Four-dimensional imaging of ZnO-coated alumina aerogels by scanning transmission X-ray microscopy and ptychographic tomography

J Wu, X Zhu, DA Shapiro, JRI Lee… - The Journal of …, 2018 - ACS Publications
Functional porous materials are of increasing importance in energy conversion and
catalysis. Improved analysis is needed to guide optimization. Four-dimensional (4D) …

4D Imaging of ZnO-Coated Nanoporous Al2O3 Aerogels by Chemically Sensitive Ptychographic Tomography: Implications for Designer Catalysts

H Yuan, H Yuan, T Casagrande… - ACS Applied Nano …, 2021 - ACS Publications
The 3D chemical structure (4D spectromicroscopy) of nanoporous Al2O3 aerogels coated
with ZnO by atomic layer deposition (ALD) was studied by multienergy scanning …

Evolution of Hierarchically Porous Nickel Alumina Catalysts Studied by X‐Ray Ptychography

S Weber, A Diaz, M Holler, A Schropp… - Advanced …, 2022 - Wiley Online Library
The synthesis of hierarchically porous materials usually requires complex experimental
procedures, often based around extensive trial and error approaches. One common …

Exploring a nanostructured X-ray optical device for improved spatial resolution in laboratory X-ray diffraction imaging

M Yamanashi - Applied Crystallography, 2024 - journals.iucr.org
Analytical methods with wide field range and high spatial resolution are required to observe
the distribution of the crystal structure in micro-regions undergoing macroscopic chemical …

Correlative Multiscale 3D Imaging of a Hierarchical Nanoporous Gold Catalyst by Electron, Ion and X‐ray Nanotomography

Y Fam, TL Sheppard, A Diaz, T Scherer… - …, 2018 - Wiley Online Library
Tomographic imaging of catalysts allows non‐invasive investigation of structural features
and chemical properties by combining large fields of view, high spatial resolution, and the …

Mapping the pore architecture of structured catalyst monoliths from nanometer to centimeter scale with electron and X-ray tomographies

J Becher, TL Sheppard, Y Fam, S Baier… - The Journal of …, 2019 - ACS Publications
The hierarchical pore systems of Pt/Al2O3 exhaust gas aftertreatment catalysts were
analyzed with a collection of correlative imaging techniques to monitor changes induced by …

Image analysis of x-ray microtomograms of Pd–Ag/SiO2 xerogel catalysts supported on Al2O3 foams

S Blacher, A Léonard, B Heinrichs… - Colloids and Surfaces A …, 2004 - Elsevier
In order to preshape and mechanically strengthen, Pd–Ag/SiO2 xerogel catalysts were
carried out in Al2O3 foams (pore-sizes∼ 40μm). The final material consists of a Pd–Ag/SiO2 …

Sparse ab initio x-ray transmission spectrotomography for nanoscopic compositional analysis of functional materials

Z Gao, M Odstrcil, S Böcklein, D Palagin, M Holler… - Science …, 2021 - science.org
The performance of functional materials is either driven or limited by nanoscopic
heterogeneities distributed throughout the material's volume. To better our understanding of …

Z-Contrast tomography: a technique in three-dimensional nanostructural analysis based on Rutherford scatteringElectronic supplementary information (ESI) available …

PA Midgley, M Weyland, JM Thomas… - Chemical …, 2001 - pubs.rsc.org
A method for determining the three-dimensional structure of inorganic specimens using
images formed from Rutherford scattered electrons, at a spatial resolution of 1 nm in all …

X-ray micro-computed tomography and tortuosity calculations of percolating pore networks

NO Shanti, VWL Chan, SR Stock, F De Carlo… - Acta Materialia, 2014 - Elsevier
Synchrotron source X-ray micro-computed tomography was used for non-destructive three-
dimensional (3-D) imaging of porous alumina structures, in which the porosity was induced …