Mifsud, D. V., Kaňuchová, Z., Auriacombe, O., Herczku, P., Rácz, R., Kovács, S. T. S., Qasim, D., Sulik, B., Juhász, Z., Vajda, I., and others. (2026) Irradiation of methanol ice on a sulfur-rich dust analogue at 25 K: a mid-infrared spectroscopic study. Physical Chemistry Chemical Physics, 28 (5). pp. 3642-3655. ISSN 1463-9076. (doi:10.1039/d5cp03973h) (KAR id:112834)
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| Official URL: https://doi.org/10.1039/d5cp03973h |
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Abstract
Despite possibly representing a comparatively large reservoir of sulfur in extraterrestrial environments, the role of sulfur allotropes in the radiation-driven chemistry occurring in low-temperature ices in astrophysical media (e.g., pre-stellar nebulae or the outer Solar System) is an underexplored topic. Previous work has shown that the irradiation of astrophysical ice analogues composed of simple molecules on top of layers of allotropic sulfur results in the formation of simple, inorganic sulfur-bearing molecules in the ice phase. Our present work seeks to qualitatively determine whether the analogous irradiation of methanol on top of allotropic sulfur may lead to the formation of organosulfur molecules, as well as H2S. Using in situ mid-infrared absorption spectroscopy, we have found compelling evidence for the formation of SO2, CS2, H2SO4, and a number of sulfur oxyanions, as well as tentative evidence for H2S formation. Evidence for the formation of thiol molecules was inconclusive. Our experimental results are discussed in the context of their applicability to sulfur astrochemistry.
| Item Type: | Article |
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| DOI/Identification number: | 10.1039/d5cp03973h |
| Subjects: | Q Science > QB Astronomy |
| Institutional Unit: | Schools > School of Engineering, Mathematics and Physics > Physics and Astronomy |
| Former Institutional Unit: |
There are no former institutional units.
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| Funders: |
European Union (https://ror.org/019w4f821)
Royal Society (https://ror.org/03wnrjx87) European Cooperation in Science and Technology (https://ror.org/01bstzn19) Hungarian Research Network (https://ror.org/04w6pnc49) University of Kent (https://ror.org/00xkeyj56) |
| SWORD Depositor: | JISC Publications Router |
| Depositing User: | JISC Publications Router |
| Date Deposited: | 28 Jan 2026 14:16 UTC |
| Last Modified: | 14 Feb 2026 03:43 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/112834 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Mifsud, D. V..
| Creator's ORCID: |
 https://orcid.org/0000-0002-0379-354X
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| CReDIT Contributor Roles: |
Mason, N. J..
| Creator's ORCID: |
https://orcid.org/0000-0002-4468-8324
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| CReDIT Contributor Roles: |
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