Sol-gel cobalt oxide-silica nanocomposite thin films for gas sensing applications

被引：19
作者：
Musat, V. [1 ]
Fortunato, E. [2 ]
do Rego, A. M. Botelho [3 ]
Monteiro, R. [2 ]
机构：
[1] Dunarea de Jose Univ Galati, Dept Met & Mat Sci, Galati 800008, Romania
[2] Univ Nova Lisboa, Dept Mat Sci, CENIMAT, Fac Sci & Technol, P-2829516 Caparica, Portugal
[3] Univ Tecn Lisbon, CQFM, Dept Chem & Biol Engn, P-1049001 Lisbon, Portugal
来源：
THIN SOLID FILMS | 2008年 / 516卷 / 07期
关键词：
mesoporous thin films; cobalt oxide; silica-based nanocomposites; sol-gel; gas sensor;
D O I：
10.1016/j.tsf.2007.07.197
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Various metal oxide-silica nanocomposite films have been recently proposed as gas-sensitive materials. This paper presents results on cobalt oxide-SiO2 mesoporous nanocomposite thin films templated by a cationic surfactant. The films were deposited on glass substrate by dip-coating process, using [Co(CH3COO)(2)]center dot 4H(2)O and tetraethoxysilane (TEOS) as starting materials. The effect of withdrawal speed, number of layers and thermal treatment on the crystalline structure, morphology, Co-doping states, optical, electrical and gas sensing properties of the thin films has been investigated using X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, optical transmittance and room temperature photoreduction-oxidation data. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1499 / 1502
页数：4
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