2020
DOI: 10.1039/c9sc04670d
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Ptychographic X-ray tomography reveals additive zoning in nanocomposite single crystals

Abstract: Ptychographic X-ray computed tomography visualizes the effects crystallography and solution composition have on occlusion motif and occlusion density of crystalline nanocomposites.

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Cited by 18 publications
(16 citation statements)
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References 59 publications
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“…It is envisaged that our experimental approach can be used to study processes such as weathering and biomineralization, which will ultimately enable us to predict and control crystallization within porous media. We also expect that the continued development of techniques such as X-ray ptychography [67,68] will offer in situ measurements at enhanced spatial resolution, thereby permitting the observation of earlier stages of crystallization.…”
Section: Discussionmentioning
confidence: 99%
“…It is envisaged that our experimental approach can be used to study processes such as weathering and biomineralization, which will ultimately enable us to predict and control crystallization within porous media. We also expect that the continued development of techniques such as X-ray ptychography [67,68] will offer in situ measurements at enhanced spatial resolution, thereby permitting the observation of earlier stages of crystallization.…”
Section: Discussionmentioning
confidence: 99%
“…This in turn provides sensitivity to mass density, which may in principle be used to retrieve chemical information. [ 39 , 40 , 41 , 42 ] The application of PXCT in catalysis research is still at a relatively early stage, although the potential of the method is clearly shown in several studies of textural/pore structures [ 32 , 33 , 34 , 35 , 36 , 43 , 44 , 45 , 46 ] or chemical heterogeneity. [ 32 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ] Recently, PXCT studies on PTFE membranes could derive porosity and tortuosity information, which was then used to calculate diffusion coefficients and permeability.…”
Section: Introductionmentioning
confidence: 99%
“…Amaranth (a red dye) and Fast Green (a blue dye) both occluded at levels that are 10 times higher than in water alone, and the crystals exhibit pseudo-(001) faces that are characteristic of preferential interaction with the obtuse steps (Figure a–d,m). The Fast Green molecules also exhibit an intra-sectorial zoning effect ,, (Figure d), and SEM images show that there is no relationship between the zoning pattern and the morphology of the crystals (inset in Figure d). Reactive Green (a blue/green dye) was incorporated at levels 11 times higher than in the pure aqueous system and yielded platonic calcite crystals (Figure e,f,m).…”
Section: Resultsmentioning
confidence: 98%