24小时热门版块排行榜

返回列表

haidaochi

木虫 (正式写手)

应助: 0 (幼儿园)
金币: 4212.5
散金: 16
红花: 2
帖子: 367
在线: 166.3小时
虫号: 829665
注册: 2009-08-17
专业: 无机纳米化学

[求助] 热分解法制备四氧化三铁

请教大家一个问题：
热分解法制备四氧化三铁时候，油酸铁和溶剂的比例是多少啊，为什么我每次做出的磁性粒子都有杂质啊。就是xrd有很多杂峰。

回复此楼

» 收录本帖的淘帖专辑推荐

四氧化三铁纳米颗粒制备、修饰及包覆

» 猜你喜欢

金属材料论文润色/翻译怎么收费? 已经有276人回复

» 本主题相关价值贴推荐，对您同样有帮助:

1楼2011-05-06 23:39:30

已阅关注TA 给TA发消息送TA红花 TA的回帖

阳光西骑士

木虫 (正式写手)

应助: 33 (小学生)
金币: 4498.4
散金: 1942
红花: 40
帖子: 853
在线: 1290.8小时
虫号: 1287066
注册: 2011-05-05
性别: GG
专业: 生物无机化学

【答案】应助回帖

haidaochi(金币+2): 2011-05-07 08:19:19
haidaochi(金币+1): 2011-05-07 23:18:04
haidaochi(金币+1): 2011-05-17 09:35:48
haidaochi(金币+3): 2011-05-24 08:50:01

参考这篇文献试试
Ultra-large-scale syntheses of
monodisperse nanocrystals
JONGNAM PARK1, KWANGJIN AN1, YOSUN HWANG2, JE-GEUN PARK2, HAN-JIN NOH3,
JAE-YOUNG KIM3, JAE-HOON PARK3, NONG-MOON HWANG4 AND TAEGHWAN HYEON1*
1National Creative Research Center for Oxide Nanocrystalline Materials and School of Chemical Engineering, Seoul National University, Seoul 151-744, Korea
2Department of Physics and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Korea
3Department of Physics and Pohang Light Source, Pohang University of Science and Technology, Pohang 790-784, Korea
4School of Materials Science & Engineering and Nano-Systems Institute (NSI-NCRC), Seoul National University, Seoul 151-744, Korea
*e-mail: thyeon@plaza.snu.ac.kr

下面是合成过程
SYNTHESIS OF IRON–OLEATE COMPLEX
The metal–oleate complex was prepared by reacting metal chlorides and sodium oleate. In a typical
synthesis of iron–oleate complex, 10.8 g of iron chloride (FeCl3·6H2O, 40 mmol, Aldrich, 98%) and
36.5 g of sodium oleate (120 mmol, TCI, 95%) was dissolved in a mixture solvent composed of 80 ml
ethanol, 60 ml distilled water and 140 ml hexane. The resulting solution was heated to 70 °C and kept at
that temperature for four hours. When the reaction was completed, the upper organic layer containing
the iron–oleate complex was washed three times with 30 ml distilled water in a separatory funnel. After
washing, hexane was evaporated off, resulting in iron–oleate complex in a waxy solid form.
SYNTHESIS OF IRON OXIDE NANOCRYSTALS
The following is a typical synthetic procedure for monodisperse iron oxide (magnetite) nanocrystals
with a particle size of 12 nm. 36 g (40 mmol) of the iron-oleate complex synthesized as described above
and 5.7 g of oleic acid (20 mmol, Aldrich, 90%) were dissolved in 200 g of 1-octadecene (Aldrich,
90%) at room temperature. The reaction mixture was heated to 320 °C with a constant heating rate of
3.3 °C min–1, and then kept at that temperature for 30 min. When the reaction temperature reached
320 °C, a severe reaction occurred and the initial transparent solution became turbid and brownish
black. The resulting solution containing the nanocrystals was then cooled to room temperature, and
500 ml of ethanol was added to the solution to precipitate the nanocrystals. The nanocrystals were
separated by centrifugation.