Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach
Abstract Precious metal nanoparticles in electrocatalytic applications tend to be single‐use, becoming unusable afterward. Here, this is demonstrated that the electrocatalytic response of these nanoparticles, when confined at the step‐edges of corrugated carbon nanofibers interiors, can be switched...
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| Format: | Article |
| Language: | English |
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Wiley
2025-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202505104 |
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| author | Carlos Herreros‐Lucas Melanie Guillén‐Soler Lucía Vizcaíno‐Anaya Glen Murray Mehtap Aygün José Manuel Vila‐Fungueiriño María del Carmen Giménez‐López |
| author_facet | Carlos Herreros‐Lucas Melanie Guillén‐Soler Lucía Vizcaíno‐Anaya Glen Murray Mehtap Aygün José Manuel Vila‐Fungueiriño María del Carmen Giménez‐López |
| author_sort | Carlos Herreros‐Lucas |
| collection | DOAJ |
| description | Abstract Precious metal nanoparticles in electrocatalytic applications tend to be single‐use, becoming unusable afterward. Here, this is demonstrated that the electrocatalytic response of these nanoparticles, when confined at the step‐edges of corrugated carbon nanofibers interiors, can be switched on again at will by simply introducing sulfur as an inorganic mediator. To achieve this, an electrochemical methodology is developed that triggers the rapid surface reconfiguration of confined, deactivated nanoparticles (PdSx) involving the release of sulfur to yield highly active crystalline Pd(0) nanoparticles, confined polysulfides, and sulfur‐terminated carbon step‐edges. More importantly, the electrochemical performance can be systematically switched from a highly active mode, in which polysulfides enhance the hydrogen adsorption on palladium, to a much less active mode, called the resting mode, in which sulfur (formed by the oxidation of polysulfides) passivates the active Pd(0) nanoparticle surface. This discovery introduces a new protocol to control nanoparticle performance for catalytic reactions, and more crucially, to extend their lifespan. |
| format | Article |
| id | doaj-art-a345b99d945d4cc6aab879acd8233fa8 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-a345b99d945d4cc6aab879acd8233fa82025-08-20T11:56:11ZengWileyAdvanced Science2198-38442025-08-011230n/an/a10.1002/advs.202505104Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical ApproachCarlos Herreros‐Lucas0Melanie Guillén‐Soler1Lucía Vizcaíno‐Anaya2Glen Murray3Mehtap Aygün4José Manuel Vila‐Fungueiriño5María del Carmen Giménez‐López6Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainCentro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainCentro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainSchool of Chemistry The University of Nottingham University Park Nottingham NG7 2RD UKCentro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainCentro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainCentro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Universidade de Santiago de Compostela Santiago deCompostela 15782 SpainAbstract Precious metal nanoparticles in electrocatalytic applications tend to be single‐use, becoming unusable afterward. Here, this is demonstrated that the electrocatalytic response of these nanoparticles, when confined at the step‐edges of corrugated carbon nanofibers interiors, can be switched on again at will by simply introducing sulfur as an inorganic mediator. To achieve this, an electrochemical methodology is developed that triggers the rapid surface reconfiguration of confined, deactivated nanoparticles (PdSx) involving the release of sulfur to yield highly active crystalline Pd(0) nanoparticles, confined polysulfides, and sulfur‐terminated carbon step‐edges. More importantly, the electrochemical performance can be systematically switched from a highly active mode, in which polysulfides enhance the hydrogen adsorption on palladium, to a much less active mode, called the resting mode, in which sulfur (formed by the oxidation of polysulfides) passivates the active Pd(0) nanoparticle surface. This discovery introduces a new protocol to control nanoparticle performance for catalytic reactions, and more crucially, to extend their lifespan.https://doi.org/10.1002/advs.202505104confined electrocatalystelectrochemical switchinghydrogen productionreconfigurable step‐edge |
| spellingShingle | Carlos Herreros‐Lucas Melanie Guillén‐Soler Lucía Vizcaíno‐Anaya Glen Murray Mehtap Aygün José Manuel Vila‐Fungueiriño María del Carmen Giménez‐López Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach Advanced Science confined electrocatalyst electrochemical switching hydrogen production reconfigurable step‐edge |
| title | Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach |
| title_full | Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach |
| title_fullStr | Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach |
| title_full_unstemmed | Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach |
| title_short | Adaptive Catalytic Nanointerfaces for Controlled Hydrogen Evolution: an in Situ Electrochemical Approach |
| title_sort | adaptive catalytic nanointerfaces for controlled hydrogen evolution an in situ electrochemical approach |
| topic | confined electrocatalyst electrochemical switching hydrogen production reconfigurable step‐edge |
| url | https://doi.org/10.1002/advs.202505104 |
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