In:
Functional Materials Letters, World Scientific Pub Co Pte Ltd, Vol. 06, No. 03 ( 2013-06), p. 1350035-
Abstract:
In this paper, Ce -doped CdAl layered double hydroxide (LDH) was first synthesized and the derivative CdO/Al 2 O 3 /CeO 2 composite oxide was prepared by calcining Ce -doped CdAl LDH. The structure, morphology and chemical state of the Ce doped CdAl LDH and CdO/Al 2 O 3 /CeO 2 were also investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), solid state nuclear magnetic resonance (SSNMR), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The gas sensing properties of CdO/Al 2 O 3 /CeO 2 to ethanol were further studied and compared with CdO/Al 2 O 3 prepared from CdAl LDH, CeO 2 powder as well as the calcined Ce salt. It turns out that CdO/Al 2 O 3 /CeO 2 sensor shows best performance in ethanol response. Besides, CdO/Al 2 O 3 /CeO 2 possesses short response/recovery time (12/72 s) as well as remarkable selectivity in ethanol sensing, which means composite oxides prepared from LDH are very promising in gas sensing application.
Type of Medium:
Online Resource
ISSN:
1793-6047
,
1793-7213
DOI:
10.1142/S1793604713500355
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2013
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