Atomic modifications by synchrotron radiation at the calcite–ethanol interface
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| Názov: | Atomic modifications by synchrotron radiation at the calcite–ethanol interface |
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| Autori: | Pasarín, I. S., Bovet, Nicolas Emile, Glyvradal, Magni, Nielsen, Martin Meedom, Bohr, Jakob, Feidenhans'l, R., Stipp, Susan Louise Svane |
| Zdroj: | Journal of synchrotron radiation 19, 530-535 (2012). doi:10.1107/S0909049512021504 Pasarín, I S, Bovet, N E, Glyvradal, M, Nielsen, M M, Bohr, J, Feidenhans'l, R & Stipp, S L S 2012, ' Atomic modifications by synchrotron radiation at the calcite-ethanol interface ', Journal of Synchrotron Radiation, vol. 19, no. 4, pp. 530-535 . https://doi.org/10.1107/S0909049512021504 |
| Informácie o vydavateľovi: | International Union of Crystallography (IUCr), 2012. |
| Rok vydania: | 2012 |
| Predmety: | X-ray photoelectron spectroscopy, Ethanol, Calcium Carbonate: radiation effects, Surface Properties, Photoelectron Spectroscopy, Calcite, Ethanol: radiation effects, Hydrogen Bonding, X-ray reflectivity, Interface, 01 natural sciences, Calcium Carbonate, Calcium Carbonate: chemistry, Ethanol: chemistry, Synchrotrons, 0105 earth and related environmental sciences |
| Popis: | This article reports on studies of the chemical alterations induced by synchrotron radiation at the calcite-ethanol interface, a simple model system for interfaces between minerals and more complex organic molecules containing OH groups. A combination of X-ray reflectivity and X-ray photoelectron spectroscopy of natural calcite, cleaved in distilled ethanol to obtain new clean interfaces, indicated that, during a 5 h period, the two top atomic layers of calcite, CaCO(3), transform into calcium oxide, CaO, by releasing CO(2). Also, the occupation of the first ordered layer of ethanol attached to calcite by hydrogen bonds almost doubles. Comparison between radiated and non-radiated areas of the same samples demonstrate that these effects are induced only by radiation and not caused by aging. These observations contribute to establishing a time limit for synchrotron experiments involving fluid-mineral interfaces where the polar OH group, as present in ethanol, plays a key role in their molecular structure and bonding. Also, the chemical evolution observed in the interface provides new insight into the behavior of some complex organic molecules involved in biomineralization processes. |
| Druh dokumentu: | Article |
| Popis súboru: | application/pdf |
| ISSN: | 1600-5775 0909-0495 |
| DOI: | 10.1107/s0909049512021504 |
| Prístupová URL adresa: | https://backend.orbit.dtu.dk/ws/files/56550664/co5014.pdf https://pubmed.ncbi.nlm.nih.gov/22713885 http://europepmc.org/abstract/MED/22713885 https://www.ncbi.nlm.nih.gov/pubmed/22713885 https://scripts.iucr.org/cgi-bin/paper?S0909049512021504 https://orbit.dtu.dk/en/publications/atomic-modifications-by-synchrotron-radiation-at-the-calciteethanol-interface(dfd83adf-b858-4cd3-baa9-d4b30f23d2ec).html https://orbit.dtu.dk/files/56550664/co5014.pdf https://pubmed.ncbi.nlm.nih.gov/22713885/ https://bib-pubdb1.desy.de/record/143940 https://orbit.dtu.dk/en/publications/dfd83adf-b858-4cd3-baa9-d4b30f23d2ec |
| Rights: | IUCr Copyright and Licensing Policy |
| Prístupové číslo: | edsair.doi.dedup.....9fa32161b35e8e958fcf28c97ff2094c |
| Databáza: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | This article reports on studies of the chemical alterations induced by synchrotron radiation at the calcite-ethanol interface, a simple model system for interfaces between minerals and more complex organic molecules containing OH groups. A combination of X-ray reflectivity and X-ray photoelectron spectroscopy of natural calcite, cleaved in distilled ethanol to obtain new clean interfaces, indicated that, during a 5 h period, the two top atomic layers of calcite, CaCO(3), transform into calcium oxide, CaO, by releasing CO(2). Also, the occupation of the first ordered layer of ethanol attached to calcite by hydrogen bonds almost doubles. Comparison between radiated and non-radiated areas of the same samples demonstrate that these effects are induced only by radiation and not caused by aging. These observations contribute to establishing a time limit for synchrotron experiments involving fluid-mineral interfaces where the polar OH group, as present in ethanol, plays a key role in their molecular structure and bonding. Also, the chemical evolution observed in the interface provides new insight into the behavior of some complex organic molecules involved in biomineralization processes. |
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| ISSN: | 16005775 09090495 |
| DOI: | 10.1107/s0909049512021504 |