Enhanced hydrogen sensing properties of Pd-coated SnO2 nanorod arrays in nitrogen and transformer oil

Min Hyung Kim, Byungjin Jang, Wonkyung Kim, Wooyoung Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report enhanced sensing properties of Pd-coated SnO2 nanorod (NR) arrays for detecting H2 gas in N2 and dissolved in transformer oil. The Pd nanoparticles were coated on randomly ordered vertical SnO2 NR arrays by the glancing angle deposition (GLAD) method, which utilizes an electron-beam evaporator and a DC magnetron sputtering system. The Pd-coated SnO2 NR arrays exhibited high response (104 at 1% H2) in N2. Pd-coated SnO2 NR arrays were immersed and in mineral oil that contains various concentrations of dissolved H2 and the electrical response was measured. We found that the Pd-coated SnO2 NR arrays showed superior response (R = ˜96), low detection limit (0.3 ppm), and fast response times (300 s). The Pd-coated SnO2 NR arrays had a temperature coefficient of resistance (TCR) of 3.69 × 10-3 °C−1 at various oil temperatures (20–80 °C), indicating good thermal stability at high temperatures. The sensing mechanism of the Pd-coated SnO2 NR arrays was also demonstrated by using changes in the Schottky barrier height at the Pd/SnO2 interface upon exposure to H2.

Original languageEnglish
Pages (from-to)890-896
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume283
DOIs
Publication statusPublished - 2019 Mar 15

Fingerprint

Insulating oil
Nanorods
transformers
nanorods
Hydrogen
Nitrogen
oils
nitrogen
hydrogen
mineral oils
Mineral Oil
evaporators
Mineral oils
Evaporators
Magnetron sputtering
Temperature
Electron beams
magnetron sputtering
Oils
Thermodynamic stability

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

@article{3d556c88c7b14a4d942f93402950bc12,
title = "Enhanced hydrogen sensing properties of Pd-coated SnO2 nanorod arrays in nitrogen and transformer oil",
abstract = "We report enhanced sensing properties of Pd-coated SnO2 nanorod (NR) arrays for detecting H2 gas in N2 and dissolved in transformer oil. The Pd nanoparticles were coated on randomly ordered vertical SnO2 NR arrays by the glancing angle deposition (GLAD) method, which utilizes an electron-beam evaporator and a DC magnetron sputtering system. The Pd-coated SnO2 NR arrays exhibited high response (104 at 1{\%} H2) in N2. Pd-coated SnO2 NR arrays were immersed and in mineral oil that contains various concentrations of dissolved H2 and the electrical response was measured. We found that the Pd-coated SnO2 NR arrays showed superior response (R = ˜96), low detection limit (0.3 ppm), and fast response times (300 s). The Pd-coated SnO2 NR arrays had a temperature coefficient of resistance (TCR) of 3.69 × 10-3 °C−1 at various oil temperatures (20–80 °C), indicating good thermal stability at high temperatures. The sensing mechanism of the Pd-coated SnO2 NR arrays was also demonstrated by using changes in the Schottky barrier height at the Pd/SnO2 interface upon exposure to H2.",
author = "Kim, {Min Hyung} and Byungjin Jang and Wonkyung Kim and Wooyoung Lee",
year = "2019",
month = "3",
day = "15",
doi = "10.1016/j.snb.2018.12.063",
language = "English",
volume = "283",
pages = "890--896",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

Enhanced hydrogen sensing properties of Pd-coated SnO2 nanorod arrays in nitrogen and transformer oil. / Kim, Min Hyung; Jang, Byungjin; Kim, Wonkyung; Lee, Wooyoung.

In: Sensors and Actuators, B: Chemical, Vol. 283, 15.03.2019, p. 890-896.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhanced hydrogen sensing properties of Pd-coated SnO2 nanorod arrays in nitrogen and transformer oil

AU - Kim, Min Hyung

AU - Jang, Byungjin

AU - Kim, Wonkyung

AU - Lee, Wooyoung

PY - 2019/3/15

Y1 - 2019/3/15

N2 - We report enhanced sensing properties of Pd-coated SnO2 nanorod (NR) arrays for detecting H2 gas in N2 and dissolved in transformer oil. The Pd nanoparticles were coated on randomly ordered vertical SnO2 NR arrays by the glancing angle deposition (GLAD) method, which utilizes an electron-beam evaporator and a DC magnetron sputtering system. The Pd-coated SnO2 NR arrays exhibited high response (104 at 1% H2) in N2. Pd-coated SnO2 NR arrays were immersed and in mineral oil that contains various concentrations of dissolved H2 and the electrical response was measured. We found that the Pd-coated SnO2 NR arrays showed superior response (R = ˜96), low detection limit (0.3 ppm), and fast response times (300 s). The Pd-coated SnO2 NR arrays had a temperature coefficient of resistance (TCR) of 3.69 × 10-3 °C−1 at various oil temperatures (20–80 °C), indicating good thermal stability at high temperatures. The sensing mechanism of the Pd-coated SnO2 NR arrays was also demonstrated by using changes in the Schottky barrier height at the Pd/SnO2 interface upon exposure to H2.

AB - We report enhanced sensing properties of Pd-coated SnO2 nanorod (NR) arrays for detecting H2 gas in N2 and dissolved in transformer oil. The Pd nanoparticles were coated on randomly ordered vertical SnO2 NR arrays by the glancing angle deposition (GLAD) method, which utilizes an electron-beam evaporator and a DC magnetron sputtering system. The Pd-coated SnO2 NR arrays exhibited high response (104 at 1% H2) in N2. Pd-coated SnO2 NR arrays were immersed and in mineral oil that contains various concentrations of dissolved H2 and the electrical response was measured. We found that the Pd-coated SnO2 NR arrays showed superior response (R = ˜96), low detection limit (0.3 ppm), and fast response times (300 s). The Pd-coated SnO2 NR arrays had a temperature coefficient of resistance (TCR) of 3.69 × 10-3 °C−1 at various oil temperatures (20–80 °C), indicating good thermal stability at high temperatures. The sensing mechanism of the Pd-coated SnO2 NR arrays was also demonstrated by using changes in the Schottky barrier height at the Pd/SnO2 interface upon exposure to H2.

UR - http://www.scopus.com/inward/record.url?scp=85059096502&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85059096502&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2018.12.063

DO - 10.1016/j.snb.2018.12.063

M3 - Article

AN - SCOPUS:85059096502

VL - 283

SP - 890

EP - 896

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

ER -