C–C Coupling Reactions Catalyzed by Gold Nanoparticles: Evidence for Substrate-Mediated Leaching of Surface Atoms Using Localized Surface Plasmon Resonance Spectroscopy
| Autor: | C. Ozge Topal, Ravi Teja Addanki Tirumala, Sayeed Mohammad, Marimuthu Andiappan, Andishaeh P. Dadgar, A. Kaan Kalkan, Farshid Mohammadparast |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanostructure Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Coupling reaction Nanomaterial-based catalyst 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis General Energy Colloidal gold Physical and Theoretical Chemistry Surface plasmon resonance 0210 nano-technology Spectroscopy |
| Zdroj: | The Journal of Physical Chemistry C. 123:11539-11545 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Heterogeneous metal nanocatalysts have recently emerged as attractive catalysts for a variety of couplings (e.g., C–C, C–N, C–S, C–O, etc.). However, the characterization of the catalytic pathway remains challenging. By exploiting localized surface plasmon resonance (LSPR) of the catalytically relevant gold (Au) nanostructure, we show that UV–vis spectroscopy can be used to confirm the homogeneous catalytic pathway. Specifically, we have demonstrated that Au nanoparticles under C–C coupling conditions undergo substrate-induced leaching to form homogeneous Au catalytic species. The LSPR spectroscopic approach opens a new door to track stability of nanocatalysts and characterize the catalytic pathway in a range of coupling reactions. |
| Databáze: | OpenAIRE |
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