The Production of CNT Flower-Like Structures with 3-Fold and 4-Fold Symmetries on a Pt/Si Substrate

Madjid Arab, Marjorie David, Jean-Christophe Valmalette, Christophe Ramseyer

Université du Sud Toulon Var, IM2NP UMR CNRS, La Garde, France.
Université Franche-Comté, UE, La Bouloie, Besan?on, France.

DOI: 10.4236/aces.2013.31009                

Abstract

Carbon nanotubes flower (CNTs-F) films were prepared by catalytic chemical vapor deposition (CVD) on a platinum (Pt) thin layer, supported on a silicon wafer. The products were synthesized from an aerosol composed of ferrocene and toluene, as catalyst and carbon precursor respectively, at 820. The high synthesis temperature induces a modification of a Pt thin layer to a nano-structured island giving rise to the formation of CNTs-F during the following films growth step by CVD process. The suggested mechanism involves the selective diffusion of the catalyst and carbon atoms through the Pt grain boundaries. This results in the appearance of flower-like structures with 3-and 4-fold symmetries.

Keywords

Carbon Nanotube; Aerosol-CVD; 3-Fold and 4-Fold Symmetries; Flower Shape

Conflicts of Interest

The authors declare no conflicts of interest.

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