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2Â¥: Originally posted by ϲ°®»¯Ñ§ at 2014-02-23 22:07:19
Synthesis of magnetic nanoparticles (Fe 3 O 4 -NP) : Citrate-stabilized
Fe 3 O 4 -NP were synthesized following the Massart precipitation method,
followed by nanoparticles surface functionalization ...

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3Â¥2017-10-24 21:04:39
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Synthesis of magnetic nanoparticles (Fe 3 O 4 -NP) : Citrate-stabilized
Fe 3 O 4 -NP were synthesized following the Massart precipitation method,
followed by nanoparticles surface functionalization with citric acid. [ 13 ]
Briefl y, 0.86 g FeCl 2 and 2.35 g FeCl 3 were mixed in 40 mL water and
heated to 80 ¡ãC under argon in a three-necked fl ask. While vigorously
stirring the reaction mixture, 5 mL of NH 4 OH was introduced by a
syringe and heating was continued for 30 min. Next, 1 g of citric acid
in 2 mL water was introduced and the temperature raised to 95 ¡ãC
while stirring was continued for an additional 90 min. Subsequently,
the nanoparticle dispersion was dialyzed against water in a 12¨C14 kD
cut-off cellulose membrane (Roth, Germany), resulting in a stable
dispersion of negatively charged magnetite nanoparticles. Particle size
and zeta-potential were determined via DLS and electrophoretic mobility
measurements, respectively, using Malvern Nano ZS revealing a mean
particle size of 30 nm and a zeta potential of ¨C25 mV.   AMÉϵģ¬×Ô¼º×öµÄ£¬·ÖÉ¢ÐԺܺ㬷ÅÁËÒ»¸öÔÂÒ²½öÓÐÒ»¶¡µã³Áµí
2Â¥2014-02-23 22:07:19
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