Orthorhombic CaFe2O4: A promising p-type gas sensor

被引：55
作者：
Sutka, Andris [1 ,2 ]
Kodu, Margus [2 ]
Paerna, Rainer [2 ]
Saar, Raando [2 ]
Juhnevica, Inna [1 ]
Jaaniso, Raivo [2 ]
Kisand, Vambola [2 ]
机构：
[1] Riga Tech Univ, Inst Silicate Mat, Paula Valdena 3-7, LV-1048 Riga, Latvia
[2] Univ Tartu, Inst Phys, EE-50411 Tartu, Estonia
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2016年 / 224卷
关键词：
CaFe2O4; Gas sensor; Sol-gel; SENSING PROPERTIES; CUO NANOSHEETS; OXIDE; CONDUCTIVITY; TEMPERATURE; PERFORMANCE; NANOWIRES; SURFACE; AIR;
D O I：
10.1016/j.snb.2015.10.041
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The search for p-type metal oxides with high gas response and stability is an important issue in gas sensor technology. In this work the p-type gas sensing properties of orthorhombic CaFe2O4 are demonstrated for the first time. CaFe2O4 nanopowders were successfully synthesized by the sol-gel auto-combustion method. The formation of orthorhombic CaFe2O4 compound was confirmed by X-ray diffraction, energydispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analyses. The synthesized CaFe2O4 compound showed p-type gas sensing behaviour and high gas response towards ethanol (R-g/R-a =41.5) at a concentration of 100 ppm. Moreover, the CaFe2O4 material tested during the experiments showed good stability. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：260 / 265
页数：6
相关论文
共 36 条
  • [1] Modeling of sensing and transduction for p-type semiconducting metal oxide based gas sensors
    Barsan, N.
    Simion, C.
    Heine, T.
    Pokhrel, S.
    Weimar, U.
    [J]. JOURNAL OF ELECTROCERAMICS, 2010, 25 (01) : 11 - 19
  • [2] Thin-walled NiO tubes functionalized with catalytic Pt for highly selective C2H5OH sensors using electrospun fibers as a sacrificial template
    Cho, Nam Gyu
    Woo, Hyung-Sik
    Lee, Jong-Heun
    Kim, Il-Doo
    [J]. CHEMICAL COMMUNICATIONS, 2011, 47 (40) : 11300 - 11302
  • [3] Gas sensing properties of p-type hollow NiO hemispheres prepared by polymeric colloidal templating method
    Cho, Nam Gyu
    Hwang, In-Sung
    Kim, Ho-Gi
    Lee, Jong-Heun
    Kim, Il-Doo
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2011, 155 (01): : 366 - 371
  • [4] Choi K.-I., 2010, SENSOR ACTUAT B-CHEM, V146, P183
  • [5] Remarkable Improvement of Gas-Sensing Abilities in p-type Oxide Nanowires by Local Modification of the Hole-Accumulation Layer
    Choi, Sun-Woo
    Katoch, Akash
    Kim, Jae-Hun
    Kim, Sang Sub
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (01) : 647 - 652
  • [6] As3+ removal by Ca-Mn-Fe3O4 with and without H2O2: Effects of calcium oxide in Ca-Mn-Fe3O4
    Do, Si-Hyun
    Jo, Young-Hoon
    Park, Joo-Yang
    Hong, Seong-Ho
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2014, 280 : 322 - 330
  • [7] Porous NiO nanosheets self-grown on alumina tube using a novel flash synthesis and their gas sensing properties
    Dong, Chengjun
    Xiao, Xuechun
    Chen, Gang
    Guan, Hongtao
    Wang, Yude
    Djerdj, Igor
    [J]. RSC ADVANCES, 2015, 5 (07): : 4880 - 4885
  • [8] Preparation of NiO nanoparticles in microemulsion and its gas sensing performance
    Du, Yu
    Wang, Weinan
    Li, Xiaowei
    Zhao, Jing
    Ma, Jinming
    Liu, Yinping
    Lu, Geyu
    [J]. MATERIALS LETTERS, 2012, 68 : 168 - 170
  • [9] Chemical synthesis, characterisation and gas sensing performance of copper oxide nanoribbons
    Gou, Xinglong
    Wang, Guoxiu
    Yang, Juan
    Park, Jinsoo
    Wexler, David
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (09) : 965 - 969
  • [10] Fabrication and sensing behavior of Cr2O3 nanofibers via in situ gelation and electrospinning
    Hao, Rui
    Yuan, Jinying
    Peng, Qing
    [J]. CHEMISTRY LETTERS, 2006, 35 (11) : 1248 - 1249
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