Engineering Catalytic Contacts and Thermal Stability: Gold/Iron Oxide Binary Nanocrystal Superlattices for CO Oxidation

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ID: 269766
2013
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Abstract
Well-defined surface, such as surface of a single crystal, is being used to provide precise interpretation of catalytic processes, while the nanoparticulate model catalyst more closely represents the real catalysts that are used in industrial processes. Nanocrystal superlattice, which combines the chemical and physical properties of different materials in a single crystalline structure, is an ideal model catalyst, that bridge between conventional models and real catalysts. We identify the active sites for carbon monoxide (CO) oxidation on Au-FeOx catalysts by using Au-FeOx binary superlattices correlating the activity to the number density of catalytic contacts between Au and FeOx. Moreover, using nanocrystal superlattices, we propose a general strategy of keeping active metals spatially confined to enhance the stability of metal catalysts. With a great range of nanocrystal superlattice structures and compositions, we establish that nanocrystal superlattices are useful model materials through which to explore, understand, and improve catalytic processes bridging the gap between traditional single crystal and supported catalyst studies.
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murray2013journalengineering Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yijin Kang,Xingchen Ye,Jun Chen,Liang Qi,Rosa E. Diaz,Vicky Doan-Nguyen,Guozhong Xing,Cherie R. Kagan,Ju Li,Raymond J. Gorte,Eric A. Stach,Christopher B. Murray;Yijin Kang;Xingchen Ye;Jun Chen;Liang Qi;Rosa E. Diaz;Vicky Doan-Nguyen;Guozhong Xing;Cherie R. Kagan;Ju Li;Raymond J. Gorte;Eric A. Stach;Christopher B. Murray;
Journal Journal of the American Chemical Society
Year 2013
DOI
10.1021/ja310427u
URL
https://sciprofiles.com/publication/view/e589f9cc9e0b4a33f6f5627257e2ab74
Keywords
Catalytic model structures binary feox nanocrystal superlattices

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