Core-shell-type Fe3O4@carbon nanoparticles and their fabrication using silanic/polymeric amino functionalization

A facile strategy for the fabrication of a carbon shell on Fe3O4 nanoparticles with a cluster structure has been proposed. Unlike the conventional solvothermal process using an autoclave, the proposed synthesis method could yield core-shell structured Fe3O4@C nanoparticles at low temperature and atmospheric pressure. This synthesis method was based on the chemical bonding among the terminal amine groups, introduced on the Fe3O4 surface, and carbonization by the catalytic reaction of glucose (carbon source) with sulfuric acid. The properties of the Fe3O4@C nanoparticles so obtained depended on the terminal amine groups that modified the iron oxide surface. The effects of the silane-and polymer-based amination on the fabrication of the carbon shell were investigated.

Automated summary

A facile method for fabricating carbon-shelled Fe3O4 nanoparticles with a cluster structure at low temperature and atmospheric pressure was proposed. The properties of the obtained Fe3O4@C nanoparticles depended on the terminal amine groups on the iron oxide surface. The effects of silane-and polymer-based amination on the fabrication of the carbon shell were investigated.