Abstract

Improvements in the efficiency of combustion within a vehicle can lead to reductions in the emission of harmful pollutants and increased fuel efficiency. Gas sensors have a role to play in this process, since they can provide real time feedback to vehicular fuel and emissions management systems as well as reducing the discrepancy between emissions observed in factory tests and ‘real world’ scenarios. In this review we survey the current state-of-the-art in using porous materials for sensing the gases relevant to automotive emissions. Two broad classes of porous material – zeolites and metal–organic frameworks (MOFs) – are introduced, and their potential for gas sensing is discussed. The adsorptive, spectroscopic and electronic techniques for sensing gases using porous materials are summarised. Examples of the use of zeolites and MOFs in the sensing of water vapour, oxygen, NOx, carbon monoxide and carbon dioxide, hydrocarbons and volatile organic compounds, ammonia, hydrogen sulfide, sulfur dioxide and hydrogen are then detailed. Both types of porous material (zeolites and MOFs) reveal great promise for the fabrication of sensors for exhaust gases and vapours due to high selectivity and sensitivity. The size and shape selectivity of the zeolite and MOF materials are controlled by variation of pore dimensions, chemical composition (hydrophilicity/hydrophobicity), crystal size and orientation, thus enabling detection and differentiation between different gases and vapours.
Original languageEnglish
Pages (from-to)4290-4321
JournalChemical Society Reviews
Volume44
Issue number13
Early online date18 May 2015
DOIs
Publication statusPublished - 7 Jul 2015

Fingerprint

Zeolites
Porous materials
Gases
Metals
Vapors
Volatile Organic Compounds
Sulfur Dioxide
Hydrogen Sulfide
Steam
Hydrophilicity
Carbon Monoxide
Hydrophobicity
Hydrocarbons
Exhaust gases
Chemical sensors
Ammonia
Carbon Dioxide
Crystal orientation
Industrial plants
Hydrogen

Cite this

Gas sensing using porous materials for automotive applications. / Wales, Dominic J.; Grand, Julien; Ting, Valeska P.; Burke, Richard D.; Edler, Karen J.; Bowen, Chris R.; Mintova, Svetlana; Burrows, Andrew D.

In: Chemical Society Reviews, Vol. 44, No. 13, 07.07.2015, p. 4290-4321.

Research output: Contribution to journalArticle

Wales, Dominic J. ; Grand, Julien ; Ting, Valeska P. ; Burke, Richard D. ; Edler, Karen J. ; Bowen, Chris R. ; Mintova, Svetlana ; Burrows, Andrew D. / Gas sensing using porous materials for automotive applications. In: Chemical Society Reviews. 2015 ; Vol. 44, No. 13. pp. 4290-4321.
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