Photocatalytic air-purification: a low-cost, real-time gas detection method

Donal A. Keane, Niki Hamilton, Lorraine T. Gibson, Suresh C. Pillai, Justin D. Holmes, Michael A. Morris

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This research demonstrates the use of a gas detector as a feasible alternative to the standardized analytical methods typically found in photocatalytic air-purification ISO standard tests and academic literature. A methyl mercaptan detector is calibrated and validated (for linearity) using a standard gas generator. The detector can be directly connected to the photoreactor exit allowing real-time span gas measurement with data-logging at one minute intervals. The detector successfully differentiated samples with different photcatalytic performance. The use of such detectors offers an easy-to use, low-cost alternative to gas measurement with applications in academic research, proof-of-concept photocatalytic tests and also as an educational tool.
Original languageEnglish
Pages (from-to)170-175
Number of pages6
JournalAnalytical Methods
Early online date1 Dec 2016
Publication statusPublished - 7 Jan 2017


  • gas detector
  • photocatalytic air purification
  • ISO standard tests
  • methyl mercaptan detector
  • real-time span
  • gas measurement

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