Role of N-methyl-2-pyrrolidone for preparation of Fe3O4@SiO2 controlled the shell thickness

  • Sung-Bok Wee
  • Hyeon-Cheol Oh
  • Tae-Gyun Kim
  • Gye-Seok An
  • Sung-Churl Choi
Research Paper
First Online:
Received:
Accepted:

Abstract

We developed a simple and novel approach for the synthesis of Fe3O4@SiO2 nanoparticles with controlled shell thickness, and studied the mechanism. The introduction of N-methyl-2-pyrrolidone (NMP) led to trapping of monomer nuclei in single shell and controlled the shell thickness. Fe3O4@SiO2 controlled the shell thickness, showing a high magnetization value (64.47 emu/g). Our results reveal the role and change in the chemical structure of NMP during the core-shell synthesis process. NMP decomposed to 4-aminobutanoic acid in alkaline condition and decreased the hydrolysis rate of the silica coating process.

Keywords

Fe3O4@SiO2 N-Methyl-2-pyrrolidone Binary solvent Dispersion stability Shell thickness Nanocomposites 
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Notes

Acknowledgments

The work presented in this paper was supported by a National Research Foundation of Korea (NRF) grant funded by the Ministry of Science, ICT & Future Planning Science and Technology (2014R1A2A1A11050220).

Compliance with ethical standards

Conflict of interest

Authors S.B. Wee, T.G. Kim, and G.S. An have received research grants from the National Research Foundation of Korea (NRF).

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Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  • Sung-Bok Wee
    • 1
  • Hyeon-Cheol Oh
    • 2
  • Tae-Gyun Kim
    • 1
  • Gye-Seok An
    • 1
  • Sung-Churl Choi
    • 1
  1. 1.Division of Materials Science and EngineeringHanyang UniversitySeoulSouth Korea
  2. 2.Korea Nano Plus, Inc.SeoulSouth Korea

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