摘要
现代诊断学的发展使得超小超顺磁性的Fe3O4粒子在医学领域具有重要应用价值。实验中利用某些羧酸盐对铁氧化物晶粒成长的抑制作用,在共沉淀法中引入柠檬酸根,制备出平均粒径小于5nm的Fe3O4纳米分散体系。研究了不同柠檬酸根浓度对生成粒子的大小、结晶和表面吸附情况的影响。对Fe3O4颗粒在不同条件下的磁性与胶体稳定性进行了讨论。
The citrate irons were introduced in the coprecipitation method for ultrafine Fe3O4 nanoparticles preparation. Well-dispersed Fe3O4 nanoparticles were directly prepared with average size smaller than 5 nm. The effects of various concentrations of citrate ions on size, crystallization and surface adsorption of particles were investigated. The maturation magnetization and colloidal stability of Fe3O4 particles under various conditions were discussed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2004年第11期1279-1283,共5页
Chinese Journal of Inorganic Chemistry
基金
国家863高科技发展计划(No.2002AA302202)资助项目
