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[1]张敦谱,徐丹,倪亚茹,等.溶剂热可控合成亚微米Co粉及其磁性能[J].南京工业大学学报(自然科学版),2015,37(03):0.
 ZHANG Dunpu,XU Dan,NI Yaru,et al.Size-controllable synthesis of cobalt submicrospheres by solvothermal method and their magnetic properties[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(03):0.
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溶剂热可控合成亚微米Co粉及其磁性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年03期
页码:
0
栏目:
出版日期:
2015-05-30

文章信息/Info

Title:
Size-controllable synthesis of cobalt submicrospheres by solvothermal method and their magnetic properties
作者:
张敦谱1徐丹2倪亚茹1寇佳慧1陆春华1许仲梓1
1.南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009; 2.南京晓庄师范学院 生命与科学学院,江苏 南京 211171
Author(s):
ZHANG Dunpu1XU Dan2NI Yaru1KOU Jiahui1LU Chunhua1XU Zhongzi1
1.State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China; 2.School of Bio-chemical and Environmental Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China
关键词:
磁性粉体 粒径分布窄 粒径可控 合成机制
Keywords:
magnetic powder narrow particle size distribution particle size control growth mechanism
文献标志码:
A
摘要:
采用溶剂热液相还原的方法可控合成粒径分布窄的球形Co粉。用X线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)及超导量子干涉仪磁强计(SQUID)表征合成Co粉的物相、形貌、粒度和磁性能。结果表明:所制备的样品为六方相金属Co单质,其分散性好,粒径分布窄; Co粉的粒径可通过调节NaOH的用量在0.68~6.2 μm有效调控。通过合成机制的分析,认为体系中Co2+首先生成纳米片状的Co盐前驱体,而游离Co粒子与乙二胺配位并被还原成Co粉。由于前驱体能够降低游离Co2+的浓度并缓慢释放Co源,使得Co粉具有较窄的粒径分布,且制得的Co粉皆具有较好的磁性能。
Abstract:
Cobalt submicrospheres with narrow particle size distribution were synthesized by a solvothermal solution reduction method.The obtained products were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM), and superconducting quantum interference device magnetometer(SQUID).Results showed that well-dispersed cobalt submicrospheres of hexagonal structure were successfully synthesized.The powders possessed narrow particle size distribution,and the size could be well controlled in the range of 0.68-6.2 μm by controlling the amount of NaOH.The growth mechanism based on time-dependent experiments revealed that cobalt ions first to nanosheet precursor,and other dissociative cobalt ions were coordinated with ethanediamine and reduced to cobalt powder.The formation of precursor could give a sharp reduction of dissociative cobalt ions and provide a controlled release of cobalt ion,which facilitated the preparation of cobalt with narrow particle size distribution.The obtained products had well magnetic properties.

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备注/Memo

备注/Memo:
收稿日期:2014-02-12
基金项目:江苏省自然科学基金(51303079); 江苏省普通高校研究生科研创新计划(CXLX11_0356); 江苏高校优势学科建设工程
作者简介:张敦谱(1986—),男,江苏徐州人,博士生,主要研究方向为纳米复合材料; 陆春华(联系人),教授,E-mail:chhlu@njtech.edu.cn.
引用本文:张敦谱,徐丹,倪亚茹,等.溶剂热可控合成亚微米Co粉及其磁性能[J].南京工业大学学报:自然科学版,2015,37(3):8-12..
更新日期/Last Update: 2015-05-20