Selective Detection of Nitrogen-Containing Compound Gases

Ran Yoo, Hyun Sook Lee, Wonkyung Kim, Yunji Park, Aran Koo, Sang Hyun Jin, Thang Viet Pham, Myung Jong Kim, Sunglyul Maeng, Wooyoung Lee

Research output: Contribution to journalArticle

Abstract

N-containing gaseous compounds, such as trimethylamine (TMA), triethylamine (TEA), ammonia (NH3), nitrogen monoxide (NO), and nitrogen dioxide (NO2) exude irritating odors and are harmful to the human respiratory system at high concentrations. In this study, we investigated the sensing responses of five sensor materials-Al-doped ZnO (AZO) nanoparticles (NPs), Pt-loaded AZO NPs, a Pt-loaded WO3 (Pt-WO3) thin film, an Au-loaded WO3 (Au-WO3) thin film, and N-doped graphene-to the five aforementioned gases at a concentration of 10 parts per million (ppm). The ZnO- and WO3-based materials exhibited n-type semiconducting behavior, and their responses to tertiary amines were significantly higher than those of nitric oxides. The N-doped graphene exhibited p-type semiconducting behavior and responded only to nitric oxides. The Au- and Pt-WO3 thin films exhibited extremely high responses of approximately 100,000 for 10 ppm of triethylamine (TEA) and approximately -2700 for 10 ppm of NO2, respectively. These sensing responses are superior to those of previously reported sensors based on semiconducting metal oxides. On the basis of the sensing response results, we drew radar plots, which indicated that selective pattern recognition could be achieved by using the five sensing materials together. Thus, we demonstrated the possibility to distinguish each type of gas by applying the patterns to recognition techniques.

Original languageEnglish
JournalSensors (Basel, Switzerland)
Volume19
Issue number16
DOIs
Publication statusPublished - 2019 Aug 15

Fingerprint

Nitrogen Compounds
nitrogen compounds
Nitric Oxide
Nitrogen
Graphite
Gases
Nitric oxide
Thin films
Nanoparticles
Graphene
gases
Radar
Respiratory system
Nitrogen Dioxide
nitric oxide
Sensors
Odors
graphene
Ammonia
Respiratory System

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Yoo, Ran ; Lee, Hyun Sook ; Kim, Wonkyung ; Park, Yunji ; Koo, Aran ; Jin, Sang Hyun ; Pham, Thang Viet ; Kim, Myung Jong ; Maeng, Sunglyul ; Lee, Wooyoung. / Selective Detection of Nitrogen-Containing Compound Gases. In: Sensors (Basel, Switzerland). 2019 ; Vol. 19, No. 16.
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Yoo, R, Lee, HS, Kim, W, Park, Y, Koo, A, Jin, SH, Pham, TV, Kim, MJ, Maeng, S & Lee, W 2019, 'Selective Detection of Nitrogen-Containing Compound Gases', Sensors (Basel, Switzerland), vol. 19, no. 16. https://doi.org/10.3390/s19163565

Selective Detection of Nitrogen-Containing Compound Gases. / Yoo, Ran; Lee, Hyun Sook; Kim, Wonkyung; Park, Yunji; Koo, Aran; Jin, Sang Hyun; Pham, Thang Viet; Kim, Myung Jong; Maeng, Sunglyul; Lee, Wooyoung.

In: Sensors (Basel, Switzerland), Vol. 19, No. 16, 15.08.2019.

Research output: Contribution to journalArticle

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