期刊
MATERIALS RESEARCH BULLETIN
卷 48, 期 2, 页码 895-900出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.11.078
关键词
Nanostructures; Oxides; Magnetic materials; Chemical synthesis
资金
- National Basic Research Program of China (973 Program) [2012CB933600]
- National Natural Science Foundation of China [51172260, 51121064]
- Science and Technology Commission of Shanghai [11nm0506600]
- CAS/SAFEA International Partnership Program for Creative Research Teams
Sodium polyacrylate modified Fe3O4 magnetic microspheres (SPMFMs) formed by self-assembly of nanocrystals were synthesized by a solvothermal method in mixed solvents of ethylene glycol and water. The SPMFMs exhibited a quasi-superparamagnetic behavior, and the saturation magnetization reached as high as 81.6 emu/g. The potential applications of the SPMFMs in the magnetic resonance imaging (MRI), drug delivery and waste water treatment were investigated. The loading capacity of the SPMFMs for bovine hemoglobin was 95 mg/g, and 33% of the loaded bovine hemoglobin was released in a period of 75 h. The adsorption for methylene blue and fuchsin basic using the SPMFMs as the adsorbent in the waste water treatment was efficient and rapid (within 1 min). The SPMFMs after the adsorption of the organic pollutants could be recycled and reused effectively with a slightly reduced adsorption capacity. (C) 2012 Elsevier Ltd. All rights reserved.
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