Electronic and Structural Properties of SnxTi1-xO2 (0.0 ≤ x ≤ 0.1) Solid Solutions

被引：56
|
作者：
Harunsani, M. Hilni [1 ]
Oropeza, Freddy E. [1 ]
Palgrave, Robert G. [1 ]
Egdell, Russell G. [1 ]
机构：
[1] Univ Oxford, Inorgan Chem Lab, Dept Chem, Oxford OX1 3QR, England
来源：
CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
SN-DOPED TIO2; DIFFUSE-REFLECTANCE ANALYSIS; PHOTOCATALYTIC ACTIVITY; THIN-FILMS; TITANIUM-DIOXIDE; PHASE-TRANSFORMATION; SURFACE-PROPERTIES; OPTICAL-PROPERTIES; SENSING PROPERTIES; TIO2-SNO2; SYSTEM;
D O I：
10.1021/cm902970u
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electronic and structural properties of dilute solid solutions of SnO2 in TiO2 have been investigated. Samples of SnxTi1-xO2 with 0.0 <= x <= 0.1 (i.e., 0-10% Sn doping) were prepared by solid state reaction of SnO2 and TiO2 powders at 1200 degrees C followed by rapid quenching. Narrowing of the bandgap at low Sn doping level was observed through both diffuse reflectance spectroscopy and valence band photoemission spectroscopy. This provides an explanation of the visible light photocatalytic activity previously reported for this system. X-ray diffraction showed a positive deviation of the lattice parameters from Vegard's Law, whereas Raman spectra revealed a red-shift in the E-g and B-1g peaks and a blue-shift in the A(1g) peak with increasing Sn content.
引用
收藏
页码：1551 / 1558
页数：8
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