0000000000180126

AUTHOR

Tarek Trabelsi

showing 3 related works from this author

Photochemistry and Non-adiabatic Photodynamics of the HOSO Radical

2021

6 pags., 2 figs.

Ozonebusiness.industryChemistryGeneral ChemistryPhotochemistryBiochemistryQuantum chemistryCatalysisAtmospherechemistry.chemical_compoundColloid and Surface ChemistryReactivity (chemistry)GeoengineeringbusinessAdiabatic processStratosphereJournal of the American Chemical Society
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Photochemistry of HOSO2 and SO3 and Implications for the Production of Sulfuric Acid

2021

9 pags., 5 figs.

RadicalPhotodissociationContext (language use)Sulfuric acidGeneral ChemistryPhotochemistryBiochemistryCatalysischemistry.chemical_compoundColloid and Surface ChemistrychemistrySulfur trioxideReactivity (chemistry)Acid rainSulfur dioxideJournal of the American Chemical Society
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Gas-Phase Photolysis of Hg(I) Radical Species: A New Atmospheric Mercury Reduction Process

2019

The efficient gas-phase photoreduction of Hg(II) has recently been shown to change mercury cycling significantly in the atmosphere and its deposition to the Earth's surface. However, the photolysis of key Hg(I) species within that cycle is currently not considered. Here we present ultraviolet-visible absorption spectra and cross-sections of HgCl, HgBr, HgI, and HgOH radicals, computed by high-level quantum-chemical methods, and show for the first time that gas-phase Hg(I) photoreduction can occur at time scales that eventually would influence the mercury chemistry in the atmosphere. These results provide new fundamental understanding of the photobehavior of Hg(I) radicals and show that the …

Mercury cyclingAbsorption spectroscopyChemistryRadicalPhotodissociationAtmospheric mercurychemistry.chemical_elementGeneral Chemistry010402 general chemistryPhotochemistry01 natural sciences7. Clean energyBiochemistryCatalysis0104 chemical sciencesGas phaseMercury (element)Colloid and Surface Chemistry13. Climate actionGlobal distribution
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