Platinum-based nanocages with subnanometer-thick walls and well-defined, controllable facets
Georgia Institute of Technology · Xiamen University · +5 more institutions
Abstract
A cost-effective catalyst should have a high dispersion of the active atoms, together with a controllable surface structure for the optimization of activity, selectivity, or both. We fabricated nanocages by depositing a few atomic layers of platinum (Pt) as conformal shells on palladium (Pd) nanocrystals with well-defined facets and then etching away the Pd templates. Density functional theory calculations suggest that the etching is initiated via a mechanism that involves the formation of vacancies through the removal of Pd atoms incorporated into the outermost layer during the deposition of Pt. With the use of Pd nanoscale cubes and octahedra as templates, we obtained Pt cubic and octahedral nanocages…
Citation impact
- FWCI
- 39.69
- Percentile
- 100%
- References
- 36
Authors
12- LZLei Zhang
Georgia Institute of Technology, Xiamen University, The Wallace H. Coulter Department of Biomedical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials
- LTLuke T. Roling
University of Wisconsin–Madison
- XWXue Wang
Georgia Institute of Technology, Xiamen University, The Wallace H. Coulter Department of Biomedical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials
- MVMadeline Vara
Georgia Institute of Technology
- MCMiaofang Chi
Oak Ridge National Laboratory
Topics & keywords
- Nanocages
- Platinum
- Palladium
- Catalysis
- Materials science
- Nanocrystal
- Nanotechnology
- Chemical engineering