Humidity-Independent Gas Sensors Using Pr-Doped In2O3 Macroporous Spheres: Role of Cyclic Pr3+/Pr4+ Redox Reactions in Suppression of Water-Poisoning Effect

Jun Sik Kim; Chan Woong Na; Chang Hoon Kwak; Hua Yao Li; Ji Won Yoon; Jae Hyeok Kim; Seong Yong Jeong; Jong Heun Lee

doi:10.1021/acsami.9b06386

Humidity-Independent Gas Sensors Using Pr-Doped In₂O₃ Macroporous Spheres: Role of Cyclic Pr³⁺/Pr⁴⁺ Redox Reactions in Suppression of Water-Poisoning Effect

Jun Sik Kim, Chan Woong Na, Chang Hoon Kwak, Hua Yao Li, Ji Won Yoon, Jae Hyeok Kim, Seong Yong Jeong, Jong Heun Lee

Department of Materials Science and Engineering

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

98 Citations (Scopus)

Abstract

Pure and 3-12 at. % Pr-doped In₂O₃ macroporous spheres were fabricated by ultrasonic spray pyrolysis and their acetone-sensing characteristics under dry and humid conditions were investigated to design humidity-independent gas sensors. The 12 at. % Pr-doped In₂O₃ sensor exhibited approximately the same acetone responses and sensor resistances at 450 °C regardless of the humidity variation, whereas the pure In₂O₃ exhibited significant deterioration in gas-sensing characteristics upon the change in the atmosphere, from dry to humid (relative humidity: 80%). Moreover, the 12 at. % Pr-doped In₂O₃ sensor exhibited a high response to acetone with negligible cross responses to interfering gases (NH₃, CO, benzene, toluene, NO₂, and H₂) under the highly humid atmosphere. The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-sensing results and discussed in relation with Pr³⁺/Pr⁴⁺ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.

Original language	English
Pages (from-to)	25322-25329
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	11
Issue number	28
DOIs	https://doi.org/10.1021/acsami.9b06386
Publication status	Published - 2019 Jun 24

Bibliographical note

Funding Information:
This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (MSIP) of Korea (NRF-2017K1A3A1A49069947) and the Industrial Strategic Technology Development Program (10073068, Development of Miniaturized 10 mW TVOC/Alcohol Dual Gas Sensor and Module using Non-Silicon AAO Ceramic Substrate) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).

Publisher Copyright:
© 2019 American Chemical Society.

Keywords

cyclic redox reactions
humidity dependence
indium oxide
oxide semiconductor gas sensor
praseodymium

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1021/acsami.9b06386

Cite this

@article{821ece1917954eea848110c0c3f9844a,

title = "Humidity-Independent Gas Sensors Using Pr-Doped In2O3 Macroporous Spheres: Role of Cyclic Pr3+/Pr4+ Redox Reactions in Suppression of Water-Poisoning Effect",

abstract = "Pure and 3-12 at. % Pr-doped In2O3 macroporous spheres were fabricated by ultrasonic spray pyrolysis and their acetone-sensing characteristics under dry and humid conditions were investigated to design humidity-independent gas sensors. The 12 at. % Pr-doped In2O3 sensor exhibited approximately the same acetone responses and sensor resistances at 450 °C regardless of the humidity variation, whereas the pure In2O3 exhibited significant deterioration in gas-sensing characteristics upon the change in the atmosphere, from dry to humid (relative humidity: 80%). Moreover, the 12 at. % Pr-doped In2O3 sensor exhibited a high response to acetone with negligible cross responses to interfering gases (NH3, CO, benzene, toluene, NO2, and H2) under the highly humid atmosphere. The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-sensing results and discussed in relation with Pr3+/Pr4+ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.",

keywords = "cyclic redox reactions, humidity dependence, indium oxide, oxide semiconductor gas sensor, praseodymium",

author = "Kim, {Jun Sik} and Na, {Chan Woong} and Kwak, {Chang Hoon} and Li, {Hua Yao} and Yoon, {Ji Won} and Kim, {Jae Hyeok} and Jeong, {Seong Yong} and Lee, {Jong Heun}",

note = "Funding Information: This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (MSIP) of Korea (NRF-2017K1A3A1A49069947) and the Industrial Strategic Technology Development Program (10073068, Development of Miniaturized 10 mW TVOC/Alcohol Dual Gas Sensor and Module using Non-Silicon AAO Ceramic Substrate) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea). Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = jun,

day = "24",

doi = "10.1021/acsami.9b06386",

language = "English",

volume = "11",

pages = "25322--25329",

journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

number = "28",

}

TY - JOUR

T1 - Humidity-Independent Gas Sensors Using Pr-Doped In2O3 Macroporous Spheres

T2 - Role of Cyclic Pr3+/Pr4+ Redox Reactions in Suppression of Water-Poisoning Effect

AU - Kim, Jun Sik

AU - Na, Chan Woong

AU - Kwak, Chang Hoon

AU - Li, Hua Yao

AU - Yoon, Ji Won

AU - Kim, Jae Hyeok

AU - Jeong, Seong Yong

AU - Lee, Jong Heun

N1 - Funding Information: This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (MSIP) of Korea (NRF-2017K1A3A1A49069947) and the Industrial Strategic Technology Development Program (10073068, Development of Miniaturized 10 mW TVOC/Alcohol Dual Gas Sensor and Module using Non-Silicon AAO Ceramic Substrate) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea). Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/6/24

Y1 - 2019/6/24

N2 - Pure and 3-12 at. % Pr-doped In2O3 macroporous spheres were fabricated by ultrasonic spray pyrolysis and their acetone-sensing characteristics under dry and humid conditions were investigated to design humidity-independent gas sensors. The 12 at. % Pr-doped In2O3 sensor exhibited approximately the same acetone responses and sensor resistances at 450 °C regardless of the humidity variation, whereas the pure In2O3 exhibited significant deterioration in gas-sensing characteristics upon the change in the atmosphere, from dry to humid (relative humidity: 80%). Moreover, the 12 at. % Pr-doped In2O3 sensor exhibited a high response to acetone with negligible cross responses to interfering gases (NH3, CO, benzene, toluene, NO2, and H2) under the highly humid atmosphere. The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-sensing results and discussed in relation with Pr3+/Pr4+ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.

AB - Pure and 3-12 at. % Pr-doped In2O3 macroporous spheres were fabricated by ultrasonic spray pyrolysis and their acetone-sensing characteristics under dry and humid conditions were investigated to design humidity-independent gas sensors. The 12 at. % Pr-doped In2O3 sensor exhibited approximately the same acetone responses and sensor resistances at 450 °C regardless of the humidity variation, whereas the pure In2O3 exhibited significant deterioration in gas-sensing characteristics upon the change in the atmosphere, from dry to humid (relative humidity: 80%). Moreover, the 12 at. % Pr-doped In2O3 sensor exhibited a high response to acetone with negligible cross responses to interfering gases (NH3, CO, benzene, toluene, NO2, and H2) under the highly humid atmosphere. The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-sensing results and discussed in relation with Pr3+/Pr4+ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.

KW - cyclic redox reactions

KW - humidity dependence

KW - indium oxide

KW - oxide semiconductor gas sensor

KW - praseodymium

UR - http://www.scopus.com/inward/record.url?scp=85070024354&partnerID=8YFLogxK

U2 - 10.1021/acsami.9b06386

DO - 10.1021/acsami.9b06386

M3 - Article

C2 - 31268653

AN - SCOPUS:85070024354

SN - 1944-8244

VL - 11

SP - 25322

EP - 25329

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 28

ER -