Nano carbon hybrids from the simultaneous synthesis of CNT/NCD by MPCVD


A carbon hybrid composed by nanocrystalline diamond (NCD) and carbon nanotubes (CNT) was successfully synthesized by microwave plasma chemical vapor deposition (MPCVD), assisted by a continuous delivery of a Fe catalyst. This way, both carbon forms were grown simultaneously, originating a composite structure mainly formed by nanodiamond conglomerates well interconnected by multiwall carbon nanotubes. NCD clusters often develop at the crossing points of different CNTs. A good NCD/CNT mechanical link is predicted based on the observation of carbon nanotubes penetrating and/or involving isolated nanocrystalline diamond clusters. The overall appearance of the NCD/CNT material resembles that of a 2D neuronal network. The nanocrystalline diamond and carbon nanotube phases were structurally confirmed by mu-Raman spectroscopy, the morphological features were characterized by SEM and EDS was used to appraise the catalyst surface distribution. (C) 2008 Elsevier B.V. All rights reserved.



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Materials Science


Fernandes, AJS; Pinto, M; Neto, MA; Oliveira, FJ; Silva, RF; Costa, FM

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