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

Keane, Donal A. and Hamilton, Niki and Gibson, Lorraine T. and Pillai, Suresh C. and Holmes, Justin D. and Morris, Michael A. (2017) Photocatalytic air-purification : a low-cost, real-time gas detection method. Analytical Methods, 9. pp. 170-175. ISSN 1759-9660 (https://doi.org/10.1039/C6AY03008D)

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Abstract

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.

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