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CC BY-NC V4.0, Open Access
Journal article
Photocatalytic fixation of NOx in soils
Chemosphere (Oxford), Vol.338, 139576
2023
Abstract
Nitrogen oxides (NOx = NO + NO2) are important atmospheric pollutants that are directly harmful to human health. Recently in urban and industrial areas, synthetic materials have been developed and deployed to photocatalytically oxidize NOx to nitrate (NO3−) in order to improve air quality. We show that the natural presence of small amounts (≤5%) of titanium oxides, such as anatase and rutile, can also drive NOx oxidation to nitrate in soils under UV–visible irradiation. The NO uptake coefficients ranged between 0.1 × 10−6 for sandy soils to 6.4 × 10−5 in the case of tropical clay soils; the latter comparable in efficiency to current industrial man-made catalysts. This photocatalytic N-fixation mechanism offers a new strategy for NOx mitigation from the atmosphere by transforming it into nitrate, and simultaneously provides an energy efficient source of essential fertilizer to agriculture.
Details
- Title
- Photocatalytic fixation of NOx in soils
- Authors/Creators
- Antonio R. Sánchez-Rodríguez - University of CórdobaElena Gómez-Álvarez - University of CórdobaJosé M. Méndez - University of CórdobaUte M. Skiba - UK Centre for Ecology & HydrologyDavey L. Jones - Murdoch University, Centre for Sustainable Farming SystemsDave R. Chadwick - Bangor UniversityMaría C. del Campillo - University of CórdobaRaphael BA Fernandes - Universidade Federal de ViçosaJörg Kleffmann - University of WuppertalVidal Barrón - University of Córdoba
- Publication Details
- Chemosphere (Oxford), Vol.338, 139576
- Publisher
- Elsevier Ltd.
- Identifiers
- 991005593753207891
- Copyright
- © 2023 The Authors.
- Murdoch Affiliation
- Food Futures Institute
- Language
- English
- Resource Type
- Journal article
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