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| Autori principali: | , , , , , , |
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| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2025
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| Soggetti: | |
| Accesso online: | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/open.202500596 |
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Sommario:
- Bimetallic M 2 B Boride Nanoparticles: A Robust and Recyclable Platform for Dehydration‐Driven Condensation of Aldehydes Akram Ashouri Arezu Moradi Behzad Nasiri Somayeh Pourian Hossein Zamani Fatemeh Rezaei Amin Karimizadeh ChemistryOpen Metal borides (MBs) emerge as a versatile class of nanomaterials, featuring high stability and bifunctional Lewis‐acidic/basic active sites. Despite these properties, their applications in CN bond formation are less explored. Herein, we report the first systematic use of M 2 B‐type boride nanoparticles as efficient and magnetically recoverable catalysts for the condensation of aldehydes with p ‐toluenesulfonamide under mild conditions. The synthesized CoZnB‐NPs exhibit partially oxidized and hydroxylated surfaces with Lewis‐acidic (B/Zn) and Lewis‐basic (Co) sites, where the synergistic interaction between Co and Zn centers facilitates charge transfer and stabilizes reactive intermediates. A series of mono‐ and bimetallic boride NPs are synthesized via aqueous NaBH 4 reduction and comprehensively characterized by Fourier transform infrared spectroscopy (FT‐IR), field emission scanning electron microscopy (FE‐SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray spectroscopy (EDX), inductively coupled plasma optical emission spectroscopy (ICP‐OES), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), and vibrating sample magnetometry (VSM). CoZnB‐NPs achieve yields of up to 93% within 1 h using an optimal catalyst loading of 3 mg in toluene, and demonstrate excellent magnetic recoverability and stability. This study highlights MB‐NPs as a surface‐engineered, high‐performance platform for selective CN bond formation, providing insights into the design of bimetallic boride nanocatalysts for sustainable catalysis. 10.1002/open.202500596 http://creativecommons.org/licenses/by/4.0/