Attachment of magnetic nanoparticles on carbon nanotubes using oleate as an interlinker molecule

Controlling the size and size distribution of magnetite nanoparticles on carbon nanotubes

“…Subsequently, the ferric ions were in situ reduced into Fe 3 O 4 by EG with the assistance of sodium oleate [29]. The Fe 3 O 4 was amorphous in phase due to the low reaction temperature in our case, though Liu et al [13] reported that crystalline magnetite was formed by the reduction of EG at 200 • C in autoclave. During the process of heat treatment, the decomposition of oleate gradually occurred with increasing temperature.…”

“…Many efforts have been devoted to the synthesis of nanocomposites using CNTs due to their synergistic and hybrid properties as components, which have various applications such as reinforcement fibers, novel catalysts and potential electronic nanodevices [10][11][12][13][14]. Dispersing particles on the sidewalls of CNTs can make solid nanoparticles achieving a high dispersion degree.…”

“…Various chemistry-based methods have been developed to prepare Fe 3 O 4 /CNTs magnetic nanomaterials [13,16]. Though co-precipitation method is popular and simple, it has several disadvantages such as relatively poor crystallinity and magnetic properties, susceptibility to the air oxidation and the fixed stoichiometry ratio of Fe(II) to Fe(III) [17].…”

Fabrication of graphene nanosheet (GNS)–Fe3O4 hybrids and GNS–Fe3O4/syndiotactic polystyrene composites with high dielectric permittivity

“…We quantitatively calculated the content of different carbon component based on the ratios of peak areas. As shown in Table 1, [24][25][26]. Moreover, the EDS result also revealed the existence of Fe and O elements in the hybrid (see Fig.…”

“…As shown in Fig. 6, all the GNS-Fe 3 O 4 hybrids exhibited a superparamagnetic behavior without remanence and coercivity, which may be related to the very small particle size of [24,26]. The saturation magnetization value of GNS-Fe 3 O 4 /sPS composites containing 9.41 vol.% of GNS-Fe 3 O 4 is measured to be 2.0 emu/g at 10,000 Oe.…”