期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 156, 期 -, 页码 145-152出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2012.02.010
关键词
Mesoporous titanium dioxide; Visible light activity; Ytterbium; Nitrogen; Co-doped
类别
资金
- National Nature Science Foundation of China [20977030, 21173077]
- National Basic Research Program of China (973 Program) [2010CB732306]
- Ministry of Science and Technology of China [2011DFA50530]
- Science and Technology Commission of Shanghai Municipality [10520709900, 10JC1403900]
- Fundamental Research Funds for the Central Universities
Well-ordered mesoporous TiO2 co-doped with nitrogen and ytterbium was successfully synthesized by an evaporation-induced self-assembly process. The as-prepared and calcined mesoporous TiO2 materials were characterized by X-ray diffraction, transmission electron microscope, UV-vis absorbance spectroscopy, X-ray photoelectron spectroscopy, fourier transform infrared and N-2 adsorption-desorption measurements. After calcinations at 350 degrees C. the TiO2 co-doped with nitrogen and 3% ytterbium had the highest surface area (219 m(2) g(-1)) and retained ordered structures. Under visible light irradiation, 75% of 20 mg/L phenol solution was degraded after 10 h and 10 mg/L rhodamine B (RhB) was decomposed completely after 4 h. The significant enhancement in the photocatalytic activity of the modified TiO2 is attributed to the synergistic effect of N and Yb. The N dopant extended the absorption to visible region and the Yb dopant was beneficial in stabilizing the mesoporous structure and restraining the recombination of photogenerated holes and electrons. (C) 2012 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据