Abstract
The aim of this work is to analyze the conditions for producing water assisted carbon nanotubes (WA-CNT) forests by varying parameters that include growth temperature; de-ionized (DI) water flow; carbon-containing gas flow; and thereby determine the length, impurities and catalyst utilization in the CNT forest. Most importantly, the impact of water molecules on the length and catalyst utilization of the CNT forest was investigated. The CNT forests with lengths up to 140 microns were grown using a chemical vapor deposition technique at atmospheric pressure. The forest bundles had weak adhesion with the substrate which allows them to be peeled off easily, enabling easy transfer to other substrates. The characterization of CNT forest were carried out using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and high-resolution transmission electron microscopy (HR-TEM) techniques.
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