Preparation of Multilayered Core-Shell FeO-SnO-C Nanoparticles via Polymeric/Silane-Amino Functionalization.

Multilayered core-shell FeO-SnO-C nanoparticles were prepared via surface treatment and carbonization at atmospheric pressure. FeO-SnO nanoparticles were prepared by the carboxylation of the pivotal particles (FeO) with an anionic surfactant to immobilize SnO nanoparticles. A method was proposed to externally surround hydrophilic carbon with amine-forming materials, polyethyleneimine (PEI), and (3-Aminopropyl) triethoxysilane (APTES). The synthesis strategy was based on the electrostatic bonding of the introduced amine group with the hydroxyl group on the carbon precursor and the carbonization of the coating layer by the catalytic reaction of sulfuric acid.