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A novel stable solid formed by C60 + oxygen at high P(O2)

Published online by Cambridge University Press:  03 March 2011

D.E. Morris ,
K.K. Singh  and
A.P.B. Sinha
D.E. Morris
Affiliation:
Morris Research Inc., 1918 University Avenue, Berkeley, California 94704
K.K. Singh
Affiliation:
Morris Research Inc., 1918 University Avenue, Berkeley, California 94704
A.P.B. Sinha
Affiliation:
Morris Research Inc., 1918 University Avenue, Berkeley, California 94704
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Abstract

We report the formation of a novel solid form of carbon + oxygen. Exposure of C60 to high oxygen pressure [P(O2) ≍ 100 MPa] for several days at slightly above ambient temperature results in absorption of significant amounts of oxygen (up to ∼48% by weight after 3 days). X-ray diffraction measurements showed that the C60 pellets had become amorphous. Although part of the added weight is slowly lost in flowing oxygen at ambient pressure and temperature, most remains up to at least 100 °C. Heating in flowing He at 200 °C brought the weight back to near the original value. The reaction appears to be specific to C60 since the amorphous outgassed material had lost the capacity to absorb oxygen at high P(O2), and the oxygen absorption effect was absent in powdered graphite and in commercial amorphous carbon. The Raman spectrum differs from those of C60, soot, amorphous carbon, graphite, and diamond.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 9 , September 1993 , pp. 2273 - 2276
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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