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Issue 4, 2002
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New (Ni, Co)-based layered double hydroxides with intercalated oxometalate (Mo, W) species, obtained by chimie douce reactions

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Abstract

Layered double hydroxides (LDHs), containing intercalated oxometalate (Mo, W) species, were obtained by chimie douce reactions from NaNi1 − yCoyO2 cobalt substituted sodium nickelates (0.10 ≤ y ≤ 0.40). The X-ray diffraction (XRD), infrared (IR) and extended X-ray absorption fine structure (EXAFS) studies show that, in both cases, M2O72− anions (M[double bond, length as m-dash]Mo, W), made of corner-sharing tetrahedra, are intercalated. In these MO4 tetrahedra, the M–O bond with the bridging oxygen is elongated compared to the other ones, and the M–O–M angle is close to 115°. Oxygen atoms belonging to water molecules are pointing to some faces of the MO4 tetrahedra. The presence of such peculiar intercalated species, as well as the existence of an hydrogen bond network, leads to local distortions within the slabs, which entails a “turbotratic type” shape of the XRD patterns.

Graphical abstract: New (Ni, Co)-based layered double hydroxides with intercalated oxometalate (Mo, W) species, obtained by chimie douce reactions

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Publication details

The article was received on 29 Aug 2001, accepted on 16 Jan 2002 and first published on 13 Feb 2002


Article type: Paper
DOI: 10.1039/B107791K
Citation: J. Mater. Chem., 2002,12, 1035-1043
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    New (Ni, Co)-based layered double hydroxides with intercalated oxometalate (Mo, W) species, obtained by chimie douce reactions

    C. Vaysse, L. Guerlou-Demourgues, A. Demourgues, F. Lazartigues, D. Fertier and C. Delmas, J. Mater. Chem., 2002, 12, 1035
    DOI: 10.1039/B107791K

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