Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/173572
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Ultraviolet Irradiation on a Pyrite Surface Improves Triglycine Adsorption |
Autor: | Gálvez Martínez, Santos; Mateo-Martí, Eva CSIC ORCID | Director: | Sulfide mineral | Palabras clave: | Pyrite Triglycine Peptide UV Surface Adsorption Prebiotic chemistry |
Fecha de publicación: | 25-oct-2018 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Life 8(4): 50 (2018) | Resumen: | We characterized the adsorption of triglycine molecules on a pyrite surface under several simulated environmental conditions by X-ray photoemission spectroscopy. The triglycine molecular adsorption on a pyrite surface under vacuum conditions (absence of oxygen) shows the presence of two different states for the amine functional group (NH2 and NH3+), therefore two chemical species (anionic and zwitterionic). On the other hand, molecular adsorption from a solution discriminates the NH2 as a unique molecular adsorption form, however, the amount adsorbed in this case is higher than under vacuum conditions. Furthermore, molecular adsorption on the mineral surface is even favored if the pyrite surface has been irradiated before the molecular adsorption occurs. Pyrite surface chemistry is highly sensitive to the chemical changes induced by UV irradiation, as XPS analysis shows the presence of Fe2O3 and Fe2SO4—like environments on the surface. Surface chemical changes induced by UV help to increase the probability of adsorption of molecular species and their subsequent concentration on the pyrite surface. | Versión del editor: | https://doi.org/10.3390/life8040050 | URI: | http://hdl.handle.net/10261/173572 | DOI: | 10.3390/life8040050 | E-ISSN: | 2075-1729 |
Aparece en las colecciones: | (CAB) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
life-08-00050.pdf | 1,84 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
2
checked on 06-abr-2024
SCOPUSTM
Citations
6
checked on 15-abr-2024
WEB OF SCIENCETM
Citations
5
checked on 24-feb-2024
Page view(s)
295
checked on 17-abr-2024
Download(s)
197
checked on 17-abr-2024