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Photocatalytic fixation of NOx in soils

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Photocatalytic fixation of NOx in soils. / Sánchez-Rodríguez, Antonio R; Gómez-Álvarez, Elena; Méndez, José M et al.
In: Chemosphere, Vol. 338, 139576, 01.10.2023.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Sánchez-Rodríguez, AR, Gómez-Álvarez, E, Méndez, JM, Skiba, UM, Jones, DL, Chadwick, DR, Del Campillo, MC, Fernandes, RB, Kleffmann, J & Barrón, V 2023, 'Photocatalytic fixation of NOx in soils', Chemosphere, vol. 338, 139576. https://doi.org/10.1016/j.chemosphere.2023.139576

APA

Sánchez-Rodríguez, A. R., Gómez-Álvarez, E., Méndez, J. M., Skiba, U. M., Jones, D. L., Chadwick, D. R., Del Campillo, M. C., Fernandes, R. B., Kleffmann, J., & Barrón, V. (2023). Photocatalytic fixation of NOx in soils. Chemosphere, 338, Article 139576. https://doi.org/10.1016/j.chemosphere.2023.139576

CBE

Sánchez-Rodríguez AR, Gómez-Álvarez E, Méndez JM, Skiba UM, Jones DL, Chadwick DR, Del Campillo MC, Fernandes RB, Kleffmann J, Barrón V. 2023. Photocatalytic fixation of NOx in soils. Chemosphere. 338:Article 139576. https://doi.org/10.1016/j.chemosphere.2023.139576

MLA

Sánchez-Rodríguez, Antonio R et al. "Photocatalytic fixation of NOx in soils". Chemosphere. 2023. 338. https://doi.org/10.1016/j.chemosphere.2023.139576

VancouverVancouver

Sánchez-Rodríguez AR, Gómez-Álvarez E, Méndez JM, Skiba UM, Jones DL, Chadwick DR et al. Photocatalytic fixation of NOx in soils. Chemosphere. 2023 Oct 1;338:139576. Epub 2023 Jul 18. doi: 10.1016/j.chemosphere.2023.139576

Author

Sánchez-Rodríguez, Antonio R ; Gómez-Álvarez, Elena ; Méndez, José M et al. / Photocatalytic fixation of NOx in soils. In: Chemosphere. 2023 ; Vol. 338.

RIS

TY - JOUR

T1 - Photocatalytic fixation of NOx in soils

AU - Sánchez-Rodríguez, Antonio R

AU - Gómez-Álvarez, Elena

AU - Méndez, José M

AU - Skiba, Ute M

AU - Jones, Davey L

AU - Chadwick, Dave R

AU - Del Campillo, María C

AU - Fernandes, Raphael Ba

AU - Kleffmann, Jörg

AU - Barrón, Vidal

N1 - Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - 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.

AB - 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.

KW - Humans

KW - Nitrates

KW - Soil

KW - Nitrogen Oxides/analysis

KW - Air Pollution/analysis

KW - Ultraviolet Rays

U2 - 10.1016/j.chemosphere.2023.139576

DO - 10.1016/j.chemosphere.2023.139576

M3 - Article

C2 - 37474039

VL - 338

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

M1 - 139576

ER -