Nitridation of nanocrystalline TiO2 thin films by treatment with ammonia

被引:14
作者
Romero-Gomez, P. [2 ]
Rico, V. [2 ]
Espinos, J. P. [2 ]
Gonzalez-Elipe, Agustin R. [2 ]
Palgrave, Robert G. [1 ]
Egdell, Russell G. [1 ]
机构
[1] Univ Oxford, Chem Res Lab, Dept Chem, Oxford OX1 3TA, England
[2] Univ Seville, CSIC, Inst Ciencia Mat Sevilla, Seville 41092, Spain
基金
英国工程与自然科学研究理事会;
关键词
Anatase; Titania; Visible spectra; Photoactivity; X-ray photoelectron spectroscopy; ELECTRONIC-STRUCTURE; N INCORPORATION; RAMAN-SPECTRUM; NITROGEN; ANATASE; OXIDATION; TITANIA; SURFACE; PHOTOCATALYSIS; SPECTROSCOPY;
D O I
10.1016/j.tsf.2011.01.267
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nanocrystalline anatase (TiO2) thin films prepared by a physical vapour deposition method were nitrided by annealing in flowing NH3 at temperatures ranging between 650 degrees C and 700 degrees C. It was established that there was a narrow window of temperatures which allowed both incorporation of interstitial nitrogen into the films with retention of the anatase phase without chemical reduction and preservation of the characteristic nanocrystalline morphology. These optimally modified films responded to visible light in photowetting tests and showed the ability to degrade an organic dye under visible light irradiation. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:3587 / 3595
页数:9
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