Highly sensitive and selective gas-phase ethanolamine sensor by doping sulfur into nanostructured ZnO

He Zhang, Wenqiong Shi, Na Gao, Ruihua Zhao, Md Maruf Ahmed, Tao Zhang, Jinping Li, Jianping Du, Teddy Asefa

Research output: Contribution to journalArticle

Abstract

The chronic and prolonged exposure to ethanolamine (EA), which is widely used in various commercial and industrial applications, can compromise human health and cause even death. Thus, sensors that can rapidly and efficiently detect EA in air, especially where EA is widely produced or used, is of paramount importance. Herein, we report the synthesis of sulfur-doped, flower-shaped ZnO (SFZO) microparticles that can serve as highly sensitive sensors for the detection of gas-phase EA. The materials are synthesized by a facile synthetic route, involving hydrolysis, precipitation and calcination. The composition, morphology and structure of the materials are characterized by various analytical techniques. The results show that, while the sulfur atoms introduced by substituting some of the oxygen atoms of ZnO do not change the morphology of the ZnO particles, they slightly affect the crystal structure, such as lattice parameters and cell volume, of ZnO, as also confirmed by DFT calculation. More importantly, the sulfur dopant atoms in ZnO create interstitial lattice defects and vacancies that can absorb O2 and form reactive oxygen species on the material better, thereby facilitating the reaction between oxygen and EA. As a result, SFZO-based sensor exhibits a very high sensitivity to EA, with a detection limit of up to 89 ppb and about four times higher sensitivity than its undoped counterpart (FZO-based sensor). SFZO-based sensor also shows a high selectivity to EA, a fast response time (1 s) and a fast recovery time (40 s) to various concentrations of gas phase EA at various temperatures. Additionally, the sensor exhibits a linear detection response with respect to the concentration of EA vapor in a wide concentration range, a property that is highly desirable in gas sensors.

Original languageEnglish
Article number126633
JournalSensors and Actuators, B: Chemical
Volume296
DOIs
Publication statusPublished - Oct 1 2019

Fingerprint

Ethanolamines
Ethanolamine
Sulfur
sulfur
Gases
Doping (additives)
vapor phases
sensors
Sensors
Atoms
Oxygen
sensitivity
microparticles
oxygen
death
roasting
health
Crystal defects
atoms
hydrolysis

Keywords

  • 3-Dimensional ZnO
  • Ethanolamine vapor
  • Flower-shaped ZnO
  • Gas sensor
  • Sensitive gas sensing
  • Sulfur-doping

ASJC Scopus subject areas

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

Cite this

Highly sensitive and selective gas-phase ethanolamine sensor by doping sulfur into nanostructured ZnO. / Zhang, He; Shi, Wenqiong; Gao, Na; Zhao, Ruihua; Ahmed, Md Maruf; Zhang, Tao; Li, Jinping; Du, Jianping; Asefa, Teddy.

In: Sensors and Actuators, B: Chemical, Vol. 296, 126633, 01.10.2019.

Research output: Contribution to journalArticle

Zhang, He ; Shi, Wenqiong ; Gao, Na ; Zhao, Ruihua ; Ahmed, Md Maruf ; Zhang, Tao ; Li, Jinping ; Du, Jianping ; Asefa, Teddy. / Highly sensitive and selective gas-phase ethanolamine sensor by doping sulfur into nanostructured ZnO. In: Sensors and Actuators, B: Chemical. 2019 ; Vol. 296.
@article{e4e817ceacfe42c891efaff822a57c3f,
title = "Highly sensitive and selective gas-phase ethanolamine sensor by doping sulfur into nanostructured ZnO",
abstract = "The chronic and prolonged exposure to ethanolamine (EA), which is widely used in various commercial and industrial applications, can compromise human health and cause even death. Thus, sensors that can rapidly and efficiently detect EA in air, especially where EA is widely produced or used, is of paramount importance. Herein, we report the synthesis of sulfur-doped, flower-shaped ZnO (SFZO) microparticles that can serve as highly sensitive sensors for the detection of gas-phase EA. The materials are synthesized by a facile synthetic route, involving hydrolysis, precipitation and calcination. The composition, morphology and structure of the materials are characterized by various analytical techniques. The results show that, while the sulfur atoms introduced by substituting some of the oxygen atoms of ZnO do not change the morphology of the ZnO particles, they slightly affect the crystal structure, such as lattice parameters and cell volume, of ZnO, as also confirmed by DFT calculation. More importantly, the sulfur dopant atoms in ZnO create interstitial lattice defects and vacancies that can absorb O2 and form reactive oxygen species on the material better, thereby facilitating the reaction between oxygen and EA. As a result, SFZO-based sensor exhibits a very high sensitivity to EA, with a detection limit of up to 89 ppb and about four times higher sensitivity than its undoped counterpart (FZO-based sensor). SFZO-based sensor also shows a high selectivity to EA, a fast response time (1 s) and a fast recovery time (40 s) to various concentrations of gas phase EA at various temperatures. Additionally, the sensor exhibits a linear detection response with respect to the concentration of EA vapor in a wide concentration range, a property that is highly desirable in gas sensors.",
keywords = "3-Dimensional ZnO, Ethanolamine vapor, Flower-shaped ZnO, Gas sensor, Sensitive gas sensing, Sulfur-doping",
author = "He Zhang and Wenqiong Shi and Na Gao and Ruihua Zhao and Ahmed, {Md Maruf} and Tao Zhang and Jinping Li and Jianping Du and Teddy Asefa",
year = "2019",
month = "10",
day = "1",
doi = "10.1016/j.snb.2019.126633",
language = "English",
volume = "296",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

