Synthesis of highly stable graphite-encapsulated metal (Fe, Co, and Ni) nanoparticles

Seung Jae Lee, Jongjin Jung, Mi Ae Kim, Yong Rok Kim, Joung Kyu Park

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Graphite-encapsulated metal magnetic nanoparticles have been attracted for biological applications because of their high magnetization of the encapsulated particles. However, most of the synthetic methods have limitations in terms of scalability and economics because of the demanding synthetic conditions and low yields. Here, we show that well-controlled graphite-encapsulated metal (Fe, Co, and Ni) nanoparticles can be synthesized by a hydrothermal method, simply by mixing metal source with sucrose as a carbon source. The saturation magnetization (Ms) values of Fe/C, Co/C, and Ni/C were 86.6, 43.8, and 113.1 emu/g, respectively. The Fe/C and Ni/C showed higher Ms values than bulk Fe 3O 4 (75.5 emu/g). The graphite-encapsulated metal nanoparticles showed good stability against acid and base environments.

Original languageEnglish
Pages (from-to)8112-8117
Number of pages6
JournalJournal of Materials Science
Volume47
Issue number23
DOIs
Publication statusPublished - 2012 Dec 1

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Graphite
Metals
Nanoparticles
Metal nanoparticles
Sugar (sucrose)
Saturation magnetization
Sucrose
Scalability
Magnetization
Carbon
Economics
Acids

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, Seung Jae ; Jung, Jongjin ; Kim, Mi Ae ; Kim, Yong Rok ; Park, Joung Kyu. / Synthesis of highly stable graphite-encapsulated metal (Fe, Co, and Ni) nanoparticles. In: Journal of Materials Science. 2012 ; Vol. 47, No. 23. pp. 8112-8117.
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Synthesis of highly stable graphite-encapsulated metal (Fe, Co, and Ni) nanoparticles. / Lee, Seung Jae; Jung, Jongjin; Kim, Mi Ae; Kim, Yong Rok; Park, Joung Kyu.

In: Journal of Materials Science, Vol. 47, No. 23, 01.12.2012, p. 8112-8117.

Research output: Contribution to journalArticle

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