Highly sensitive and selective trimethylamine sensors using Ru-doped SnO 2 hollow spheres

Kang Min Kim, Kwon Il Choi, Hyun Mook Jeong, Hyo Joong Kim, Hae Ryong Kim, Jong Heun Lee

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The 0.45 mol% Ru-doped SnO 2 (Ru-SnO 2) hollow spheres, each with a shell thickness of ∼17 nm, were prepared by the uniform coating of Ru- and Sn-precursors onto SiO 2 microspheres with diameters of ∼300 nm, followed by heat treatment at 350°C and subsequent removal of the core SiO 2 using a dilute HF solution. The Ru-SnO 2 hollow spheres showed high responses to 5 ppm trimethylamine (TMA) at 350°C with negligible cross-responses to toluene, benzene, NH 3, CO, H 2, and C 3H 8 and decreased cross-responses to C 2H 5OH, while undoped SnO 2 hollow spheres showed similar responses to TMA and C 2H 5OH. The selective and sensitive detection of TMA that was achieved in Ru-doped SnO 2 hollow spheres is explained in relation to the catalytic sensitization of Ru and the gas-accessible hollow morphology of the thin shell configurations.

Original languageEnglish
Pages (from-to)733-738
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume166-167
DOIs
Publication statusPublished - 2012 May 20

Fingerprint

hollow
sensors
Sensors
Toluene
Carbon Monoxide
Benzene
Microspheres
Gases
Heat treatment
toluene
heat treatment
Coatings
benzene
trimethylamine
coatings
configurations
gases

Keywords

  • Gas sensors
  • Hollow spheres
  • Ru-SnO
  • Trimethylamine

ASJC Scopus subject areas

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

Cite this

Highly sensitive and selective trimethylamine sensors using Ru-doped SnO 2 hollow spheres. / Kim, Kang Min; Choi, Kwon Il; Jeong, Hyun Mook; Kim, Hyo Joong; Kim, Hae Ryong; Lee, Jong Heun.

In: Sensors and Actuators, B: Chemical, Vol. 166-167, 20.05.2012, p. 733-738.

Research output: Contribution to journalArticle

Kim, Kang Min ; Choi, Kwon Il ; Jeong, Hyun Mook ; Kim, Hyo Joong ; Kim, Hae Ryong ; Lee, Jong Heun. / Highly sensitive and selective trimethylamine sensors using Ru-doped SnO 2 hollow spheres. In: Sensors and Actuators, B: Chemical. 2012 ; Vol. 166-167. pp. 733-738.
@article{510f0d2bfe1e413394fc686319929e65,
title = "Highly sensitive and selective trimethylamine sensors using Ru-doped SnO 2 hollow spheres",
abstract = "The 0.45 mol{\%} Ru-doped SnO 2 (Ru-SnO 2) hollow spheres, each with a shell thickness of ∼17 nm, were prepared by the uniform coating of Ru- and Sn-precursors onto SiO 2 microspheres with diameters of ∼300 nm, followed by heat treatment at 350°C and subsequent removal of the core SiO 2 using a dilute HF solution. The Ru-SnO 2 hollow spheres showed high responses to 5 ppm trimethylamine (TMA) at 350°C with negligible cross-responses to toluene, benzene, NH 3, CO, H 2, and C 3H 8 and decreased cross-responses to C 2H 5OH, while undoped SnO 2 hollow spheres showed similar responses to TMA and C 2H 5OH. The selective and sensitive detection of TMA that was achieved in Ru-doped SnO 2 hollow spheres is explained in relation to the catalytic sensitization of Ru and the gas-accessible hollow morphology of the thin shell configurations.",
keywords = "Gas sensors, Hollow spheres, Ru-SnO, Trimethylamine",
author = "Kim, {Kang Min} and Choi, {Kwon Il} and Jeong, {Hyun Mook} and Kim, {Hyo Joong} and Kim, {Hae Ryong} and Lee, {Jong Heun}",
year = "2012",
month = "5",
day = "20",
doi = "10.1016/j.snb.2012.03.049",
language = "English",
volume = "166-167",
pages = "733--738",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

TY - JOUR

T1 - Highly sensitive and selective trimethylamine sensors using Ru-doped SnO 2 hollow spheres

AU - Kim, Kang Min

AU - Choi, Kwon Il

AU - Jeong, Hyun Mook

AU - Kim, Hyo Joong

AU - Kim, Hae Ryong

AU - Lee, Jong Heun

PY - 2012/5/20

Y1 - 2012/5/20

N2 - The 0.45 mol% Ru-doped SnO 2 (Ru-SnO 2) hollow spheres, each with a shell thickness of ∼17 nm, were prepared by the uniform coating of Ru- and Sn-precursors onto SiO 2 microspheres with diameters of ∼300 nm, followed by heat treatment at 350°C and subsequent removal of the core SiO 2 using a dilute HF solution. The Ru-SnO 2 hollow spheres showed high responses to 5 ppm trimethylamine (TMA) at 350°C with negligible cross-responses to toluene, benzene, NH 3, CO, H 2, and C 3H 8 and decreased cross-responses to C 2H 5OH, while undoped SnO 2 hollow spheres showed similar responses to TMA and C 2H 5OH. The selective and sensitive detection of TMA that was achieved in Ru-doped SnO 2 hollow spheres is explained in relation to the catalytic sensitization of Ru and the gas-accessible hollow morphology of the thin shell configurations.

AB - The 0.45 mol% Ru-doped SnO 2 (Ru-SnO 2) hollow spheres, each with a shell thickness of ∼17 nm, were prepared by the uniform coating of Ru- and Sn-precursors onto SiO 2 microspheres with diameters of ∼300 nm, followed by heat treatment at 350°C and subsequent removal of the core SiO 2 using a dilute HF solution. The Ru-SnO 2 hollow spheres showed high responses to 5 ppm trimethylamine (TMA) at 350°C with negligible cross-responses to toluene, benzene, NH 3, CO, H 2, and C 3H 8 and decreased cross-responses to C 2H 5OH, while undoped SnO 2 hollow spheres showed similar responses to TMA and C 2H 5OH. The selective and sensitive detection of TMA that was achieved in Ru-doped SnO 2 hollow spheres is explained in relation to the catalytic sensitization of Ru and the gas-accessible hollow morphology of the thin shell configurations.

KW - Gas sensors

KW - Hollow spheres

KW - Ru-SnO

KW - Trimethylamine

UR - http://www.scopus.com/inward/record.url?scp=84861186403&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861186403&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2012.03.049

DO - 10.1016/j.snb.2012.03.049

M3 - Article

AN - SCOPUS:84861186403

VL - 166-167

SP - 733

EP - 738

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

ER -