Gas sensing properties of columnar CeO2 nanostructures prepared by Chemical vapor deposition

被引：27

作者：

Barreca, Davide ^{[1
,2
]}

Comini, Elisabetta ^{[3
]}

Gasparotto, Alberto ^{[1
]}

Maccato, Chiara ^{[1
]}

Maragno, Cinzia ^{[1
]}

Sberveglieri, Giorgio ^{[3
]}

Tondello, Eugenio ^{[1
]}

机构：

[1] Univ Padua, Dept Chem, INSTM, I-35131 Padua, Italy

[2] CNR, ISTM, I-35131 Padua, Italy

[3] Univ Brescia, SENSOR, INFM, CNR, I-25133 Brescia, Italy

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2008年 / 8卷 / 02期

关键词：

columnar CeO2 nanostructures; chemical vapor deposition; gas sensors;

D O I：

10.1166/jnn.2008.080

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Columnar CeO2 nanostructures are grown on alumina substrates by a template- and catalyst-free Chemical Vapor Deposition (CVD) approach and subsequently tested as resistive gas sensors of CH3COCH3, H-2, NO2. The sensor response is stable and reproducible throughout the whole working temperature range (200-500 degrees C) and directly dependent on the analyte gas and the adopted operating conditions. The higher sensitivity with respect to that displayed by continuous CeO2 thin films demonstrates the potential of fabricating nanostructured sensing devices characterized by improved functional performances.

引用

页码：1012 / 1016

页数：5

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