Miniaturized planar room temperature ionic liquid electrochemical gas sensor for rapid multiple gas pollutants monitoring

Hao Wan, Heyu Yin, Lu Lin, Xiangqun Zeng, Andrew J. Mason

Research output: Research - peer-reviewArticle

Abstract

The growing impact of airborne pollutants and explosive gases on human health and occupational safety has escalated the demand of sensors to monitor hazardous gases. This paper presents a new miniaturized planar electrochemical gas sensor for rapid measurement of multiple gaseous hazards. The gas sensor features a porous polytetrafluoroethylene substrate that enables fast gas diffusion and room temperature ionic liquid as the electrolyte. Metal sputtering was utilized for platinum electrodes fabrication to enhance adhesion between the electrodes and the substrate. Together with carefully selected electrochemical methods, the miniaturized gas sensor is capable of measuring multiple gases including oxygen, methane, ozone and sulfur dioxide that are important to human health and safety. Compared to its manually-assembled Clark-cell predecessor, this sensor provides better sensitivity, linearity and repeatability, as validated for oxygen monitoring. With solid performance, fast response and miniaturized size, this sensor is promising for deployment in wearable devices for real-time point-of-exposure gas pollutant monitoring.

LanguageEnglish (US)
Pages638-646
Number of pages9
JournalSensors and Actuators, B: Chemical
Volume255
DOIs
StatePublished - Feb 1 2018

Profile

Ionic Liquids
Electrochemical sensors
Chemical sensors
Gases
Monitoring
Temperature
Ionic liquids
contaminants
sensors
room temperature
liquids
gases
Sensors
Health
Oxygen
Electrodes
Substrates
health
safety
electrodes

Keywords

  • Electrochemical gas sensor
  • Miniaturized sensor
  • Planar platinum electrode
  • Room temperature ionic liquid

ASJC Scopus subject areas

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

Cite this

Miniaturized planar room temperature ionic liquid electrochemical gas sensor for rapid multiple gas pollutants monitoring. / Wan, Hao; Yin, Heyu; Lin, Lu; Zeng, Xiangqun; Mason, Andrew J.

In: Sensors and Actuators, B: Chemical, Vol. 255, 01.02.2018, p. 638-646.

Research output: Research - peer-reviewArticle

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