TY - JOUR

T1 - Highly sensitive and selective gas-phase ethanolamine sensor by doping sulfur into nanostructured ZnO

AU - Zhang, He

AU - Shi, Wenqiong

AU - Gao, Na

AU - Zhao, Ruihua

AU - Ahmed, Md Maruf

AU - Zhang, Tao

AU - Li, Jinping

AU - Du, Jianping

AU - Asefa, Teddy

PY - 2019/10/1

Y1 - 2019/10/1

N2 - The chronic and prolonged exposure to ethanolamine (EA), which is widely used in various commercial and industrial applications, can compromise human health and cause even death. Thus, sensors that can rapidly and efficiently detect EA in air, especially where EA is widely produced or used, is of paramount importance. Herein, we report the synthesis of sulfur-doped, flower-shaped ZnO (SFZO) microparticles that can serve as highly sensitive sensors for the detection of gas-phase EA. The materials are synthesized by a facile synthetic route, involving hydrolysis, precipitation and calcination. The composition, morphology and structure of the materials are characterized by various analytical techniques. The results show that, while the sulfur atoms introduced by substituting some of the oxygen atoms of ZnO do not change the morphology of the ZnO particles, they slightly affect the crystal structure, such as lattice parameters and cell volume, of ZnO, as also confirmed by DFT calculation. More importantly, the sulfur dopant atoms in ZnO create interstitial lattice defects and vacancies that can absorb O2 and form reactive oxygen species on the material better, thereby facilitating the reaction between oxygen and EA. As a result, SFZO-based sensor exhibits a very high sensitivity to EA, with a detection limit of up to 89 ppb and about four times higher sensitivity than its undoped counterpart (FZO-based sensor). SFZO-based sensor also shows a high selectivity to EA, a fast response time (1 s) and a fast recovery time (40 s) to various concentrations of gas phase EA at various temperatures. Additionally, the sensor exhibits a linear detection response with respect to the concentration of EA vapor in a wide concentration range, a property that is highly desirable in gas sensors.

AB - The chronic and prolonged exposure to ethanolamine (EA), which is widely used in various commercial and industrial applications, can compromise human health and cause even death. Thus, sensors that can rapidly and efficiently detect EA in air, especially where EA is widely produced or used, is of paramount importance. Herein, we report the synthesis of sulfur-doped, flower-shaped ZnO (SFZO) microparticles that can serve as highly sensitive sensors for the detection of gas-phase EA. The materials are synthesized by a facile synthetic route, involving hydrolysis, precipitation and calcination. The composition, morphology and structure of the materials are characterized by various analytical techniques. The results show that, while the sulfur atoms introduced by substituting some of the oxygen atoms of ZnO do not change the morphology of the ZnO particles, they slightly affect the crystal structure, such as lattice parameters and cell volume, of ZnO, as also confirmed by DFT calculation. More importantly, the sulfur dopant atoms in ZnO create interstitial lattice defects and vacancies that can absorb O2 and form reactive oxygen species on the material better, thereby facilitating the reaction between oxygen and EA. As a result, SFZO-based sensor exhibits a very high sensitivity to EA, with a detection limit of up to 89 ppb and about four times higher sensitivity than its undoped counterpart (FZO-based sensor). SFZO-based sensor also shows a high selectivity to EA, a fast response time (1 s) and a fast recovery time (40 s) to various concentrations of gas phase EA at various temperatures. Additionally, the sensor exhibits a linear detection response with respect to the concentration of EA vapor in a wide concentration range, a property that is highly desirable in gas sensors.

KW - 3-Dimensional ZnO

KW - Ethanolamine vapor

KW - Flower-shaped ZnO

KW - Gas sensor

KW - Sensitive gas sensing

KW - Sulfur-doping

UR - http://www.scopus.com/inward/record.url?scp=85066830714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066830714&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2019.126633

DO - 10.1016/j.snb.2019.126633

M3 - Article

VL - 296

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

M1 - 126633

ER -