Tunable synthesis and multifunctionalities of Fe3O 4-ZnO hybrid core-shell nanocrystals

Hongling Liu, Junhua Wu, Ji Hyun Min, Xiaoyan Zhang, Young Keun Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We report the tunable synthesis and multifunctionalities of Fe 3O4-ZnO hybrid core-shell nanocrystals as prepared through controlled sequential nanoemulsion processes. The characterization shows the orderly variations of the structural, magnetic, photoluminescent and absorption properties of the nanocrystals versus the nanoshell thickness. The nanocrystals reveal structural features unique to the core-shell design and exhibit well-defined superparamagnetic behavior at room temperature. In opposite to the decreasing magnetization, both bandgap and induced surface emissions depend strongly on the increasing nanoshell thickness. Moreover, the FTIR analysis provides the fingerprints of the polymer surfactant, ZnO and Fe 3O4 in the same nano-entity and the core-shell nanocrystals could be directly dispersed in both aqueous and organic media for application readiness. Aptly tunable in nanostructures and thus optimized properties, this kind of monosized, high quality, and multifunctional core-shell nanocrystals could be of interest for fundamental studies and potential applications.

Original languageEnglish
Pages (from-to)551-558
Number of pages8
JournalMaterials Research Bulletin
Volume48
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1

Keywords

  • A. Inorganic compounds
  • A. Nanostructures
  • B. Chemical synthesis
  • D. Magnetic properties
  • D. Optical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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