEM), X-ray photoelectron spectroscopy(XPS) and UV-Vis absorption spectrum(UV-Vis) were used to characterize the phase composition, average grain size, morphology of TiO2 nanoparticles, chemical valence states and the optical absorption property of TiO2 nanoparticles. The results show that Cu doping suppresses the phase transition of TiO2. CuO appears on the surface of TiO2 particles at 650℃, and the doped Cu ions are in the form of Cu+. The light absorption bands of Cu-doped TiO2 are red-shifted markedly. The absorbance of the sample increases with the increase of Cu doping amount, and the UV-Vis absorption band is red shifted with the increase of temperature.
刘明, 严继康, 杨钢, 姜贵民, 杜景红, 甘国友, 易健宏. 铜掺杂纳米二氧化钛颗粒的相变研究[J]. 材料工程, 2019, 47(4): 105-112.
LIU Ming, YAN Ji-kang, YANG Gang, JIANG Gui-min, DU Jing-hong, GAN Guo-you, YI Jian-hong. Phase transition process of Cu-doped TiO2 nanoparticles. Journal of Materials Engineering, 2019, 47(4): 105-112.
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2019, Vol. 47 
