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[ÇóÖú] Çó·­Òë-subdomain magnetite particles

ÎÄÏ×ÉϾ­³£¿´µ½£¬subdomainÕâ¸ö´Ê£¬Ó¦¸Ã×öÒ»¸ö¶¯´Ê½²£¬µ«ÊDz»ÖªµÀÔõô·­ÒëºÃЩ£¬Çó³æÓѰïæ¡£
¸½³ö´¦£ºThe basic procedure for chemical synthesis of magnetite
nanoparticles, mostly used for magnetic fluid preparation,
consists of the following steps: co-precipitation ( ¡«80◦C)
of magnetite from aqueous solutions of Fe3+and Fe2+
ions in the presence of concentrated NH4OH solution
(25%) ¡úsubdomain magnetite particles ¡ú¡ústeric stabilization
(chemisorption of lauric acid (LA), myristic acid (MA) or
oleic acid (OA); 80¨C82◦C)¡úphase separation ¡úmagnetic
decantation and repeated washing¡úmono-layer covered
magnetite nanoparticles + free surfactant¡úextraction of mono-
layer covered magnetite nanoparticles (acetone addition;
flocculation)¡ústabilized magnetite nanoparticles .

[ Last edited by ssenn on 2012-8-29 at 10:06 ]
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½ð³æ (СÓÐÃûÆø)

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4Â¥: Originally posted by wangzhipengj at 2012-08-29 11:33:39
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