组分依赖的铁氧体纳米颗粒选择性离子释放研究  

Selective ion release from composition-dependent ferrite nanoparticles

作　　者：马慧军 王燕云 朱柳 李红利 邓霞[2] 张欢 彭明丽[1] 彭勇[2] 樊海明 MA Hui-jun;WANG Yan-yun;ZHU Liu;LI Hong-li;DENG Xia;ZHANG Huan;PENG Ming-li;PENG Yong;FAN Hai-ming(Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education,College of Chemistry and Materials Science,Northwest University,Xi’an Shaanxi 710069;School of Materials and Energy and,Electron Microscopy Centre of Lanzhou University,Lanzhou Gansu 730000,China)

机构地区：[1]西北大学化学与材料科学学院,合成与天然功能分子化学教育部重点实验室,陕西西安710069 [2]兰州大学材料与能源学院,兰州大学电镜中心,甘肃兰州730000

出　　处：《电子显微学报》2022年第3期219-225,共7页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金面上项目(Nos.61874088,81871417,22072115,51771085,5157110);中国博士后科学基金面上资助(No.2019M653719)。

摘　　要：本文合成了一系列不同组分的10 nm铁氧体纳米颗粒,并采用一种简单的实验模型装置,模拟纳米颗粒在生物医用过程中所遇到不同酸度的微环境,研究不同组分铁氧体纳米颗粒与其作用过程中的离子释放行为。结果表明,对于不同组分的铁氧体纳米颗粒,镍、锌、钴铁氧体都能够选择性地释放出相应的Ni、Zn、Co离子且释放在3 h后达到平衡;在pH 4.8时三种铁氧体纳米颗粒金属离子释放量高于pH 7.4。In this work, we report a synthesis of 10 nm nanoparticle ferrites with different compositions and their ion release behaviors under the interaction with biomedical microenvironment of different acidity by designing a simple experimental model. The experimental results showed that the synthesized NiFeO, ZnFeOand CoFeOferrites can selectively release their Ni, Znand Co, and the released amount reached a balance after 3 h. When the pH value of the simulated biomedical microenvironment was 4.8, the released amounts of metallic ions for the three ferrites were higher than those of 7.4 pH value.

关 键 词：尖晶石结构 铁氧体 纳米颗粒 金属离子释放 

分 类 号：O646.6[理学—物理化学] TB383[理学—化学] TG172.6[一般工业技术—材料科学与工程] TG115.215.3[金属学及工艺—金属表面处理]