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Analysis of institutional authors

Anemone, GAuthorAl Taleb A.AuthorFarias, DCorresponding Author

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December 1, 2025
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Green Hydrogen Production via Water Splitting Using SrFe0.9Mo0.1O3-δ Perovskite as a Catalyst

Publicated to: Small Structures. 6 (12): - 2025-12-01, DOI: 10.1002/sstr.202500544

Authors:

Anemone, G; Azcondo, MT; Muñóz-Noval, A; Al Taleb, A; Rubio-Zuazo, J; Farías, D; Amador, U
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Affiliations

CSIC, Inst Ciencia Mat Madrid, Sor Juana Ines Cruz 3 - Author
CUNEF Univ, Dept Matemat - Author
IMDEA Nanociencia, Faraday 9 - Author
Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC - Author
Univ Autonoma Madrid, Dept Fis Mat Condensada - Author
Univ San Pablo CEU, CEU Univ, Fac Farm, Dept Quim & Bioquim - Author
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Abstract

Evidence of hydrogen production from water splitting using a nonstoichiometric cubic perovskite, SrFeMoO (SFMO), as a catalyst under moderate operating condition is presented. It is demonstrated that the SFMO oxide, when reduced at 800 degrees C in air, can dissociate water to produce hydrogen and oxygen at the same temperature. The direct test of water dissociation with consequent hydrogen production is carried out using quadrupole mass spectrometry (QMS) under ultrahigh vacuum conditions, where the production of hydrogen by the material is unambiguously determined using heavy water. In addition, in operando synchrotron X-ray diffraction and X-ray absorption spectroscopy are employed to track structural and electronic changes during the reaction, revealing a reversible unit cell expansion without oxygen incorporation and indicating a nonredox mechanism distinct from that of conventional perovskites. This combined characterization approach enables correlation between gas-phase evolution and the structural and electronic response of the catalyst. The reaction cycle could be repeated several times without any decomposition, segregation, or irreversible structural changes, demonstrating the high stability of SFMO. These findings highlight SFMO as a robust and stable catalyst for sustainable hydrogen generation, with strong potential for integration into solar-driven water splitting technologies.
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Keywords

CatalysisGreen hydrogenNonstoichiometric perovskitesWater-splitting

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Small Structures due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position 90/473, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-11-10:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 6.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 6 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 34.
  • The number of mentions on the social network X (formerly Twitter): 2 (Altmetric).
  • The number of mentions in news outlets: 4 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: France.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (ANEMONE, GLORIA) .

the author responsible for correspondence tasks has been FARIAS TEJERINA, DANIEL.

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Project objectives

La aportación persigue los siguientes objetivos: analizar la capacidad del perovskita SrFe0.9Mo0.1O3-δ (SFMO) como catalizador para la producción de hidrógeno mediante la escisión del agua bajo condiciones moderadas; evaluar la producción directa de hidrógeno utilizando espectrometría de masas de cuadrupolo (QMS) con agua pesada; determinar los cambios estructurales y electrónicos del SFMO durante la reacción mediante difracción de rayos X y espectroscopía de absorción en sincrotrón in operando; caracterizar la estabilidad y reversibilidad del material tras múltiples ciclos de reacción a 800 °C; y establecer el mecanismo no redox del SFMO, diferenciándolo de perovskitas convencionales, con vistas a su aplicación en tecnologías solares para generación sostenible de hidrógeno.
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Most relevant results

El estudio presenta resultados clave sobre la producción de hidrógeno mediante la escisión de agua utilizando el perovskita SrFe0.9Mo0.1O3-δ (SFMO) como catalizador. Se demuestra que SFMO reducido a 800 °C en aire puede disociar agua para generar hidrógeno y oxígeno a la misma temperatura. La producción directa de hidrógeno se confirma mediante espectrometría de masas de cuadrupolo (QMS) bajo vacío ultrahondo usando agua pesada. La difracción de rayos X y espectroscopía de absorción in operando revelan una expansión reversible de la celda unitaria sin incorporación de oxígeno, indicando un mecanismo no redox. El ciclo de reacción se repite varias veces sin descomposición ni cambios estructurales irreversibles, evidenciando la alta estabilidad del catalizador SFMO.
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