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材料工程  2019, Vol. 47 Issue (4): 105-112    DOI: 10.11868/j.issn.1001-4381.2017.001503
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
铜掺杂纳米二氧化钛颗粒的相变研究
刘明1,2,3, 严继康1,2,3, 杨钢2, 姜贵民1,2,3, 杜景红1,3, 甘国友1,3, 易健宏1,3
1. 昆明理工大学 材料科学与工程学院, 昆明 650093;
2. 昆明冶金研究院, 昆明 650093;
3. 昆明市稀贵及有色金属先进材料重点实验室, 昆明 650093
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
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摘要 采用溶胶-凝胶法制备铜掺杂的纳米二氧化钛颗粒。应用X射线衍射(XRD)、透射电子显微镜(TEM)、扫描透射电子显微镜(STEM)、X射线光电子能谱(XPS)和紫外-可见分光光度计(UV-Vis)技术对纳米二氧化钛颗粒的物相组成、平均晶粒尺寸、微观结构、化学态及光吸收性能进行表征。结果表明:Cu掺杂抑制TiO2的相变,在650℃时Cu的氧化物CuO在TiO2颗粒表面出现,掺杂的Cu离子以Cu+的形式存在。掺杂Cu的TiO2光吸收带边显著红移,随着Cu掺杂量的提高,样品光吸收度提高,随着温度的升高,样品紫外-可见光光谱吸收带边红移。
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刘明
严继康
杨钢
姜贵民
杜景红
甘国友
易健宏
关键词 二氧化钛相变掺杂溶胶-凝胶法    
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.
Key wordsTiO2    phase transition    Cu    doping    sol-gel method
收稿日期: 2017-12-05      出版日期: 2019-04-19
中图分类号:  TB34  
  TN304.9  
通讯作者: 严继康(1972-),男,教授,博士,研究方向为二氧化钛光催化,联系地址:云南省昆明市昆明理工大学莲花校区材料科学与工程学院(650093),E-mail:scyjk@sina.com     E-mail: scyjk@sina.com
引用本文:   
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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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.001503      或      http://jme.biam.ac.cn/CN/Y2019/V47/I4/105
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