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SnO2/MoO3-nanostructure and alcohol detection

被引：41
作者：
Arbiol, J.
Morante, J. R.
Bouvier, P.
Pagnier, T.
Makeeva, E. A.
Rumyantseva, M. N.
Gaskov, A. M.
机构：
[1] Univ Barcelona, TEM, MAT, SCT, E-08028 Barcelona, Spain
[2] Univ Barcelona, EME, Dept Elect, E-08028 Barcelona, Spain
[3] LEPMI, ENSEEG, F-38402 St Martin Dheres, France
[4] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 118卷 / 1-2期
关键词：
SnO2/MoO3; semiconductor gas sensor; nanometal oxide binary systems; surface acidity; HRTEM; EELS; Raman;
D O I：
10.1016/j.snb.2006.04.021
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
SnO2/MOO3 mixed samples from 0 to 100 Mol% MoO3 have been prepared by using the sol-gel method and calcined at 500 degrees C during 24h. The sensor response of the samples towards alcohols, CnH2n+1OH (n = 1-4), and NH3 will be interpreted in terms of the acid-base properties of the nanocomposites. To support it, a detailed high-resolution transmission electron microscopy, electron energy loss spectroscopy and RAMAN analysis have been performed allowing to determine the structural, morphological and compositional evolution of this nanostructured binary system. The change on the sensing characteristics related with the Mo content on samples is explained attending to these analytical characterization results that point out the presence Of Mo2O3 in the very small grain of SnO2, about 2.5 nm, before their segregation in determining the sensing characteristics. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：156 / 162
页数：7
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