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KMID : 0380020120270030157
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Korean Journal of Biotechnology and Bioengineering
2012 Volume.27 No. 3 p.157 ~ p.160
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Synthesis of Magnetic Nanoparticles Using Magnolia kobus Leaf Extract
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Song Jae-Yong
Byun Tae-Gang
Kim Beom-Soo
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Abstract
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When iron oxide magnetic nanoparticles were synthesized by co-precipitation method using aqueous ammonia as reducing agent, the synthesized particles were aggregated and thus precipitation occurred. Using Magnolia kobus leaf extract as reducing agent, spherical nanoparticles of 50~200 nm were synthesized with low yield. By using both Magnolia kobus leaf extract and aqueous ammonia as reducing and stabilizing agents, smaller nanoparticles of 40~120 nm could be synthesized with various shapes. The synthesized magnetic nanoparticles were characterized with field emission transmission electron microscopy (FE-TEM) and scanning electron microscopy (SEM). TEM and SEM images showed that the magnetic nanoparticles are a mixture of triangles, tetragons, rods and spherical structures.
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KEYWORD
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magnetic nanoparticles, plant extract, Magnolia kobus
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