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- W2010051408 abstract "In this paper, a magnetic adsorbent of iron oxide (Fe2O3) with a chestnut-like amorphous-core/γ-phase-shell hierarchical nanostructure (CAHN) has been synthesized in a rationally designed chemical reaction system, where the decomposition rate of Fe(CO)5 is controlled by the CO generated from the decomposition of N,N-dimethylformamide under the assistance of the hydrolysis of SnCl2·2H2O. By utilizing the current chemistry equilibrium dynamics, it is possible to kinetically modulate the nucleation and subsequent growth of Fe2O3 to form chestnut-like hierarchical nanostructures, in which single crystalline γ-Fe2O3 nanorods, with a diameter of 20 nm and a length of 300 nm, radially grow from the surfaces of amorphous and porous Fe2O3 sub-microspheres. The detailed possible formation mechanism of the Fe2O3 CAHNs is proposed according to the experimental results. The as-obtained Fe2O3 CAHNs show a strong adsorption capability for As(V), with a maximum adsorption capacity of 137.5 mg g−1, because of both the specific surface area, which can be as large as 143.12 m2 g−1, and the heterogeneous surface properties. Furthermore, their ferromagnetic properties make them easy to separate from water by magnetic separation. The adsorption process obeys the Freundlich isotherm model well, but not the Langmuir model, suggesting that a multilayered adsorption occurs on the surface of the Fe2O3 CAHNs. Our work may shed light on the design and preparation of high performance 3D hierarchically nanostructured adsorbents." @default.
- W2010051408 created "2016-06-24" @default.
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- W2010051408 date "2011-01-01" @default.
- W2010051408 modified "2023-09-29" @default.
- W2010051408 title "Solvent-mediated synthesis of magnetic Fe2O3 chestnut-like amorphous-core/γ-phase-shell hierarchical nanostructures with strong As(v) removal capability" @default.
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- W2010051408 doi "https://doi.org/10.1039/c0jm03726e" @default.
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