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Title

Defects on a pyrite(100) surface produce chemical evolution of glycine under inert conditions: Experimental and theoretical approaches

AuthorsGálvez Martínez, Santos; Escamilla-Roa, E. CSIC ORCID; Zorzano, María Paz CSIC ORCID ; Mateo-Martí, Eva CSIC ORCID
Issue Date28-Nov-2019
PublisherRoyal Society of Chemistry (UK)
CitationPhysical Chemistry Chemical Physics 21(44): 24535-24542 (2019)
AbstractThe presence of non-stoichiometric sites on the pyrite(100) surface makes it a suitable substrate for driving the chemical evolution of the amino acid glycine over time, even under inert conditions. Spectroscopic molecular fingerprints prove a transition process from a zwitterionic species to an anionic species over time on the monosulfide enriched surface. By combining experimental and theoretical approaches, we propose a surface mechanism where the interaction between the amino acid species and the surface will be driven by the quenching of the surface states at Fe sites and favoured by sulfur vacancies. This study demonstrates the potential capability of pyrite to act as a surface catalyst.
Publisher version (URL)http://dx.doi.org/10.1039/c9cp03577j
URIhttp://hdl.handle.net/10261/228155
Identifiersdoi: 10.1039/c9cp03577j
issn: 1463-9076
e-issn: 1463-9084
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