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 language | English |
|---|---|
| Pages (from-to) | 8112-8117 |
| Number of pages | 6 |
| Journal | Journal of Materials Science |
| Volume | 47 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2012 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
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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 journal › Article
TY - JOUR
T1 - Synthesis of highly stable graphite-encapsulated metal (Fe, Co, and Ni) nanoparticles
AU - Lee, Seung Jae
AU - Jung, Jongjin
AU - Kim, Mi Ae
AU - Kim, Yong Rok
AU - Park, Joung Kyu
PY - 2012/12/1
Y1 - 2012/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84868353287&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84868353287&partnerID=8YFLogxK
U2 - 10.1007/s10853-012-6706-6
DO - 10.1007/s10853-012-6706-6
M3 - Article
AN - SCOPUS:84868353287
VL - 47
SP - 8112
EP - 8117
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 23
ER -