Highly sensitive and selective ethanol sensors using magnesium doped indium oxide hollow spheres

Young Moo Jo; Chul Soon Lee; Rui Wang; Joon Shik Park; Jong Heun Lee

doi:10.4191/kcers.2017.54.4.01

Highly sensitive and selective ethanol sensors using magnesium doped indium oxide hollow spheres

Young Moo Jo, Chul Soon Lee, Rui Wang, Joon Shik Park, Jong Heun Lee

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Pure In₂O₃, 0.5 and 1.0 wt% Mg doped In₂O₃ hollow spheres were synthesized by ultrasonic spray pyrolysis of a solution containing In-, Mg-nitrate and sucrose and their gas sensing characteristics to 5 ppm C₂H₅OH, p-xylene, toluene, and HCHO were measured at 250, 300 and 350^oC. Although the addition of Mg decreases the specific surface area and the volume of meso-pores, the gas response (resistance ratio) of the 0.5 wt% Mg doped In₂O₃ hollow spheres to 5 ppm C₂H₅OH at 350^oC (69.4) was significantly higher than that of the pure In₂O₃ hollow spheres (24.4). In addition, the Mg doped In₂O₃ hollow spheres showed the highest selectivity to C₂H₅OH. This was attributed to the dehydrogenation of C₂H₅OH assisted by basic MgO into reactive CH₃CHO and H₂.

Original language	English
Pages (from-to)	303-307
Number of pages	5
Journal	Journal of the Korean Ceramic Society
Volume	54
Issue number	4
DOIs	https://doi.org/10.4191/kcers.2017.54.4.01
Publication status	Published - 2017 Jul

Keywords

Electrical properties
Gas sensor
Indium oxide
Magnesium
Sensors

ASJC Scopus subject areas

Ceramics and Composites

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10.4191/kcers.2017.54.4.01

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@article{797f0b301479462a900c7e0fd478bdf2,

title = "Highly sensitive and selective ethanol sensors using magnesium doped indium oxide hollow spheres",

abstract = "Pure In2O3, 0.5 and 1.0 wt% Mg doped In2O3 hollow spheres were synthesized by ultrasonic spray pyrolysis of a solution containing In-, Mg-nitrate and sucrose and their gas sensing characteristics to 5 ppm C2H5OH, p-xylene, toluene, and HCHO were measured at 250, 300 and 350oC. Although the addition of Mg decreases the specific surface area and the volume of meso-pores, the gas response (resistance ratio) of the 0.5 wt% Mg doped In2O3 hollow spheres to 5 ppm C2H5OH at 350oC (69.4) was significantly higher than that of the pure In2O3 hollow spheres (24.4). In addition, the Mg doped In2O3 hollow spheres showed the highest selectivity to C2H5OH. This was attributed to the dehydrogenation of C2H5OH assisted by basic MgO into reactive CH3CHO and H2.",

keywords = "Electrical properties, Gas sensor, Indium oxide, Magnesium, Sensors",

author = "Jo, {Young Moo} and Lee, {Chul Soon} and Rui Wang and Park, {Joon Shik} and Lee, {Jong Heun}",

note = "Funding Information: This work is supported by the “S/W Converged Components Technology Development Program” (project No. 10043800) by KEIT and MOTIE in the Korea and Brain Pool Program (No. 161S-2-3-1544), through the Korean Federation of Science and Technology Societies (KOFST), funded by the Ministry of Science, ICT and Future Planning.",

year = "2017",

month = jul,

doi = "10.4191/kcers.2017.54.4.01",

language = "English",

volume = "54",

pages = "303--307",

journal = "Journal of the Korean Ceramic Society",

issn = "1229-7801",

publisher = "Korean Ceramic Society",

number = "4",

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TY - JOUR

T1 - Highly sensitive and selective ethanol sensors using magnesium doped indium oxide hollow spheres

AU - Jo, Young Moo

AU - Lee, Chul Soon

AU - Wang, Rui

AU - Park, Joon Shik

AU - Lee, Jong Heun

N1 - Funding Information: This work is supported by the “S/W Converged Components Technology Development Program” (project No. 10043800) by KEIT and MOTIE in the Korea and Brain Pool Program (No. 161S-2-3-1544), through the Korean Federation of Science and Technology Societies (KOFST), funded by the Ministry of Science, ICT and Future Planning.

PY - 2017/7

Y1 - 2017/7

N2 - Pure In2O3, 0.5 and 1.0 wt% Mg doped In2O3 hollow spheres were synthesized by ultrasonic spray pyrolysis of a solution containing In-, Mg-nitrate and sucrose and their gas sensing characteristics to 5 ppm C2H5OH, p-xylene, toluene, and HCHO were measured at 250, 300 and 350oC. Although the addition of Mg decreases the specific surface area and the volume of meso-pores, the gas response (resistance ratio) of the 0.5 wt% Mg doped In2O3 hollow spheres to 5 ppm C2H5OH at 350oC (69.4) was significantly higher than that of the pure In2O3 hollow spheres (24.4). In addition, the Mg doped In2O3 hollow spheres showed the highest selectivity to C2H5OH. This was attributed to the dehydrogenation of C2H5OH assisted by basic MgO into reactive CH3CHO and H2.

AB - Pure In2O3, 0.5 and 1.0 wt% Mg doped In2O3 hollow spheres were synthesized by ultrasonic spray pyrolysis of a solution containing In-, Mg-nitrate and sucrose and their gas sensing characteristics to 5 ppm C2H5OH, p-xylene, toluene, and HCHO were measured at 250, 300 and 350oC. Although the addition of Mg decreases the specific surface area and the volume of meso-pores, the gas response (resistance ratio) of the 0.5 wt% Mg doped In2O3 hollow spheres to 5 ppm C2H5OH at 350oC (69.4) was significantly higher than that of the pure In2O3 hollow spheres (24.4). In addition, the Mg doped In2O3 hollow spheres showed the highest selectivity to C2H5OH. This was attributed to the dehydrogenation of C2H5OH assisted by basic MgO into reactive CH3CHO and H2.

KW - Electrical properties

KW - Gas sensor

KW - Indium oxide

KW - Magnesium

KW - Sensors

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U2 - 10.4191/kcers.2017.54.4.01

DO - 10.4191/kcers.2017.54.4.01

M3 - Article

AN - SCOPUS:85037042585

SN - 1229-7801

VL - 54

SP - 303

EP - 307

JO - Journal of the Korean Ceramic Society

JF - Journal of the Korean Ceramic Society

IS - 4

ER -

Highly sensitive and selective ethanol sensors using magnesium doped indium oxide hollow spheres

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