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公开(公告)号：KR100482278B1
公开(公告)日：2005-04-14
申请号：KR1020020064314
申请日：2002-10-21
Applicant: 한국과학기술연구원
Abstract: 본 발명은 값이 싼 저급의 계면활성제와 용매 내에서 쉽고 간편한 방법으로 저급의 철 펜타카르보닐[Fe(CO)
5 ]을 열분해하고 잔류 산소에 의한 산화반응을 진행시켜 2가와 3가의 혼합 산화철 나노분말을 제조하거나, 이 분말 용액에 공기를 주입시켜 산화 반응이 더욱 진행된 마그헤마이트(γ-Fe
2 O
3 ) 나노분말을 제조함으로써, 산화상태에 관계없이 직경이 20 nm 이하로 균일하고 초상자성을 가지며, 입자 사이에 뭉침이 없어 의료용으로 활용이 적합한 구형 산화철 나노분말의 경제적인 합성법을 제공한다.-
公开(公告)号：KR1020040034224A
公开(公告)日：2004-04-28
申请号：KR1020020064314
申请日：2002-10-21
Applicant: 한국과학기술연구원
CPC classification number: B22F9/24 , B22F1/0018 , B22F2301/35 , B82Y30/00 , B82Y40/00
Abstract: PURPOSE: Provided is an economical method for preparing spherical iron oxide nanopowder having uniformly controlled particle diameter and particle diameter distribution, superparamagnetic property and individualization of particles suitable for use in medical applications, from inexpensive starting materials by a simple process. CONSTITUTION: The method comprises the steps of: providing a solution containing a surfactant selected from the group consisting of ROOH, RNH2 and a mixture thereof, in which R is a C6 or higher alkyl or alkenyl, and an organic solvent selected from the group consisting of dibenzylether, diphenylether and dioctylether; introducing iron pentacarbonyl(Fe(CO)5) precursor into the solution, while purging with nitrogen gas, thereby performing thermal decomposition; and oxidizing the solution with residual oxygen left in the thermally decomposed iron pentacarbonyl solution to obtain iron oxide powder.
Abstract translation: 目的：提供一种经济的方法，通过简单的方法从廉价的起始原料制备具有均匀控制的粒径和粒径分布，超顺磁性能和适用于医疗应用的颗粒的个性化的球形氧化铁纳米粉末。 方案：该方法包括以下步骤：提供含有选自由ROOH，RNH 2及其混合物组成的组的表面活性剂的溶液，其中R为C6或更高级烷基或烯基，以及选自以下的有机溶剂： 的二苯醚，二苯醚和二辛醚; 将铁五羰基（Fe（CO）5）前体引入溶液中，同时用氮气吹扫，从而进行热分解; 并用热分解的铁五羰基溶液中残留的氧氧化溶液，得到氧化铁粉末。
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