Carbon Nanotubes as Containers

Assembly and Magnetic Bistability of Mn3O4 Nanoparticles Encapsulated in Hollow Carbon Nanofibers

“…The effect of the host-nanocontainer on the NP assemblies can be observed in the magnetic behavior of the resultant hybrid materials, with a decrease of the ZFC-FC splitting temperature in the following order: non-encapsulated Mn 3 Table 1) is in accordance with the TGA observations indicating a higher packing density for Mn 3 O 4 @CNF. The fact that the magnetic behavior of Mn 3 O 4 @GNF differs from the non-encapsulated NPs suggests that magnetic interactions cannot be attributed solely to core-shell interactions.…”

“…However, the c' peak maximum for Mn 3 O 4 @CNF was shifted to higher temperatures with respect to those found for Mn 3 Table 1). Both magnetic parameters T B and T ZFC-peak showed the same trend.…”

“…Hollow carbon nanostructures with one macroscopic and two nanoscopic dimensions provide excellent materials to achieve this coupling, through the encapsulation and confinement of magnetic species. [3,4] The insertion of magnetic nanoparticles into carbon nanostructures has been achieved mainly through the sublimation of a metal precursor, [5] or the capillarity filling of a molten metal salt followed by pyrolysis of the encapsulated material. [6] The main drawback of these approaches is a lack of control over the composition, size, and morphology of the nanoparticles formed inside the nanotubes.…”

Molecular and crystal assembly inside the carbon nanotube: encapsulation and manufacturing approaches

“…[54], where the chemical properties of molecules in enclosed chambers carry out designated functions, such as catalysis, conductance and potential regulation of reactions rates, such as clustering reactions of crystals and ionic polyhedral [54]. The large surface areas inside the tubular structures of the CNTs functions as a surface with potentially catalytic and chemically stabilizing effects, and the application of e-beam can be used to affect and trigger chemical processes such as coalescence of carbon-particles, polymerization and other steps towards altered physical qualities for manufacturing and fabrication [54,55]. The effects from encapsulating materials are primarily of three classes: modulated thermal and electrical conductance of the CNT, altered chemical stability and increased physical robustness.…”

Electric vehicle battery technologies: From present state to future systems

“…Usage of calyx-like mega-organic compounds (Fig. 8) invoke the potential of assembling nanosized compounds in dimensions comparable to fullerenes and small nanomaterials [60,61], which selectively donate several electronpairs via the oxygens on the inherent quinone groups. This rationale applies the advantage of durable and stable nanostructured materials, with atomic and electronic electrolytic properties on designated electrophilic atoms of groups with lithium-trapping properties.…”