Carbon nanotubes from renewable feedstocks: A move toward sustainable nanofabrication

Abstract

A recent development in the manufacturing of carbon nanotubes is the usage of renewable feedstocks as a carbon source. This new development is receiving much support and is a source of excitement among the global research communities due to the positive environmental impacts, reduced carbon footprints, and economic benefits. Various types of renewable feedstocks such as vegetable oils, plant derivatives, and other types of biomasses have been used for the green synthesis of carbon nanotubes by employing conventional fabrication techniques. As the global demand increases for green manufacturing, efforts to synthesize carbon nanotubes from renewable resources are receiving immense attention while also strengthening the concept of biorefinery. This also enables the efficient use of resources as well as improved waste management. The present review summarizes the recent developments and current status of the synthesis of carbon nanotubes using renewable feedstocks along with technical discussions, opportunities for novel precursors, and future directions.

Microscopy and Spectroscopy Characterization of Carbon Nanotubes Grown at Different Temperatures Using Cyclohexanol as Carbon Source

“…It was confirmed that the formed CNTs were present with a few walls (MWCNTs) and showed a homogeneous structure. For the lower and higher temperatures, the organization of the graphite walls is compromised, the sizes of the iron nanoparticle impurities increase, and the few-wall CNTs present high structural defects [15,16]. is behavior can be contrasted to the use of aromatic compounds, where to the best of our knowledge, no one has reported the reason why they lead better product than alcohols.…”

“…ese frequencies correspond to a splitting of the graphite extension mode (stretching mode) [7,[13][14][15][16]. A second-order vibration mode between 2450 cm −1 and 2650 cm −1 is assigned to the first on-tone mode and to the D mode, also called G' (2D) [21,22].…”

Carbon Dioxide–Derived Poly(propylene carbonate) as a Matrix for Composites and Nanocomposites: Performances and Applications

“…Carbonaceous nanofillers including graphene oxide, graphite nanoplatelets, multiwall carbon nanotubes, and carbon black have been extensively used to produce nanocomposites because of their unique physicochemical, thermal, mechanical, and electrical properties . These carbonaceous nanofillers were also incorporated into PPC matrix to obtain nanocomposites for various applications.…”

Carbon Nanotube Fabrication at Industrial Scale

“…Eco friendly: Effect of CNT synthesis methods on environment [221] is a matter of concern considering the hazardous gas emission [222] from the reactor during the process. To comply with the environmental concerns the synthesis must be performed with renewable materials [223] to achieve environment friendly [224] green synthesis [225] with reduced energetic cost [226]. In order to protect the environment from a rapid degradation, industrial-scale production of CNTs should be carried out with sustainable technology and fossil fuel-based CNT production must be terminated.…”