Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles
Tao, Feng1,2; Grass, Michael E.1,2; Zhang, Yawen1,2,5; Butcher, Derek R.1,2; Renzas, James R.1,2; Liu, Zhi1,3; Chung, Jen Y.3; Mun, Bongjin S.3; Salmeron, Miquel1,4; Somorjai, Gabor A.1,2
Source PublicationSCIENCE

Heterogeneous catalysts that contain bimetallic nanoparticles may undergo segregation of the metals, driven by oxidizing and reducing environments. The structure and composition of core- shell Rh0.5Pd0.5 and Pt0.5Pd0.5 nanoparticle catalysts were studied in situ, during oxidizing, reducing, and catalytic reactions involving NO, O-2, CO, and H-2 by x- ray photoelectron spectroscopy at near-ambient pressure. The Rh0.5Pd0.5 nanoparticles underwent dramatic and reversible changes in composition and chemical state in response to oxidizing or reducing conditions. In contrast, no substantial segregation of Pd or Pt atoms was found in Pt0.5Pd0.5 nanoparticles. The different behaviors in restructuring and chemical response of Rh0.5Pd0.5 and Pt0.5Pd0.5 nanoparticle catalysts under the same reaction conditions illustrates the flexibility and tunability of the structure of bimetallic nanoparticle catalysts during catalytic reactions.

Indexed BySCI
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000260674100043
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Cited Times:928[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorSalmeron, Miquel
Affiliation1.Univ Calif Berkeley, Lawrence Berkeley Lab, Mat Sci & Chem Sci Div, Berkeley, CA 94720 USA
2.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
3.Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA
4.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
5.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Tao, Feng,Grass, Michael E.,Zhang, Yawen,et al. Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles[J]. SCIENCE,2008,322(5903):932-934.
APA Tao, Feng.,Grass, Michael E..,Zhang, Yawen.,Butcher, Derek R..,Renzas, James R..,...&Somorjai, Gabor A..(2008).Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles.SCIENCE,322(5903),932-934.
MLA Tao, Feng,et al."Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles".SCIENCE 322.5903(2008):932-934.
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