Synthesis of Highly Dispersed Fe3O4 Submicrometer Spheres in a One‐Pot Anion‐induced Solvothermal System. Issue 2 (12th January 2017)

• Record Type: Journal Article
• Authors: Huang, Peng; Yin, Ting; Zhang, Qian; Gao, Guo; Shapter, Joseph G.; Shearer, Cameron J.; Zhang, Chunlei; Qi, Wen; Cui, Daxiang
• Is Part Of: Journal of the Chinese Chemical Society. Volume 64:Issue 2(2017:Feb.)
• Page Start: 217
• Page End: 223
• Publication Date: 2017-01-12
• Subjects: Fe3O4 -- Submicrometer spheres -- Solvothermal -- Ostwald ripening; Chemistry -- Periodicals; Electronic journals; 540.5
• DOI: 10.1002/jccs.201600833
• Languages: English
• ISSNs: 0009-4536

Abstract

Abstract : A facile, anion‐induced, one‐pot solvothermal method was successfully developed to prepare two kinds of highly dispersed magnetic Fe3 O4 submicrometer spheres at 200°C in 12 h. The diameters of the as‐prepared Fe3 O4 submicrometer spheres are ~500 and ~200 nm, respectively. With the guidance of OAc − ions, the size and morphology of the Fe3 O4 spheres could be well controlled. The saturation magnetization of the Fe3 O4 spheres was measured to be 84 and 74 emu/g, respectively. The assembly of tiny precursor nuclei into the Fe3 O4 spheres relies on Ostwald ripening. The synthesized Fe3 O4 submicrometer spheres show good magnetic response, good water solubility, and uniform size. Abstract : Magnetic Fe3 O4 submicrometer spheres are widely used for coatings, as drug and gene carriers, for catalytic treatment, and as anode materials for lithium ion batteries. Two kinds of highly dispersed magnetic Fe3 O4 submicrometer spheres (~500 and ~200 nm) have been successfully synthesized via a facile anion‐induced, one‐pot solvothermal method. The formation mechanism relies on Ostwald ripening.