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Issue 6, 2011
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Cd1−xZnxO [0.05 ≤ x ≤ 0.26] synthesized by vapor-diffusion induced hydrolysis and co-nucleation from aqueous metal salt solutions

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Abstract

Nanoparticulate Cd1−xZnxO (x = 0, 0.05–0.26, 1) is synthesized in a simple two-step synthesis approach. Vapor-diffusion induced catalytic hydrolysis of two molecular precursors at low temperature induces co-nucleation and polycondensation to produce bimetallic layered hydroxide salts (M = Cd, Zn) as precursor materials which are subsequently converted to Cd1−xZnxO at 400 °C. Unlike ternary materials prepared by standard co-precipitation procedures, all products presented here containing < 30 mol% Zn2+ ions are homogeneous in elemental composition on the micrometre scale. This measured compositional homogeneity within the samples, as determined by energy dispersive spectroscopy and inductively coupled plasma spectroscopy, is a testimony to the kinetic control achieved by employing slow hydrolysis conditions. In agreement with this observation, the optical properties of the materials obey Vegard's Law for a homogeneous solid solution of Cd1−xZnxO, where x corresponds to the values determined by inductively coupled plasma analysis, even though powder X-ray diffraction shows phase separation into a cubic mixed metal oxide phase and a hexagonal ZnO phase at all doping levels.

Graphical abstract: Cd1−xZnxO [0.05 ≤ x ≤ 0.26] synthesized by vapor-diffusion induced hydrolysis and co-nucleation from aqueous metal salt solutions

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Publication details

The article was received on 09 Nov 2010, accepted on 06 Dec 2010 and first published on 04 Jan 2011


Article type: Paper
DOI: 10.1039/C0DT01558J
Citation: Dalton Trans., 2011,40, 1295-1301
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    Cd1−xZnxO [0.05 ≤ x ≤ 0.26] synthesized by vapor-diffusion induced hydrolysis and co-nucleation from aqueous metal salt solutions

    B. Schwenzer, J. R. Neilson, S. M. Jeffries and D. E. Morse, Dalton Trans., 2011, 40, 1295
    DOI: 10.1039/C0DT01558J

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