A Study of Fullerene Preparation Technique
Yu, Tao; Li, Jin-Chai; Cai, Feng-Xin; Fan, Xiang-Jun; Chen, Ming-Sheng Ye Rong; Wu, Wan; Xiao, Nian; Tian, De-Cheng; Zhao, Wen-Kuan; Fang, You-Ling; Kuang, Ai-Yan; Yu, Tao; Department of Physics, Wuhan University; Li, Jin-Chai; Department of Physics, Wuhan University; Cai, Feng-Xin; Department of Physics, Wuhan University; Department of Physics, Henan University; Fan, Xiang-Jun; Department of Physics, Wuhan University; Chen, Ming-Sheng Ye Rong; Department of Physics, Wuhan University; Wu, Wan; Department of Physics, Wuhan University; Xiao, Nian; Department of Physics, Wuhan University; Tian, De-Cheng; Department of Physics, Wuhan University; Zhao, Wen-Kuan; Department of Chemistry, Wuhan University; Fang, You-Ling; Department of Chemistry, Wuhan University; Kuang, Ai-Yan; Department of Chemistry, Wuhan University
Журнал:
Fullerene Science and Technology
Дата:
1994
Аннотация:
AbstractA new homemade are fullerene generator used in this experiment is reported. The comparation of yields of fullerenes (C<sub>60</sub>/C<sub>70</sub> mixture) was studied by different power supplies (AC and DC), different gaps of two graphite rods and different He pressure between 0.4×10<sup>4</sup>- 2.8×10<sup>4</sup> Pa. In our experiment, the highest yield up to 13% was achieved, when DC discharge was used and the optimum He pressure was near 0.8×10<sup>4</sup> - 1.6×10<sup>4</sup> Pa.The mixed fullerene was analyzed by electron impact masa spectnun (EIMS). The relative amount af C<sub>60</sub> to C<sub>70</sub> was 4.2 to 1. After column chromatography aeperation with hexane on alumina, 99.9% Cso was obtained. FTIR and <sup>1a</sup>C-NMR epectrum were ueed to characterize the pure C<sub>60</sub> samples.
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