Journal
CRYSTENGCOMM
Volume 13, Issue 7, Pages 2727-2733Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ce00947d
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Funding
- National Basic Research Program of China [2007CB613305]
- China-Japan cooperation project of science and technology [2009DFA61090]
- National Natural Science Foundation of China [50732004, 20773064, 20811140087]
- Natural Science Foundation of Jiangsu Province [BK2008028]
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Monodisperse iron oxide micro-, nanospindles and nanospheres with controlled sizes were synthesized through a facile solvothermal process. The products are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, BET surface area measurements, scanning electron microscopy and high-resolution transmission electron microscopy. The growth mechanism of spindle-like or spherical iron oxides with controlled size is discussed. Different content of Cl- in the reaction medium can also influence the nucleation rate through the decomposition of Fe8O8(OH)(8)Cl-1.35 and thus control the particle sizes. The as-prepared iron oxides exhibit size dependence in their physical properties such as UV-vis absorption spectra and IR spectra. In addition, the removal capacities of Cr(VI) of the as-prepared iron oxides are investigated. The better performances of the as-prepared iron oxides than commercial iron oxides could be attributed to the larger surface area and rough surface structure.
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