The decomposition of C{sub 60} on nickel clusters

Journal Article · Tue Feb 01 04:00:00 EST 2000 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.480813· OSTI ID:20215183

Parks, E K ^[1]; Kerns, K P ^[1]; Koretsky, G M ^[1]; Nieman, G C ^[1]; Riley, S J ^[1]

---

1. Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The adsorption of C{sub 60} on nickel clusters Ni{sub n} in the n=8-31 size range is studied at elevated temperatures. Above 800 degree sign C, decomposition of C{sub 60} is seen on clusters containing oxide impurities by the loss of CO and/or CO{sub 2} molecules. The extent of decomposition depends on cluster size and C{sub 60} coverage, which affect the charging of the metal core by electron transfer from the metal to the C{sub 60}. Both decreased cluster size and increased C{sub 60} coverage reduce the electron transfer per C{sub 60} molecule, weakening the C{sub 60}-Ni{sub n} bond and decreasing the rate of decomposition. In spite of this effect, C{sub 60} appears to decompose more readily on small nickel clusters than on bulk nickel surfaces. While decomposition is only observed for clusters having adsorbed O atoms, the oxygen may actually inhibit decomposition by withdrawing electronic charge from the metal, likewise weakening the C{sub 60}-Ni{sub n} bond. (c) 2000 American Institute of Physics.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• OSTI ID: 20215183
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 5 Vol. 112; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ATOMIC CLUSTERS
DESORPTION
ELECTRON TRANSFER
EXPERIMENTAL DATA
FULLERENES
NICKEL
OXIDATION
PYROLYSIS
SURFACES
TEMPERATURE RANGE 1000-4000 K