Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김희택 | - |
dc.date.accessioned | 2019-10-17T01:31:45Z | - |
dc.date.available | 2019-10-17T01:31:45Z | - |
dc.date.issued | 2005-07 | - |
dc.identifier.citation | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v. 11, No. 4, Page. 584-589 | en_US |
dc.identifier.issn | 1226-086X | - |
dc.identifier.uri | https://www.cheric.org/research/tech/periodicals/view.php?seq=502075 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/111158 | - |
dc.description.abstract | Fe3O4 nanoparticles having a size of 10 nm were synthesized by the co-precipitation of Fe3+ and Fe2+ (molar ratio, 2:1) with NH4OH under a nitrogen atmosphere. The γ-Fe2O3 nanoparticles were also prepared by the sol-gel process using Fe(NO3)3ㆍ9H2O and ethylene glycol. The particle size of γ-Fe2O3 decreased upon decreasing of molar ratio R [Fe(NO3)3ㆍ9H2O/ethylene glycol]; the mean particle size was ca. 15~20 nm. Silica particles were coated on the surface of Fe3O4 and γ-Fe2O3 nanoparticles by the hydrolysis of TEOS, and then 3~APTES, an amino-silane coupling agent, was covalently coupled to the surface of the silica-coated magnetic nanoparticles. The characteristics of the silica-coated magnetic nanoparticles were analyzed by TEM, X-ray diffraction, TGA-DTA, and FT-IR spectroscopy. As a result, the structure of the magnetic nanoparticles was determined to be of the spinel type; the crystalline phase transition temperature from α-Fe2O3 to γ-Fe2O3 was ca. 400 ℃. In addition, Fe-O-Si chemical bonds appeared on the surface of the magnetic nanoparticles. | en_US |
dc.language.iso | ko_KR | en_US |
dc.publisher | KOREAN SOC INDUSTRIAL ENGINEERING CHEMISTRY | en_US |
dc.subject | silica-coated magnetic nanoparticles | en_US |
dc.subject | co-precipitation method | en_US |
dc.subject | sol-gel process | en_US |
dc.subject | amino-silane coupling agent | en_US |
dc.title | Formation and Characterization of Silica-Coated Magnetic Nanoparticles by Sol-Gel Method | en_US |
dc.type | Article | en_US |
dc.relation.journal | JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | - |
dc.contributor.googleauthor | Kim, KD | - |
dc.contributor.googleauthor | Kim, SS | - |
dc.contributor.googleauthor | Kim, HT | - |
dc.relation.code | 2011205248 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | khtaik | - |
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