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johnson_g

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ÈñÎèÅɶÓ(½ð±Ò+2,VIP+0): 9-24 08:52
the 4-nm Fe3O4 nanoparticles are made as follows:12 Fe(acac)3 (2 mmol) was mixed in phenyl ether (20 mL) with 1,2-hexadecanediol (10 mmol), oleic acid (6 mmol), and oleylamine (6 mmol) under nitrogen and was heated to reflux for 30 min. After cooled to room temperature, the dark-brown mixture was treated with ethanol under air, and a dark-brown material was precipitated from the solution. The product was dissolved in hexane in the presence of oleic acid and oleylamine and reprecipitated with ethanol to give 4-nm Fe3O4 nanoparticles.
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2Â¥2009-09-09 15:28:42
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ÈñÎèÅɶÓ(½ð±Ò+5,VIP+0):¿ÉÒÔ¿´ÁË£¬·Ç³£¸Ðл~ 9-17 10:25
ÈñÎèÅɶÓ(½ð±Ò+1,VIP+0): 10-14 10:05
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3Â¥2009-09-09 15:59:33
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Originally posted by maths2651 at 2009-9-9 15:59:
[url]http://d.namipan.com/d/%e9%93%81%e7%b3%bb%e7%ba%b3%e7%b1%b3%e6%9d%90%e6%96%99%e7%9a%84%e5%88%b6%e5%a4%87%e5%8f%8a%e5%85%b6%e8%b6%85%e5%88%86%e5%ad%90%e4%bf%ae%e9%a5%b0.kdh/aa24ae39e541c9708fda ...

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