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：

暂无

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.

引用

页码：1383 / 1388

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