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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.13560 |
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| _version_ | 1866914953807527936 |
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| author | Kinikar, Amogh Xu, Xiushang Onishi, Takatsugu Ortega-Guerrero, Andres Widmer, Roland Zema, Nicola Hogan, Conor Camilli, Luca Persichetti, Luca Pignedoli, Carlo A. Fasel, Roman Narita, Akimitsu Di Giovannantonio, Marco |
| author_facet | Kinikar, Amogh Xu, Xiushang Onishi, Takatsugu Ortega-Guerrero, Andres Widmer, Roland Zema, Nicola Hogan, Conor Camilli, Luca Persichetti, Luca Pignedoli, Carlo A. Fasel, Roman Narita, Akimitsu Di Giovannantonio, Marco |
| contents | Recent advances in nanomaterials have pushed the boundaries of nanoscale fabrication to the limit of single atoms (SAs), particularly in heterogeneous catalysis. Single atom catalysts (SACs), comprising minute amounts of transition metals dispersed on inert substrates, have emerged as prominent materials in this domain. However, overcoming the tendency of these SAs to cluster beyond cryogenic temperatures and precisely arranging them on surfaces pose significant challenges. Employing organic templates for orchestrating and modulating the activity of single atoms holds promise. Here, we introduce a novel single atom platform (SAP) wherein atoms are firmly anchored to specific coordination sites distributed along carbon-based polymers, synthesized via on-surface synthesis (OSS). These SAPs exhibit atomiclevel structural precision and stability, even at elevated temperatures. The asymmetry in the electronic states at the active sites anticipates the enhanced reactivity of these precisely defined reactive centers. Upon exposure to CO and CO2 gases at low temperatures, the SAP demonstrates excellent trapping capabilities. Fine-tuning the structure and properties of the coordination sites offers unparalleled flexibility in tailoring functionalities, thus opening avenues for previously untapped potential in catalytic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_13560 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Advancing single-atom catalysts: engineered metal-organic platforms on surfaces Kinikar, Amogh Xu, Xiushang Onishi, Takatsugu Ortega-Guerrero, Andres Widmer, Roland Zema, Nicola Hogan, Conor Camilli, Luca Persichetti, Luca Pignedoli, Carlo A. Fasel, Roman Narita, Akimitsu Di Giovannantonio, Marco Materials Science Recent advances in nanomaterials have pushed the boundaries of nanoscale fabrication to the limit of single atoms (SAs), particularly in heterogeneous catalysis. Single atom catalysts (SACs), comprising minute amounts of transition metals dispersed on inert substrates, have emerged as prominent materials in this domain. However, overcoming the tendency of these SAs to cluster beyond cryogenic temperatures and precisely arranging them on surfaces pose significant challenges. Employing organic templates for orchestrating and modulating the activity of single atoms holds promise. Here, we introduce a novel single atom platform (SAP) wherein atoms are firmly anchored to specific coordination sites distributed along carbon-based polymers, synthesized via on-surface synthesis (OSS). These SAPs exhibit atomiclevel structural precision and stability, even at elevated temperatures. The asymmetry in the electronic states at the active sites anticipates the enhanced reactivity of these precisely defined reactive centers. Upon exposure to CO and CO2 gases at low temperatures, the SAP demonstrates excellent trapping capabilities. Fine-tuning the structure and properties of the coordination sites offers unparalleled flexibility in tailoring functionalities, thus opening avenues for previously untapped potential in catalytic applications. |
| title | Advancing single-atom catalysts: engineered metal-organic platforms on surfaces |
| topic | Materials Science |
| url | https://arxiv.org/abs/2409.13560 |