Strontium cobaltite coated optical sensors for high temperature carbon dioxide detection

Xiaotong Wei, Tao Wei, Jiansheng Li, Xinwei Lan, Hai Xiao, Jerry Lin

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Carbon dioxide sorption on perovskite type metal oxide, Ba0.5Sr0.5Co0.8Fe0.2O3-δ, was studied at high temperatures for the development of a high temperature optical carbon dioxide sensor. When exposed to carbon dioxide in 600-700 °C Ba0.5Sr0.5Co0.8Fe0.2O3-δ reacts with carbon dioxide to form Sr0.6Ba0.4CO3. The sorption capacity increases with carbon dioxide pressures. The perovskite structure of the metal oxide after carbon dioxide sorption can be recovered by exposing the material to air at a temperature higher than 680 °C. The sorption rate with temperature and the high temperature sorption mechanism can be described by the homogeneous model. The optical sensor uses Ba0.5Sr0.5Co0.8Fe0.2O3-δ as the sensing material and long period fiber gratings as the optical component. The Ba0.5Sr0.5Co0.8Fe0.2O3-δ coated long period fiber grating (LPFG) can measure carbon dioxide in the concentration range of 1-30% in air (1 atm total pressure) at 600 and 700 °C. The sensor maintains its functionality after several repeated cycles of carbon dioxide detection at 700 °C.

Original languageEnglish (US)
Pages (from-to)260-266
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume144
Issue number1
DOIs
StatePublished - Jan 29 2010

Fingerprint

Strontium
Optical sensors
optical measuring instruments
Carbon Dioxide
strontium
carbon dioxide
Carbon dioxide
sorption
Sorption
Temperature
Perovskite
Oxides
metal oxides
Metals
gratings
fibers
cobaltite
Fibers
sensors
air

Keywords

  • BaSrCoFeO
  • Carbon dioxide
  • Long period fiber gratings
  • Optical sensor
  • Sorption

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

Strontium cobaltite coated optical sensors for high temperature carbon dioxide detection. / Wei, Xiaotong; Wei, Tao; Li, Jiansheng; Lan, Xinwei; Xiao, Hai; Lin, Jerry.

In: Sensors and Actuators, B: Chemical, Vol. 144, No. 1, 29.01.2010, p. 260-266.

Research output: Contribution to journalArticle

Wei, Xiaotong ; Wei, Tao ; Li, Jiansheng ; Lan, Xinwei ; Xiao, Hai ; Lin, Jerry. / Strontium cobaltite coated optical sensors for high temperature carbon dioxide detection. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 144, No. 1. pp. 260-266.
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