Low power micro-gas sensors using mixed SnO2 nanoparticles and MWCNTs to detect NO2, NH3, and xylene gases for ubiquitous sensor network applications

Kwang Yong Choi, Joon Shik Park, Kwang Bum Park, Hyun Jae Kim, Hyo Derk Park, Seong Dong Kim

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Using mixed SnO2 nanoparticles with 1 wt.% MWCNTs sensing materials, NO2, NH3, and xylene gas sensors were fabricated on micro-platforms. A micro-platform consists of micro-sensing electrode and micro-heater on 2 μm thick SiNx membrane. The fabricated gas sensors were characterized to NO2, NH3, and xylene gases, respectively, as a function of concentration at 300 °C and temperature from 180 °C to 380 °C at constant concentration. The measured highest sensitivities for the NO2, NH3, and xylene were 1.06 at 1.2 ppm and 220 °C, 0.19 at 60 ppm, and 220 °C, and 0.15 at 3.6 ppm and 220 °C, respectively. So, it was found that 220 °C was the optimum temperature to have the best sensitivities. From these results, mixed SnO2 nanoparticles with 1 wt.% MWCNTs showed good sensitivity and selectivity at low power operation below 30 mW. Fabricated micro-gas sensors could be used for ubiquitous sensor network applications to monitor environmental pollutants in the air.

Original languageEnglish
Pages (from-to)65-72
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume150
Issue number1
DOIs
Publication statusPublished - 2010 Oct 21

Fingerprint

Xylenes
xylene
Xylene
Chemical sensors
Sensor networks
Gases
Nanoparticles
nanoparticles
sensors
gases
sensitivity
Environmental Pollutants
platforms
heaters
Membranes
contaminants
Temperature
Electrodes
selectivity
Air

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

Choi, Kwang Yong ; Park, Joon Shik ; Park, Kwang Bum ; Kim, Hyun Jae ; Park, Hyo Derk ; Kim, Seong Dong. / Low power micro-gas sensors using mixed SnO2 nanoparticles and MWCNTs to detect NO2, NH3, and xylene gases for ubiquitous sensor network applications. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 150, No. 1. pp. 65-72.
@article{ab1ca5a63f62464b8b5caedd2778abb4,
title = "Low power micro-gas sensors using mixed SnO2 nanoparticles and MWCNTs to detect NO2, NH3, and xylene gases for ubiquitous sensor network applications",
abstract = "Using mixed SnO2 nanoparticles with 1 wt.{\%} MWCNTs sensing materials, NO2, NH3, and xylene gas sensors were fabricated on micro-platforms. A micro-platform consists of micro-sensing electrode and micro-heater on 2 μm thick SiNx membrane. The fabricated gas sensors were characterized to NO2, NH3, and xylene gases, respectively, as a function of concentration at 300 °C and temperature from 180 °C to 380 °C at constant concentration. The measured highest sensitivities for the NO2, NH3, and xylene were 1.06 at 1.2 ppm and 220 °C, 0.19 at 60 ppm, and 220 °C, and 0.15 at 3.6 ppm and 220 °C, respectively. So, it was found that 220 °C was the optimum temperature to have the best sensitivities. From these results, mixed SnO2 nanoparticles with 1 wt.{\%} MWCNTs showed good sensitivity and selectivity at low power operation below 30 mW. Fabricated micro-gas sensors could be used for ubiquitous sensor network applications to monitor environmental pollutants in the air.",
author = "Choi, {Kwang Yong} and Park, {Joon Shik} and Park, {Kwang Bum} and Kim, {Hyun Jae} and Park, {Hyo Derk} and Kim, {Seong Dong}",
year = "2010",
month = "10",
day = "21",
doi = "10.1016/j.snb.2010.07.041",
language = "English",
volume = "150",
pages = "65--72",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",
number = "1",

}

Low power micro-gas sensors using mixed SnO2 nanoparticles and MWCNTs to detect NO2, NH3, and xylene gases for ubiquitous sensor network applications. / Choi, Kwang Yong; Park, Joon Shik; Park, Kwang Bum; Kim, Hyun Jae; Park, Hyo Derk; Kim, Seong Dong.

In: Sensors and Actuators, B: Chemical, Vol. 150, No. 1, 21.10.2010, p. 65-72.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Low power micro-gas sensors using mixed SnO2 nanoparticles and MWCNTs to detect NO2, NH3, and xylene gases for ubiquitous sensor network applications

AU - Choi, Kwang Yong

AU - Park, Joon Shik

AU - Park, Kwang Bum

AU - Kim, Hyun Jae

AU - Park, Hyo Derk

AU - Kim, Seong Dong

PY - 2010/10/21

Y1 - 2010/10/21

N2 - Using mixed SnO2 nanoparticles with 1 wt.% MWCNTs sensing materials, NO2, NH3, and xylene gas sensors were fabricated on micro-platforms. A micro-platform consists of micro-sensing electrode and micro-heater on 2 μm thick SiNx membrane. The fabricated gas sensors were characterized to NO2, NH3, and xylene gases, respectively, as a function of concentration at 300 °C and temperature from 180 °C to 380 °C at constant concentration. The measured highest sensitivities for the NO2, NH3, and xylene were 1.06 at 1.2 ppm and 220 °C, 0.19 at 60 ppm, and 220 °C, and 0.15 at 3.6 ppm and 220 °C, respectively. So, it was found that 220 °C was the optimum temperature to have the best sensitivities. From these results, mixed SnO2 nanoparticles with 1 wt.% MWCNTs showed good sensitivity and selectivity at low power operation below 30 mW. Fabricated micro-gas sensors could be used for ubiquitous sensor network applications to monitor environmental pollutants in the air.

AB - Using mixed SnO2 nanoparticles with 1 wt.% MWCNTs sensing materials, NO2, NH3, and xylene gas sensors were fabricated on micro-platforms. A micro-platform consists of micro-sensing electrode and micro-heater on 2 μm thick SiNx membrane. The fabricated gas sensors were characterized to NO2, NH3, and xylene gases, respectively, as a function of concentration at 300 °C and temperature from 180 °C to 380 °C at constant concentration. The measured highest sensitivities for the NO2, NH3, and xylene were 1.06 at 1.2 ppm and 220 °C, 0.19 at 60 ppm, and 220 °C, and 0.15 at 3.6 ppm and 220 °C, respectively. So, it was found that 220 °C was the optimum temperature to have the best sensitivities. From these results, mixed SnO2 nanoparticles with 1 wt.% MWCNTs showed good sensitivity and selectivity at low power operation below 30 mW. Fabricated micro-gas sensors could be used for ubiquitous sensor network applications to monitor environmental pollutants in the air.

UR - http://www.scopus.com/inward/record.url?scp=77957286196&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77957286196&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2010.07.041

DO - 10.1016/j.snb.2010.07.041

M3 - Article

VL - 150

SP - 65

EP - 72

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

IS - 1

ER -