Abstract
We show that X-ray diffraction of δ-MnO2 nanoparticles is sensitive to the lognormal distribution of the crystallite size and to the strain gradient across the nanosheet.
Highlights
Marafatto et al.[1] used laboratory powder X-ray diffraction (XRD) to determine the layer and interlayer structures and lateral size of δ-MnO2 nanosheets synthesized at pH 6, 8 and 11
The structures were obtained by fitting full XRD patterns in the 30° < 2θ(CuKα) < 75° interval, which includes the [20,11] and 02,31 hk scattering bands
The lateral size was estimated from the diameter of the coherent scattering domains (CSDs) deduced from the modeling of the [20,11] band
Summary
Marafatto et al.[1] used laboratory powder X-ray diffraction (XRD) to determine the layer and interlayer structures and lateral size of δ-MnO2 nanosheets synthesized at pH 6, 8 and 11. It is shown that X-ray diffraction is sensitive to the lognormal distribution of the δ-MnO2 crystallite size and to the strain gradient across the nanosheet.
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