Sensitive colorimetric sensors for visual detection of carbon dioxide and sulfur dioxide

Chandrani Chatterjee, Ayusman Sen

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A series of highly efficient, solid-state sensors for direct colorimetric detection of gaseous CO2 and SO2 is described. The basic components of the sensors are a CO2 and SO2-responsive, tertiary amino alcohol, such as triethanolamine, and a pH-indicator dye, e.g. cresol red, immobilized on a porous γ-aluminum oxide support. These sensors show distinct visual responses to low levels of CO2 and SO2 present in air. A structure-performance relationship was also established for these sensors. To increase the shelf-life, tertiary amino alcohols were covalently attached to the porous alumina support. These porous alumina-supported tertiary amino alcohols also offer potential for use as adsorbents for acidic gases such as CO2 and SO2 with the ability to selectively release these under different conditions, allowing easy separation from a gas stream.

Original languageEnglish (US)
Pages (from-to)5642-5647
Number of pages6
JournalJournal of Materials Chemistry A
Volume3
Issue number10
DOIs
StatePublished - Mar 14 2015

Fingerprint

Amino alcohols
Amino Alcohols
Sulfur Dioxide
Aluminum Oxide
Sulfur dioxide
Carbon Dioxide
Carbon dioxide
Sensors
Alumina
Gases
Solid-state sensors
Triethanolamine
Adsorbents
Coloring Agents
Dyes
Aluminum
Oxides
Air

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

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Sensitive colorimetric sensors for visual detection of carbon dioxide and sulfur dioxide. / Chatterjee, Chandrani; Sen, Ayusman.

In: Journal of Materials Chemistry A, Vol. 3, No. 10, 14.03.2015, p. 5642-5647.

Research output: Contribution to journalArticle

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