수산화코발트의 초음파 폴리올 합성과 자성 선별법을 이용한 코발트 나노 분말의 제조

Title
수산화코발트의 초음파 폴리올 합성과 자성 선별법을 이용한 코발트 나노 분말의 제조
Other Titles
The Fabrication of Cobalt Nanopowder by Sonochemical Polyol Synthesis of Cobalt Hydroxide and Magnetic Separation Method
Authors
김영도
Keywords
Cobalt nanopowder; Sonochemisty; Polyol process; Magnetic separation
Issue Date
2015-02
Publisher
한국분말야금학회
Citation
한국분말야금학회지, v. 22, NO 1, Page. 39-45
Abstract
In this study, cobalt nanopowder is fabricated by sonochemical polyol synthesis and magnetic separationmethod. First, sonochemical polyol synthesis is carried out at 220oC for up to 120 minutes in diethylene glycol(C4H10O3). As a result, when sonochemical polyol synthesis is performed for 50 minutes, most of the cobalt precursor(Co(OH)2) is reduced to spherical cobalt nanopowder of approximately 100 nm. In particular, aggregation and growth ofcobalt particles are effectively suppressed as compared to common polyol synthesis. Furthermore, in order to obtainfiner cobalt nanopowder, magnetic separation method using magnetic property of cobalt is introduced at an early reductionstage of sonochemical polyol synthesis when cobalt and cobalt precursor coexist. Finally, spherical cobalt nanopowderhaving an average particle size of 22 nm is successfully separated.
URI
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=BMOGBP_2015_v22n1_39http://hdl.handle.net/20.500.11754/22280
ISSN
1225-7591
DOI
http://dx.doi.org/10.4150/KPMI.2015.22.1.39
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ETC
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수산화코발트의초음파폴리올합성과자성선별법을이용한코발트나노분말의제조.pdfDownload
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