Nanomaterials (Oct 2021)

Preparation of Multilayered Core–Shell Fe<sub>3</sub>O<sub>4</sub>-SnO<sub>2</sub>-C Nanoparticles via Polymeric/Silane–Amino Functionalization

  • Jae Uk Hur,
  • Gye Seok An,
  • Sung-Churl Choi

DOI
https://doi.org/10.3390/nano11112877
Journal volume & issue
Vol. 11, no. 11
p. 2877

Abstract

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Multilayered core–shell Fe3O4-SnO2-C nanoparticles were prepared via surface treatment and carbonization at atmospheric pressure. Fe3O4-SnO2 nanoparticles were prepared by the carboxylation of the pivotal particles (Fe3O4) with an anionic surfactant to immobilize SnO2 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.

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