CN

陈克正

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

Team member

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Current position: Home > Scientific Research > Paper Publications

纳米Fe_3O_4粒子的制备及表面包覆

Release time:2021-03-15 Hits:

Key Words:纳米Fe3O4粒子;;化学共沉淀法;;氧化沉淀法;;磁性液体;;表面包覆

Abstract:采用化学共沉淀法和氧化沉淀法制备磁性纳米Fe3O4粒子,并用柠檬酸三钠为表面活性剂包覆制备纳米Fe3O4粒子,同时利用包覆磁性粒子制备水基纳米磁性液体。对两种方法制备的纳米Fe3O4粒子的晶体结构、微观形貌及化学共沉淀法制备的Fe3O4在包覆前后等电点的变化进行了表征。结果表明,化学共沉淀法制备的纳米Fe3O4粒子平均粒径约为20 nm且分布比较均匀,表面活性剂包覆后,等电点由原来的pH=6.70移向pH=2.35,证实了Fe3O4粒子表面被柠檬酸离子所包覆,且制得的磁性液体的稳定性比较高;而氧化沉淀法制备Fe3O4纳米粒子粒径分布是从几十纳米到上百纳米,制得的磁性液体出现很明显的团聚。

Volume:No.109

Issue:06

Translation or Not:no

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