Detailed Information
Cited time in 
Cited time in 
Cited time in
Metadata Downloads
Control of the surface atomic population of Rh
- Author(s)
- Bernardi, Fabiano, Grass, Michael E., Hong, Young P., Chang, Rui, Jabeen, Naila, Zhang, Chunjuan, Eichhorn, Bryan W., Seo, Bora, Alayoglu, Selim, Hussain, Zahid, Joo, Sang Hoon, Liu, Zhi
- Issued Date
- 2016-02
- Citation
- CATALYSIS TODAY, v.260, pp.95 - 99
- Abstract
- Rh0.5Pd0.5/CeO2 bimetallic nanoparticles were subjected to reducing and oxidizing atmospheres at different temperatures and characterized by means of the Ambient Pressure X-Ray Photoelectron Spectroscopy (AP-XPS). The surface atomic population is calculated for all cases. By using a high temperature pretreatment at 480 degrees C in H-2 atmosphere, it was possible to control the surface atomic population with Pd atoms frozen at the skin layer even in an oxidizing atmosphere, which is not observed without high temperature pre-treatment (Rh atoms at the skin layer). The change of the Rh/Pd surface segregation behavior after the high temperature pre-treatment is attributed to the geometrical factor of Strong Metal Support Interaction (SMSI) effect, i.e., the occurrence of the ceria capping layer around nanoparticles.
- Publisher
- ELSEVIER SCIENCE BV
- ISSN
- 0920-5861
- Keyword (Author)
- Strong metal support interaction, Bimetallic nanoparticles, AP-XPS, RhPd, CeO2
- Keyword
- RAY PHOTOELECTRON-SPECTROSCOPY, CATALYSTS, SEGREGATION, OXIDE, CERIA
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.