Analysis of chemical states of Ce-doped TiO2

被引：0
|
作者：
Rong, Xue-Quan [1 ]
Yan, Ji-Kang [1 ,2 ,3 ,4 ]
Yi, Jian-Hong [1 ,2 ,3 ,4 ]
Du, Jing-Hong [1 ,2 ,3 ,4 ]
Kang, Kun-Yong [1 ]
Gan, Guo-You [1 ,2 ,3 ,4 ]
机构：
[1] Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, China
[2] Key Laboratory of Advanced Materials of Precious-Nonferrous Metals, Ministry of Education, Kunming University of Science and Technology, Kunming, China
[3] Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
[4] Kunming Key Laboratory of Advanced Materials of Precious-Nonferrous Metals, Kunming University of Science and Technology, Kunming, China
来源：
Rengong Jingti Xuebao/Journal of Synthetic Crystals | 2015年 / 44卷 / 05期
关键词：
Binding energy - Cerium - Sol-gels - Oxygen - Powders - Doping (additives) - High resolution transmission electron microscopy - Light - Sol-gel process - Chemical analysis - Grain growth - Phase transitions;
D O I：
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中图分类号：
学科分类号：
摘要：
Titania powders and 5mol% Ce-doped TiO2 powders were synthesized by sol-gel method. The influence of Ce dopant on the phase transformation temperature, phase compositions, chemical states and the visible light absorbable range of titania were investigated by X-ray diffractometer (XRD), transmission electron microscopy (TEM) and UV-Vis spectrophotometer (UV-Vis). The results show that Ce dopant inhibits the phase transformation and grain growth of titania. As the heat treatment temperature of Ce-doped titania increases, lattice oxygen peak is enhanced, while absorption oxygen peak is reduced. Meanwhile, Ti2p3/2 binding energy is decreased, and Ce3+ was gradually oxidized to Ce4+. In addition, the Ce-doped increases the visible light absorbable range of titania. ©, 2015, Chinese Ceramic Society. All right reserved.
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页码：1383 / 1388
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