Carbon ARC Generation of C60

Springer Science and Business Media LLC - Tập 206 - Trang 627-637 - 1990
R. E. Haufler1, Y. Chai1, L. P. F. Chibante1, J. Conceicao1, Changming Jin1, Lai-Sheng Wang2, Shigeo Maruyama3, R. E. Smalley2
1Robert A. Welch Foundation Predoctoral Fellow, Houston, USA
2Rice Quantum Institute and Departments of Chemistry and Physics, Rice University, Houston, USA
3RQI Visiting Fellow, Department of Mechanical Engineering, University of Tokyo, Bunko-ku, Japan

Tóm tắt

Generation of C60 at a rate of more than 10 grams per day has been accomplished by operation of a carbon arc in an atmosphere of helium. Optimum yield of 15% was found to occur near 100‐200 torr, but yields greater than 3% were found throughout the range between 50 and 760 torr. A model is proposed to explain the observed behavior based on competition between annealing of graphitic sheets to curve so that they minimize dangling bonds, and further rapid growth of these sheets in the gas phase to form giant fullerenes. In agreement with predictions of this model, laser vaporization of graphite targets was found to produce macroscopic quantities of C60 only when performed in an oven above 1000 C.

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Springer Science and Business Media LLC

Tập 206

627-637

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