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Synthesis of novel mesoporous Al2O3 microspheres with flower-like structure

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Liu H., Lu G., Guo Y., Wang Y., Guo Y.

Open Chemistry

2009

vol. 7

issue 4

794-802

Using glucose as a structuring additive and aluminium nitrate as the Al precursor, a novel kind of mesoporous Al2O3 microspheres with flower-like structure were synthesized hydrothermally at 180°C for 20 h. When the synthesis temperature was lowered to 140°C, the carambola-like Al2O3 can be synthesized. This approach is convenient and simple, and flower-like Ce-Al2O3 and La-Al2O3 spheres have also been prepared in this way. It may be applied to synthesize other metal oxides when suitable precursor salts are used. From an analysis of the experimental results, a mechanism for the formation of the flower-like Al2O3 spheres has been proposed and discussed. [...]

Simple hydrothermal synthesis of Fe3O4-PEG nanocomposite

100%

Junejo Y., Baykal A., Sözeri H.

Open Chemistry

2013

vol. 11

issue 9

1527-1532

Abstract We report a one-step hydrothermal synthesis of Fe3O4 nanoparticles coated with Polyethyleneglycol (PEG). The formation of the Fe3O4 core and the polymer coating took place simultaneously. Fe3O4/polyethylene glycol (PEG) magnetic nanocomposite with a core-shell structure with a 17±7 nm crystallite size prepared by simple hydrothermal method. VSM ( Vibrating Sample Magnetometer) analysis proved the superparamagnetic character of the nanocomposite. Graphical abstract [...]

Nax−yHyTi2−xFexO4·nH2O nanosheets with lepidocrocite-like layered structure synthesized by hydrothermal treatment of ilmenite sand

88%

Jardim P., Mancic L., Marinkovic B., Milosevic O., Rizzo F.

Open Chemistry

2011

vol. 9

issue 3

415-421

Nax−yHyTi2−xFexO4·nH2O nanosheets with lepidocrocite-like layered structure were produced through alkaline hydrothermal treatment at very low temperatures (130°C) from ilmenite sand. The crystal structure, morphology and optical properties were investigated by X-Ray diffraction, transmission electron microscopy, selected area electron diffraction, energy dispersive spectroscopy and UV-Vis spectroscopy. The product shows leaf-like nanosheet morphology with thickness <30 nm and lengths <1 µm. Three lepidocrocite-like titanates (Imm2 space group) with similar a and c lattice parameters but different interlayer distances (b/2) were identified. This appears to be the first preparation of lepidocrocite-like layered nanosheets by a simple, energy efficient (low temperature) and low cost (starting from mineral sand) procedure.

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3 Open Chemistry

1 2013

1 2011

1 2009

1 Baykal A.

1 Guo Y.

1 Jardim P.

1 Junejo Y.

1 Liu H.

1 Lu G.

1 Mancic L.

1 Marinkovic B.

1 Milosevic O.

1 Rizzo F.

1 Sözeri H.

1 Wang Y.

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Synthesis of novel mesoporous Al2O3 microspheres with flower-like structure

Simple hydrothermal synthesis of Fe3O4-PEG nanocomposite

Nax−yHyTi2−xFexO4·nH2O nanosheets with lepidocrocite-like layered structure synthesized by hydrothermal treatment of ilmenite sand