Abstract
Bamboo-like carbon nanotubes are members of the carbon nanotubes (CNTs) family, whose structure is made up of separated hollow compartments and bamboo knots. Due to the peculiar structure of the CNTs species, the growth mechanism and related features have been widely investigated. Bamboo-like carbon nanotubes are widely applied in several fields, such as sensors, adsorbents, catalysts, and lithium-ion battery electrodes materials. Different methods have been applied for the synthesis of carbon nanotubes, among them, catalytic chemical vapor deposition has been singled out as the most used procedure due to low cost with a high quality product. The present review is devoted to increasing the literature dealing with the design, synthesis, and characterization of bamboo-like carbon nanotubes grown over different catalysts. Results on the methane dry reforming reaction, hydrocarbon thermal decomposition, special chemical vapor deposition as well as other methods applied to the preparation of bamboo-like carbon nanotubes are discussed. The differences in the carbon deposits between the dry reforming reaction and other reaction methods are compared and possible formation mechanisms of bamboo-like carbon nanotubes are discussed.
Highlights
In recent years, carbon nanomaterials with different shapes such as carbon nanotubes, nanospheres, nanofibers, and graphene have been widely investigated due to their peculiar properties that are a function of their structure, finding in turn applications in different fields [1,2,3].Due to their unique spherical structure, porous carbon nanospheres (CNS) can provide a fast molecular diffusion/transfer which is of great importance for their applications [1]
We mainly focus on controllable synthesis of traditional carbon nanotubes (CNTs), especially bamboo-like carbon nanotubes
The present review article reports on the synthesis of bamboo-like nanotubes by using reforming reactions and compares the properties of the so obtained carbon nanostructures with those of bamboo-like carbon nanotubes (CNTs) synthesized by employing other methods, with the aim of giving an overview of the relationship between structure, properties, and synthesis procedures
Summary
Carbon nanomaterials with different shapes such as carbon nanotubes, nanospheres, nanofibers, and graphene have been widely investigated due to their peculiar properties that are a function of their structure, finding in turn applications in different fields [1,2,3]. The excellent hydrogen storage capacity and lithium storage properties have increased their application for hydrogen storage and lithium-ion battery electrodes [74,75] These bamboo-like carbon nanotubes are components of sensors [76]. The present review article reports on the synthesis of bamboo-like nanotubes by using reforming reactions and compares the properties of the so obtained carbon nanostructures with those of bamboo-like carbon nanotubes (CNTs) synthesized by employing other methods, with the aim of giving an overview of the relationship between structure, properties, and synthesis procedures. The controllable synthesis of carbon nanotubes with tailored properties is certainly a challenge for researchers thanks to their valuable applications in several fields
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