Preparation and ethanol sensitivity of nanocrystalline La0.7Pb0.3FeO3-based gas sensor

被引：23

作者：

Song, P ^{[1
]}

Hu, JF ^{[1
]}

Qin, HW ^{[1
]}

Zhang, L ^{[1
]}

An, K ^{[1
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Dept Phys & Microelect, Jinan 250100, Peoples R China

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 21期

基金：

中国国家自然科学基金;

关键词：

citric method; gas-sensing; perovskite; conductivity property;

D O I：

10.1016/j.matlet.2004.03.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports that nano-La0.7Pb0.3FeO3 powders can be used as a new type of gas-sensing material for detecting ethanol gas. La0.7Pb0.3FeO3 powders were prepared by the citric method. The powders were characterized by X-ray diffraction (XRD), and XRD pattern showed that La0.7Pb0.3FeO3 was still perovskite phase with orthorhombic structure and its crystallite size is about 17 nm. The conductivity and gas sensitivity of La0.7Rb0.3FeO3-based sensor were investigated. The sensor exhibited high sensitivity and good selectivity towards ethanol gas. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：2610 / 2613

页数：4

共 14 条

[1] USE OF COMPLEX IMPEDANCE SPECTROSCOPY IN CHEMICAL SENSOR CHARACTERIZATION [J].

GUTIERREZ, J ;

ARES, L ;

HORILLO, MC ;

SAYAGO, I ;

AGAPITO, J ;

LOPEZ, L .

SENSORS AND ACTUATORS B-CHEMICAL, 1991, 4 (3-4) :359-363

[2] Gas-sensing property and mechanism of CaxLa1-xFeO3 ceramics [J].

Kong, LB ;

Shen, YS .

SENSORS AND ACTUATORS B-CHEMICAL, 1996, 30 (03) :217-221

[3] Preparation and characterization of nanocrystalline alpha-Fe2O3 by a sol-gel process [J].

Liu, XQ ;

Tao, SW ;

Shen, YS .

SENSORS AND ACTUATORS B-CHEMICAL, 1997, 40 (2-3) :161-165

[4] THERMODYNAMIC QUANTITIES AND DEFECT EQUILIBRIUM IN THE PEROVSKITE-TYPE OXIDE SOLID-SOLUTION LA1-XSRXFEO3-DELTA [J].

MIZUSAKI, J ;

YOSHIHIRO, M ;

YAMAUCHI, S ;

FUEKI, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1987, 67 (01) :1-8

[5] NONSTOICHIOMETRY AND DEFECT STRUCTURE OF THE PEROVSKITE-TYPE OXIDES LA1-XSRXFEO3-DELTA [J].

MIZUSAKI, J ;

YOSHIHIRO, M ;

YAMAUCHI, S ;

FUEKI, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1985, 58 (02) :257-266

[6] SEMICONDUCTOR GAS SENSORS [J].

MORRISON, SR .

SENSORS AND ACTUATORS, 1982, 2 (04) :329-341

[7]

NITTA M, 1980, J ELECT MAT, V9, P89

[8] Influence of Sr content on the ethanol sensitivity of nanocrystalline La1-xSrxFeO3 [J].

Suo, H ;

Wang, J ;

Wu, FQ ;

Liu, GF ;

Xu, BK ;

Zhao, MY .

JOURNAL OF SOLID STATE CHEMISTRY, 1997, 130 (01) :152-153

[9]

TEJUCA LG, 1985, J MATER SCI, V20, P1207

[10]

WARREN BE, 1980, XRAY DIFFRACTION, P253

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