Please use this identifier to cite or link to this item: http://dspace.iitrpr.ac.in:8080/xmlui/handle/123456789/1576
Title: Catalytic-free growth of VACNTs for energy harvesting
Authors: Ghai, Viney
Bedi, Harpreet Singh
Bhinder, Jasdeep
Chauhan, Ankit
Singh, Harpreet
Agnihotri, Prabhat Kumar
Keywords: Carbon nanotubes
hexagonal
honeycomb network
absorption
UVVis- NIR
Issue Date: 29-Sep-2020
Abstract: The present study introduces a process to grow micro-honeycomb (m-HC) vertically aligned carbon nanotubes (VACNTs) using thermal chemical vapor deposition technique. Methane is used as a source of carbon and hydrogen gas as a reducing agent. Where, the fabricated m-HC structure reported in literature involves complex synthesis process and requires a catalyst layer, the novelty of the process used here lies in the fact that no catalyst layer is used for the growth of CNT network, rather copper foil is used as a substrate. The in-situ cracking of CNTs due to water treatment leads to the formation of m-HC CNT network, which is confirmed by Raman spectroscopy. Further scanning electron microscopy analysis shows that the length of developed m-HC CNT is 5 mm. Hexagonal m-HC network shows more than 94% absorption in UV-Vis-NIR wavelength region. The designed process provides high-yield with a low-cost synthesis of vertically aligned CNTs having 3D microarchitecture. The fabricated CNT network can be used as an electrode for supercapacitor, as an active layer in a photovoltaic cell and most of the energy harvesting devices.
URI: http://localhost:8080/xmlui/handle/123456789/1576
Appears in Collections:Year-2020

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