Formation of single-wall carbon nanotubes catalyzed by Ni separating from Y in laser ablation or in arc discharge using a C target containing a NiY catalyst
M. Yudasaka et al., Formation of single-wall carbon nanotubes catalyzed by Ni separating from Y in laser ablation or in arc discharge using a C target containing a NiY catalyst, CHEM P LETT, 312(2-4), 1999, pp. 155-160
Single-wall carbon nanotubes (SWNT) were formed by laser ablation or are di
scharge using a C target containing Ni and Y, each with an atomic percentag
e of 0.3%. The carbonaceous deposit rich in SWNTs contained Ni and a small
quantity of Y. The carbonaceous deposit poor in SWNTs contained C, Ni and Y
, or C and Y. We concluded that the SWNT formation was catalyzed by Ni, but
not by Ni coexisting with Y or by Y itself. (C) 1999 Elsevier Science B.V.
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