TY - JOUR
T1 - Internal structure and stability of carbon nanoclusters
T2 - Arc discharge preparation versus CO disproportionation
AU - Jiao, Jun
AU - Seraphin, Supapan
N1 - Funding Information:
The authors would like to thank D.C. Lynch, A.H. Cutler, and P.E. Nolan for providing CO disproportionation samples, and for stimulating discussions. Thanks also go to J.C. Withers of the Materials Electrochemical Research Corp., Tucson, Arizona for the preparation of arc discharge samples. Financial support for this work was provided by the National Science Foundation, Grants DMR 9302353 and DMR 9311302 and by the Alfred P. Sloan Foundation.
PY - 1996/1/26
Y1 - 1996/1/26
N2 - Carbon nanoclusters prepared at high temperature by arc discharge, and at low temperature by CO disproportionation with and without hydrogen present, were compared in their morphology, internal structures, and stability. Electron microscopy shows similar external morphology in the three different sample types, with the internal structures different depending on the preparation conditions. These differences result in different stabilities. Nanotubes of cylindrical structure are stable to annealing at 1000°C in both helium and hydrogen atmosphere. Two-minute electron bombardment disordered tubes slightly. However, filaments of conical fishbon structure deposited in the presence of hydrogen, significantly deform under the same conditions.
AB - Carbon nanoclusters prepared at high temperature by arc discharge, and at low temperature by CO disproportionation with and without hydrogen present, were compared in their morphology, internal structures, and stability. Electron microscopy shows similar external morphology in the three different sample types, with the internal structures different depending on the preparation conditions. These differences result in different stabilities. Nanotubes of cylindrical structure are stable to annealing at 1000°C in both helium and hydrogen atmosphere. Two-minute electron bombardment disordered tubes slightly. However, filaments of conical fishbon structure deposited in the presence of hydrogen, significantly deform under the same conditions.
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U2 - 10.1016/0009-2614(95)01320-2
DO - 10.1016/0009-2614(95)01320-2
M3 - Article
AN - SCOPUS:0030602366
SN - 0009-2614
VL - 249
SP - 92
EP - 100
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -