@article {Li:2012:1533-4880:2939, title = "Green Synthesis of Uniform Magnetite (Fe3O4) Nanoparticles and Micron Cubes", journal = "Journal of Nanoscience and Nanotechnology", parent_itemid = "infobike://asp/jnn", publishercode ="asp", year = "2012", volume = "12", number = "3", publication date ="2012-03-01T00:00:00", pages = "2939-2942", itemtype = "ARTICLE", issn = "1533-4880", eissn = "1533-4899", url = "https://www.ingentaconnect.com/content/asp/jnn/2012/00000012/00000003/art00173", doi = "doi:10.1166/jnn.2012.5684", author = "Li, Xiaolong and Zhang, Fengqin and Ma, Chao and Saul, Elingarami and He, Nongyue", abstract = "Single-crystalline Fe3O4 microcubes were obtained through a green hydrothermal procedure using Fe3+, Fe2+ and H2O2 as starting materials. The structures and morphologies of the as-prepared samples were characterized in detail by X-ray diffraction (XRD), Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) respectively. Magnetite (Fe3O4) cubes averaging 3 m in diameter were synthesized by H2O2 oxidation of Fe3+ and Fe2+ under neutral conditions. The contrastive experiments were designed to elucidate the effects of Fe3+, Fe2+ and H2O2 on the morphology of the final products. Irregular and ellipsoidal Fe2O3 structures were obtained by H2O2 oxidation of Fe3+ and Fe2+ respectively. Meanwhile, Fe3O4 nanotubes and nanoparticles were obtained when H2O2 was replaced by NH4HCO3 and urea respectively. The results show that H2O2, Fe3+ and Fe2+ in the reactive system play critical roles in obtaining micrometric cube-like Fe3O4. While, other nanometric Fe2O3 and Fe3O4 particles with tube-like and other morphologies could also be developed by controlling the reaction parameters.", }