Ultrasensitive detection of trimethylamine using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis

Yoon Ho Cho, Xishuang Liang, Yun Chan Kang, Jong Heun Lee

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

An ultrasensitive trimethylamine (TMA) sensor was achieved using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis followed by heat treatment at 500 °C, and the effects of Rh doping on TMA sensing characteristics were investigated. The response (resistance ratio) of the Rh-doped SnO2 hollow spheres to 5 ppm TMA at 400°C was 1177.5, which is 33 times higher than that of pure SnO2 hollow spheres. The detection limit of the sensor was as low as 5 ppb. In addition, the Rh-doped SnO2 hollow spheres showed negligible cross-responses to HCHO, benzene, toluene, p-xylene, NH3, CO, H2, and NO2, and a decreased cross-response to C2H5OH, whereas pure SnO2 hollow spheres did not show selective detection of a specific gas. The ultrahigh sensitivity and selective detection to TMA were attributed to the electronic interactions between Rh and SnO2 and the high catalytic activity of Rh to TMA.

Original languageEnglish
Pages (from-to)330-337
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume207
Issue numberPA
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Spray pyrolysis
pyrolysis
sprayers
hollow
ultrasonics
Ultrasonics
sensors
Sensors
Toluene
xylene
Carbon Monoxide
Xylene
Benzene
toluene
catalytic activity
Catalyst activity
heat treatment
Gases
Heat treatment
benzene

Keywords

  • Gas sensor
  • Rh-doped SnO hollow sphere
  • Trimethylamine
  • Ultra-low detection limit
  • Ultrasonic spray pyrolysis

ASJC Scopus subject areas

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

Cite this

Ultrasensitive detection of trimethylamine using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis. / Cho, Yoon Ho; Liang, Xishuang; Kang, Yun Chan; Lee, Jong Heun.

In: Sensors and Actuators, B: Chemical, Vol. 207, No. PA, 01.01.2014, p. 330-337.

Research output: Contribution to journalArticle

@article{27926b79619d4048931bc1e6bd427784,
title = "Ultrasensitive detection of trimethylamine using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis",
abstract = "An ultrasensitive trimethylamine (TMA) sensor was achieved using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis followed by heat treatment at 500 °C, and the effects of Rh doping on TMA sensing characteristics were investigated. The response (resistance ratio) of the Rh-doped SnO2 hollow spheres to 5 ppm TMA at 400°C was 1177.5, which is 33 times higher than that of pure SnO2 hollow spheres. The detection limit of the sensor was as low as 5 ppb. In addition, the Rh-doped SnO2 hollow spheres showed negligible cross-responses to HCHO, benzene, toluene, p-xylene, NH3, CO, H2, and NO2, and a decreased cross-response to C2H5OH, whereas pure SnO2 hollow spheres did not show selective detection of a specific gas. The ultrahigh sensitivity and selective detection to TMA were attributed to the electronic interactions between Rh and SnO2 and the high catalytic activity of Rh to TMA.",
keywords = "Gas sensor, Rh-doped SnO hollow sphere, Trimethylamine, Ultra-low detection limit, Ultrasonic spray pyrolysis",
author = "Cho, {Yoon Ho} and Xishuang Liang and Kang, {Yun Chan} and Lee, {Jong Heun}",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.snb.2014.10.001",
language = "English",
volume = "207",
pages = "330--337",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",
number = "PA",

}

TY - JOUR

T1 - Ultrasensitive detection of trimethylamine using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis

AU - Cho, Yoon Ho

AU - Liang, Xishuang

AU - Kang, Yun Chan

AU - Lee, Jong Heun

PY - 2014/1/1

Y1 - 2014/1/1

N2 - An ultrasensitive trimethylamine (TMA) sensor was achieved using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis followed by heat treatment at 500 °C, and the effects of Rh doping on TMA sensing characteristics were investigated. The response (resistance ratio) of the Rh-doped SnO2 hollow spheres to 5 ppm TMA at 400°C was 1177.5, which is 33 times higher than that of pure SnO2 hollow spheres. The detection limit of the sensor was as low as 5 ppb. In addition, the Rh-doped SnO2 hollow spheres showed negligible cross-responses to HCHO, benzene, toluene, p-xylene, NH3, CO, H2, and NO2, and a decreased cross-response to C2H5OH, whereas pure SnO2 hollow spheres did not show selective detection of a specific gas. The ultrahigh sensitivity and selective detection to TMA were attributed to the electronic interactions between Rh and SnO2 and the high catalytic activity of Rh to TMA.

AB - An ultrasensitive trimethylamine (TMA) sensor was achieved using Rh-doped SnO2 hollow spheres prepared by ultrasonic spray pyrolysis followed by heat treatment at 500 °C, and the effects of Rh doping on TMA sensing characteristics were investigated. The response (resistance ratio) of the Rh-doped SnO2 hollow spheres to 5 ppm TMA at 400°C was 1177.5, which is 33 times higher than that of pure SnO2 hollow spheres. The detection limit of the sensor was as low as 5 ppb. In addition, the Rh-doped SnO2 hollow spheres showed negligible cross-responses to HCHO, benzene, toluene, p-xylene, NH3, CO, H2, and NO2, and a decreased cross-response to C2H5OH, whereas pure SnO2 hollow spheres did not show selective detection of a specific gas. The ultrahigh sensitivity and selective detection to TMA were attributed to the electronic interactions between Rh and SnO2 and the high catalytic activity of Rh to TMA.

KW - Gas sensor

KW - Rh-doped SnO hollow sphere

KW - Trimethylamine

KW - Ultra-low detection limit

KW - Ultrasonic spray pyrolysis

UR - http://www.scopus.com/inward/record.url?scp=84910100126&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84910100126&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2014.10.001

DO - 10.1016/j.snb.2014.10.001

M3 - Article

AN - SCOPUS:84910100126

VL - 207

SP - 330

EP - 337

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

IS - PA

ER -