Regina Monteiro

Citation:

Musat, V. a, E. b Fortunato, A. M. c Botelho do Rego, and R. b Monteiro. "Sol-gel cobalt oxide-silica nanocomposite thin films for gas sensing applications." Thin Solid Films. 516 (2008): 1499-1502.

Abstract:

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]·4H2O 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. © 2007 Elsevier B.V. All rights reserved.

Notes:

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