skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reversing Size-Dependent Trends in the Oxidation of Copper Clusters through Support Effects [Controlling the Degree of Oxidation of Copper Clusters Through Size and Support Effects]

Abstract

Having the ability to tune the oxidation state of Cu nanoparticles is essential for their utility as catalysts. The degree of oxidation that maximizes product yield and selectivity is known to vary, depending on the particular reaction. Using first principles calculations and XANES measurements, we show that for sub-nanometer sizes in the gas phase, smaller Cu clusters are more resistant to oxidation. However, this trend is reversed upon deposition on an alumina support. We are able to explain this result in terms of strong cluster-support interactions, which differ significantly for the oxidized and elemental clusters. The stable cluster phases also feature novel oxygen stoichiometries. Finally, our results suggest that one can tune the degree of oxidation of Cu catalysts by optimizing not just their size, but also the support they are deposited on.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1]
  1. Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore (India)
  2. Shell India Markets Private Limited, Bangalore (India)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); The Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1459668
Alternate Identifier(s):
OSTI ID: 1414803
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
European Journal of Inorganic Chemistry
Additional Journal Information:
Journal Volume: 2018; Journal Issue: 1; Journal ID: ISSN 1434-1948
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; X-ray absorption spectroscopy; ab initio calculations; copper; nanoparticles; oxidation; reduction; clusters

Citation Formats

Mammen, Nisha, Spanu, Leonardo, Tyo, Eric C., Yang, Bing, Halder, Avik, Seifert, Sonke, Pellin, Michael J., Vajda, Stefan, and Narasimhan, Shobhana. Reversing Size-Dependent Trends in the Oxidation of Copper Clusters through Support Effects [Controlling the Degree of Oxidation of Copper Clusters Through Size and Support Effects]. United States: N. p., 2017. Web. doi:10.1002/ejic.201701355.
Mammen, Nisha, Spanu, Leonardo, Tyo, Eric C., Yang, Bing, Halder, Avik, Seifert, Sonke, Pellin, Michael J., Vajda, Stefan, & Narasimhan, Shobhana. Reversing Size-Dependent Trends in the Oxidation of Copper Clusters through Support Effects [Controlling the Degree of Oxidation of Copper Clusters Through Size and Support Effects]. United States. doi:10.1002/ejic.201701355.
Mammen, Nisha, Spanu, Leonardo, Tyo, Eric C., Yang, Bing, Halder, Avik, Seifert, Sonke, Pellin, Michael J., Vajda, Stefan, and Narasimhan, Shobhana. Tue . "Reversing Size-Dependent Trends in the Oxidation of Copper Clusters through Support Effects [Controlling the Degree of Oxidation of Copper Clusters Through Size and Support Effects]". United States. doi:10.1002/ejic.201701355.
@article{osti_1459668,
title = {Reversing Size-Dependent Trends in the Oxidation of Copper Clusters through Support Effects [Controlling the Degree of Oxidation of Copper Clusters Through Size and Support Effects]},
author = {Mammen, Nisha and Spanu, Leonardo and Tyo, Eric C. and Yang, Bing and Halder, Avik and Seifert, Sonke and Pellin, Michael J. and Vajda, Stefan and Narasimhan, Shobhana},
abstractNote = {Having the ability to tune the oxidation state of Cu nanoparticles is essential for their utility as catalysts. The degree of oxidation that maximizes product yield and selectivity is known to vary, depending on the particular reaction. Using first principles calculations and XANES measurements, we show that for sub-nanometer sizes in the gas phase, smaller Cu clusters are more resistant to oxidation. However, this trend is reversed upon deposition on an alumina support. We are able to explain this result in terms of strong cluster-support interactions, which differ significantly for the oxidized and elemental clusters. The stable cluster phases also feature novel oxygen stoichiometries. Finally, our results suggest that one can tune the degree of oxidation of Cu catalysts by optimizing not just their size, but also the support they are deposited on.},
doi = {10.1002/ejic.201701355},
journal = {European Journal of Inorganic Chemistry},
number = 1,
volume = 2018,
place = {United States},
year = {Tue Dec 05 00:00:00 EST 2017},
month = {Tue Dec 05 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on December 5, 2018
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share: