Study of WO3-In2O3 nanocomposites for highly sensitive ENCO and NO2 gas sensors

被引：57
作者：
Haiduk, Yu. S. [1 ]
Khort, A. A. [2 ,3 ]
Lapchuk, N. M. [1 ]
Savitsky, A. A. [1 ]
机构：
[1] Belarusian State Univ, Minsk 220030, BELARUS
[2] Natl Acad Sci Belarus, AV Luikov Heat & Mass Transfer Inst, Minsk 220072, BELARUS
[3] Natl Univ Sci & Technol MISIS, Ctr Funct Nanoceram, Moscow 119049, Russia
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2019年 / 273卷
关键词：
WO3; In2O3; Sol-gel; Semiconductor gas-sensors; CO; NO2; IN2O3; NANOPARTICLES; SENSING PERFORMANCE; THIN-FILMS; WO3; NANOSTRUCTURES; ENHANCEMENT; TEMPERATURE;
D O I：
10.1016/j.jssc.2019.02.023
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Pure semiconductor tungsten oxide (WO3), indium oxide (In2O3) and mixed nanocomposites with different WO3 to In2O3 ratios were successfully synthesized by simple sol-gel method following calcination at 600 degrees C. The morphology, phase composition and features of crustal structure of the materials were studied by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transition electron microscopy and electron paramagnetic resonance spectroscopy. It was found that the nanocomposite materials are characterized by fine crystallinity of 8-38 nm, highly defective crystal cells and presence of delocalized electrons in their structures, which can significantly affect gas sensitivity. The gas sensors based on WO3-In2O3 composite structures exhibited excellent CO and NO2 detecting performance at optimal operating temperature of similar to 240 degrees C and similar to 140 degrees C, respectively.
引用
收藏
页码：25 / 31
页数：7
相关论文
共 36 条
[1]   Metal oxide-based gas sensor research: How to? [J].
Barsan, N. ;
Koziej, D. ;
Weimar, U. .
SENSORS AND ACTUATORS B-CHEMICAL, 2007, 121 (01) :18-35
[2]   Thermodecomposition synthesis of WO3/H2WO4 heterostructures with enhanced visible light photocatalytic properties [J].
Cao, Jing ;
Luo, Bangde ;
Lin, Haili ;
Xu, Benyan ;
Chen, Shifu .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 111 :288-296
[3]   Methane gas-sensing and catalytic oxidation activity of SnO2-In2O3 nanocomposites incorporating TiO2 [J].
Chen Aifan ;
Bai Shouli ;
Shi Bingjie ;
Liu Zhiyong ;
Li Dianqing ;
Chung Chiun Liu .
SENSORS AND ACTUATORS B-CHEMICAL, 2008, 135 (01) :7-12
[4]   Solvent-regulated solvothermal synthesis and morphology-dependent gas-sensing performance of low-dimensional tungsten oxide nanocrystals [J].
Chen, Deliang ;
Ge, Lianfang ;
Yin, Li ;
Shi, Haiyue ;
Yang, Dewei ;
Yang, Jing ;
Zhang, Rui ;
Shao, Guosheng .
SENSORS AND ACTUATORS B-CHEMICAL, 2014, 205 :391-400
[5]   Low-temperature and highly selective NO-sensing performance of WO3 nanoplates decorated with silver nanoparticles [J].
Chen, Deliang ;
Yin, Li ;
Ge, Lianfang ;
Fan, Bingbing ;
Zhang, Rui ;
Sun, Jing ;
Shao, Guosheng .
SENSORS AND ACTUATORS B-CHEMICAL, 2013, 185 :445-455
[6]   The enhanced alcohol-sensing response of ultrathin WO3 nanoplates [J].
Chen, Deliang ;
Hou, Xianxiang ;
Wen, Hejing ;
Wang, Yu ;
Wang, Hailong ;
Li, Xinjian ;
Zhang, Rui ;
Lu, Hongxia ;
Xu, Hongliang ;
Guan, Shaokang ;
Sun, Jing ;
Gao, Lian .
NANOTECHNOLOGY, 2010, 21 (03)
[7]   Semiconductor metal oxide gas sensors: A review [J].
Dey, Ananya .
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2018, 229 :206-217
[8]   Formaldehyde gas sensor based on SnO2/In2O3 hetero-nanofibers by a modified double jets electrospinning process [J].
Du, Haiying ;
Wang, Jing ;
Su, Meiying ;
Yao, Pengjun ;
Zheng, Yangong ;
Yu, Naisen .
SENSORS AND ACTUATORS B-CHEMICAL, 2012, 166 :746-752
[9]   Development of ultra-low-power consumption MOX sensors with ppb-level VOC detection capabilities for emerging applications [J].
Elmi, I. ;
Zampolli, S. ;
Cozzani, E. ;
Mancarella, F. ;
Cardinali, G. C. .
SENSORS AND ACTUATORS B-CHEMICAL, 2008, 135 (01) :342-351
[10]   Metal Oxide Semi-Conductor Gas Sensors in Environmental Monitoring [J].
Fine, George F. ;
Cavanagh, Leon M. ;
Afonja, Ayo ;
Binions, Russell .
SENSORS, 2010, 10 (06) :5469-5502
1234