One-pot synthesis of PVP-coated Ni0.6Fe2.4O4 nanocrystals

Xian Yong Lu, Mu Niu, Chun Hui Yang, Luo Xin Yi, Rui Rui Qiao, Mei Hong Du, Ming Yuan Gao

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5 Citations (Scopus)

Abstract

Novel poly(N-vinyl-2-pyrrolidone) (PVP)-coated nickel ferrite nanocrystals were prepared by simultaneously pyrolyzing nickel(II) acetylacetonate (Ni(acac)2) and iron(III) acetylacetonate (Fe(acac)3) in N-vinyl-2-pyrrolidone (NVP). The PVP coating was formed in situ through polymerization of NVP. The crystalline structure of the resultant nickel ferrite was analyzed by high-resolution transmission electron microscopy, electron diffraction patterns, and powder X-ray diffraction. In addition, the valence state of Ni and the metal contents of Ni and Fe in different valence states were analyzed by X-ray photoelectron spectroscopy (XPS), atomic absorption and the phenanthroline method. The surface coating layer of PVP and its binding states were characterized by Fourier transform infrared spectroscopy in combination with XPS. Colloidal stability experiments revealed that the nanocrystals could be dispersed well in both phosphate-buffered saline and Dulbecco's Modified Eagle Medium.

Original languageEnglish
Pages (from-to)3472-3478
Number of pages7
JournalChinese Science Bulletin
Volume55
Issue number30
DOIs
Publication statusPublished - Oct 2010
Externally publishedYes

Keywords

  • colloidal stability
  • magnetic nanocrystals
  • N-vinyl-2-pyrrolidone
  • thermal decomposition

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