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Title: Stabilization of Oxidized Copper Nanoclusters in Confined Spaces

Journal Article · · Topics in Catalysis
 [1];  [1];  [2];  [2];  [3];  [2];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Stony Brook Univ., NY (United States)

Copper is an important industrial catalyst. The ability to manipulate the oxidation state of copper clusters in a controlled way is critical to understanding structure–reactivity relations of copper catalysts at the molecular level. Experimentally, cupric oxide surfaces or even small domains can only be stabilized at elevated temperatures and in the presence of oxygen, as copper can be easily reduced under reaction conditions. Herein bilayer silica films grown on a metallic substrate are used to trap diluted copper oxide clusters. By combining in situ experiments with first principles calculations, it is found that the confined space created by the silica film leads to an increase in the energy barrier for Cu diffusion. Dispersed copper atoms trapped by the silica film can be easily oxidized by surface oxygen chemisorbed on the metallic substrate, which results in the formation and stabilization of Cu2+ cations.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1425038
Report Number(s):
BNL-200027-2018-JAAM
Journal Information:
Topics in Catalysis, Vol. 61, Issue 5-6; ISSN 1022-5528
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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  • Xu, Xueping; Vesecky, S. M.; He, J. ‐W.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 11, Issue 4 https://doi.org/10.1116/1.578525
journal July 1993
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Cited By (1)

Ionization‐Facilitated Formation of 2D (Alumino)Silicate–Noble Gas Clathrate Compounds journal March 2019

Figures / Tables (8)


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