Phenanthroline-functionalized graphene as a ligand platform for single-atom catalysis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73631922" target="_blank" >RIV/61989592:15640/25:73631922 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/25:10258743 RIV/61989100:27640/25:10258743
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0920586125003116?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586125003116?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2025.115493" target="_blank" >10.1016/j.cattod.2025.115493</a>
Alternative languages
Result language
angličtina
Original language name
Phenanthroline-functionalized graphene as a ligand platform for single-atom catalysis
Original language description
The precise anchoring of single metal atoms on solid supports remains a key challenge in the design of singleatom catalysts (SACs), particularly for carbon-based materials where metal coordination environments are often poorly defined. We report a graphene-based support covalently functionalized with 1,10-phenanthroline-5amine groups via nucleophilic substitution on fluorographene in DMSO. This approach introduces well-defined chelating sites that enable the rational and selective immobilization of transition metals. A copper-based SAC was synthesized by impregnating the functionalized graphene with a CuCl2 solution. Spectroscopic and microscopic analyses confirmed the formation of atomically dispersed Cu(I) species coordinated by phenanthroline ligands, with no detectable nanoparticle formation. The resulting catalyst exhibited high activity in the Chan-Lam coupling of 1H-imidazole with phenylboronic acid, achieving a turnover frequency of 3.8 h- 1, and outperformed heterogeneous benchmark systems, including commercial CuO nanoparticles. However, recyclability tests revealed a decline in catalytic activity after four cycles, primarily due to the leaching of Cu-phenanthroline complexes. These findings demonstrate the potential of functionalized graphene as a platform for developing SACs with well-defined coordination environments. Nevertheless, enhancing catalyst stability, e.g., through secondary anchoring strategies, optimized metalation protocols, or post-synthetic stabilization, is needed for future industrial applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004587" target="_blank" >EH22_008/0004587: Technology Beyond Nanoscale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CATALYSIS TODAY
ISSN
0920-5861
e-ISSN
1873-4308
Volume of the periodical
460
Issue of the periodical within the volume
December
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
nestránkováno
UT code for WoS article
001578796700001
EID of the result in the Scopus database
2-s2.0-105012601155