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Issue 38, 2011
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Mg/Al-CO3 layered double hydroxide nanorings

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Mg/Al-CO3 Layered Double Hydroxide (LDH) nanorings with a 750 nm exterior diameter and 250 nm interior diameter were synthesized in an organic/water solvent system via a urea hydrolysis method, using Mg10(OH)18Cl2·5H2O nanowires as precursors. X-Ray diffraction and Fourier-transform infrared spectroscopy clearly revealed the nanorings to comprise Mg/Al-CO3 LDH. The character of the precursor materials and the ratio of organic solvents to water used for reaction played crucial roles in determining the final ring-like morphology. A possible mechanism was proposed for the LDH nanoring formation. The unique LDH nanorings exposed a higher specific surface area and larger pore volume than plate-like and flower-like analogues, and thus were further explored for their catalytic activity using the Knoevenagel reaction between benzaldehyde and diethyl malonate as a probe reaction. The ring-like structure displayed a significantly enhanced catalytic performance above other analogues.

Graphical abstract: Mg/Al-CO3 layered double hydroxide nanorings

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Publication details

The article was received on 13 May 2011, accepted on 07 Jul 2011 and first published on 16 Aug 2011

Article type: Paper
DOI: 10.1039/C1JM12129D
Citation: J. Mater. Chem., 2011,21, 14741-14746
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    Mg/Al-CO3 layered double hydroxide nanorings

    M. Yang, J. Liu, Z. Chang, G. R. Williams, D. O'Hare, X. Zheng, X. Sun and X. Duan, J. Mater. Chem., 2011, 21, 14741
    DOI: 10.1039/C1JM12129D

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