期刊
ACS EARTH AND SPACE CHEMISTRY
卷 5, 期 7, 页码 1741-1751出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsearthspacechem.1c00083
关键词
meteorites; phosphorus problem; DFT; prebiotic chemistry; surface modeling
资金
- Italian Space Agency (ASI) [2019-3-U.O]
- European Research Council (ERC) [865657]
- MINECO [CTQ2017-89132-P]
- DIUE [2017SGR1323]
- Marie Sklodowska-Curie Astro-Chemical Origins (ACO) Project [811312]
- Marie Curie Actions (MSCA) [811312] Funding Source: Marie Curie Actions (MSCA)
- European Research Council (ERC) [865657] Funding Source: European Research Council (ERC)
The study suggests that iron/nickel phosphides in metallic meteorites may serve as a potential source of phosphorus, capable of reacting with water to produce oxygenated phosphorus compounds that can react with organic molecules to form bonds. Such a source of phosphorus is of significance for the absorption and utilization by living organisms.
Phosphorus is ubiquitous in planet Earth and plays a fundamental role in all living systems. Finding a reasonable prebiotic source of phosphorus is not trivial, as common sources where it is present nowadays are in the form of phosphate minerals, which are rather insoluble and nonreactive materials, making it unavailable for ready incorporation in living organisms. A possible source of phosphorus is from exogenous meteoritic bombardment and, in particular, iron/nickel phosphides. These materials, by simple interaction with water, produce oxygenated phosphorus compounds, which can easily react with organic molecules, thus forming C-O-P bonds. In the present work, periodic ab initio simulations at the PBE level (inclusive of dispersion interactions) have been carried out on metallic Fe2NiP schreibersite, as a relatively abundant component of metallic meteorites, in order to characterize the structural, energetic, and vibrational properties of both bulk and surfaces of this material. The aim is to study the relative stability among different surfaces and also to characterize the nanocrystal morphology of the mineral.
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