Journal
NATURE CHEMISTRY
Volume 9, Issue 2, Pages 120-127Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.2607
Keywords
-
Categories
Funding
- University of California, Riverside
- National Science Foundation (NSF) [CHE-1301019]
- NSF [CBET-1159240, DMR-0723032]
- Synchrotron Catalysis Consortium, US Department of Energy Grant [DE-SC0012335]
- Directorate For Engineering [1159240] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys [1159240] Funding Source: National Science Foundation
Ask authors/readers for more resources
The optimization of supported metal catalysts predominantly focuses on engineering the metal site, for which physical insights based on extensive theoretical and experimental contributions have enabled the rational design of active sites. Although it is well known that supports can influence the catalytic properties of metals, insights into how metal-support interactions can be exploited to optimize metal active-site properties are lacking. Here we utilize in situ spectroscopy and microscopy to identify and characterize a support effect in oxide-supported heterogeneous Rh catalysts. This effect is characterized by strongly bound adsorbates (HCOx) on reducible oxide supports (TiO2 and Nb2O5) that induce oxygen-vacancy formation in the support and cause HCOx-functionalized encapsulation of Rh nanoparticles by the support. The encapsulation layer is permeable to reactants, stable under the reaction conditions and strongly influences the catalytic properties of Rh, which enables rational and dynamic tuning of CO2-reduction selectivity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available