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NMR of Small Platinum Particles

Published online by Cambridge University Press:  15 February 2011

Harold T. Stokes ,
Howard E. Rhodes ,
Po-Kang Wang ,
Charles P. Slicuter  and
J. H. Sinfelt
Harold T. Stokes
Affiliation:
Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
Howard E. Rhodes
Affiliation:
Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
Po-Kang Wang
Affiliation:
Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
J. H. Sinfelt
Affiliation:
Exxon Research and Engineering Company, Linden, New Jersey 07036
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Abstract

We present 195Pt NMR lineshapes as well as relaxation data in three different samples of platinum metal particles (46%, 26%, and 15% dispersion) supported on alumina. We show that the electronic properties of these particles are very much different from those of bulk Pt metal. A prominent peak in the lineshape has been identified as a “surface resonance” which arises from Pt nuclei on the surface of the Pt particles. We find that these surface Pt atoms are “nonmetallic” when coated with adsorbed molecules.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 3: Symposium – Nuclear and Electron Resonance Spectroscopies Applied to Materials Science , 1980 , 253
Copyright
Copyright © Materials Research Society 1981

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References

REFERENCES

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