(Ti, Sn)O2 binary solid solutions for gas sensing:: Spectroscopic, optical and transport properties

被引：38

作者：

Carotta, M. C. ^{[1
]}

Gherardi, S. ^{[1
]}

Guidi, V. ^{[1
]}

Malagu, C. ^{[1
]}

Martinelli, G. ^{[1
]}

Vendemiati, B. ^{[1
]}

Sacerdoti, M. ^{[2
]}

Ghiotti, G. ^{[3
]}

Morandi, S. ^{[3
]}

Bismuto, A. ^{[4
,5
]}

Maddalena, P. ^{[4
,5
]}

Setaro, A. ^{[4
,5
]}

机构：

[1] Univ Ferrara, CNR, INFM, Dipartimento Fis, I-44100 Ferrara, Italy

[2] Univ Ferrara, Dipartimento Sci Terra, I-44100 Ferrara, Italy

[3] Univ Turin, Dipartimento Chim, IFM, I-10125 Turin, Italy

[4] Univ Naples Federico 2, CNR, INFM Coherentia, I-80126 Naples, Italy

[5] Univ Naples Federico 2, CNR, Dipartimento Sci Fis, I-80126 Naples, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 130卷 / 01期

关键词：

nanomaterials; semiconductor oxides; solid solutions; gas sensors;

D O I：

10.1016/j.snb.2007.07.112

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Novel TixSn1-xO2 (0.3 < x < 0.9) nanostructured oxides for gas sensing, have been synthesized and characterized through a great variety of investigation techniques, such as electron microscopy, X-ray diffraction, specific surface area measurements, UV-vis and IR spectroscopies, photoluminescence emission spectra and finally electrical measurements. All structural investigations showed solid solutions of the two single oxides; only the oxide with x = 0.7 showed a beginning of spinodal decomposition revealed by XRD. Surprisingly, the samples with x = 0.3 and 0.5 exhibited carbon monoxide response much higher than for pure SnO2. Investigations on this point, performed through spectroscopic measurements in the presence of CO, suggest a different behaviour of the solid solutions from the single oxides. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：38 / 45

页数：8

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