How to switch from a tip to base growth mechanism in carbon nanotube growth by catalytic chemical vapour deposition
Source abstract
Abstract
Abstract The catalytic growth of carbon nanotubes is performed at 580 °C with iron catalyst using a hot-wall CVD technique. It is shown that the growth mode can be switched from ‘tip’ to ‘base’ growth mode by an insertion of plasma pre-treatment of catalyst at room temperature before growth. To understand this phenomenon, the oxidation state of catalyst is compared using XPS before and after the pre-treatment. Growth mechanisms induced by different oxidation states of catalyst are proposed to explain the switching of the growth mode. A thermodynamic calculation shows the relation between induced growth mode and resulting CNT diameter.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Thermal properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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