Formaldehyde-sensing properties of LaFeO3 particles synthesized by citrate sol-gel method

被引：43

作者：

Zhang, Yong ^{[1
]}

Jiang, Bin ^{[1
]}

Yuan, Mengjiao ^{[1
]}

Li, Peiwen ^{[1
]}

Li, Wei ^{[1
]}

Zheng, Xuejun ^{[2
]}

机构：

[1] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Sch Mech Engn, Xiangtan 411105, Peoples R China

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2016年 / 79卷 / 01期

关键词：

LaFeO3; particles; Citrate sol-gel method; Formaldehyde gas sensor; Low operating temperature; WOOD-BASED PANELS; NO2 GAS SENSOR; THIN-FILMS; ELECTRICAL-CONDUCTIVITY; LANTHANUM FERRITE; POROUS LAFEO3; DOPED ZNO; SENSITIVITY; SURFACE; NANOPARTICLES;

D O I：

10.1007/s10971-016-4025-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LaFeO3 (LFO) particles were synthesized by citrate sol-gel method and characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and specific surface and pore size analysis instrument. To investigate the formaldehyde (HCHO)-sensing properties, the side-heating gas sensor based on LFO particles was fabricated. The LFO particle-based gas sensor presented high response and good selectivity to HCHO at an operating temperature of 100 degrees C. At the range of 1-50 ppm HCHO, the LFO particle-based gas sensor exhibits a nearly linear response, and the linear correlation coefficient is 0.99. The response time and recovery time are about 33 and 27 s, respectively. The results indicate that LFO particles synthesized by citrate sol-gel method have potential applications for fabricating high-performance and low power consumption HCHO gas sensor.

引用

页码：167 / 175

页数：9

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