Back to Search
Start Over
Anchoring of palladium nanoparticles on N-doped mesoporous carbon.
- Source :
- Physical Chemistry Chemical Physics (PCCP); 10/7/2020, Vol. 22 Issue 37, p21317-21325, 9p
- Publication Year :
- 2020
-
Abstract
- Pd nanoparticles deposited on nitrogen-doped mesoporous carbon are promising catalysts for highly selective and effective catalytic hydrogenation reactions. To design and utilize these novel catalysts, it is essential to understand the effect of N doping on the metal–support interactions. A combined experimental (X-ray photoelectron spectroscopy) and computational (density functional theory) approach is used to identify preferential adsorption sites and to give detailed explanations of the corresponding metal–support interactions. Pyridinic N atoms turned out to be the preferential adsorption sites for Pd nanoparticles on nitrogen-doped mesoporous carbon, interacting through their lone pairs (LPs) with the Pd atoms via N-LP – Pd d<subscript>σ</subscript> and N-LP – Pd s and Pd d<subscript>π</subscript> – π* charge transfer, which leads to a change in the Pd oxidation state. Our results evidence the existence of bifunctional palladium nanoparticles containing Pd<superscript>0</superscript> and Pd<superscript>2+</superscript> centers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639076
- Volume :
- 22
- Issue :
- 37
- Database :
- Complementary Index
- Journal :
- Physical Chemistry Chemical Physics (PCCP)
- Publication Type :
- Academic Journal
- Accession number :
- 146177129
- Full Text :
- https://doi.org/10.1039/d0cp03234d