Toward an accurate quantification in atom probe tomography reconstruction by correlative electron tomography approach on nanoporous materials

Mouton, Isabelle; Printemps, Tony; Grenier, Adeline; Gambacorti, N.; Pinna, Elisa; Tiddia, Mariavitalia; Vacca, Annalisa; Mula, Guido

doi:10.1016/j.ultramic.2017.06.007

Cited by 18 publications

(21 citation statements)

References 27 publications

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Section: Catalysts As Porous Materials-nanoporous Aumentioning

confidence: 94%

“…It can also be concluded that electrodeposition is an efficient procedure to fill pores with diameters of ~10 nm. We also note that further work used Ni to successfully fill the pores in npSi and that the correlation between electron tomography and atom probe tomography experiments in these systems allows for more accurate 3D reconstructions [180]. Further experiments were performed on npAu with small amounts of Pt, which is known to stabilize the nanoporous structure, to avoid coarsening in oxidizing environments, and to enhance the (electro)catalytic activity [181,182].…”

Section: Catalysts As Porous Materials-nanoporous Aumentioning

confidence: 99%

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Atom Probe Tomography for Catalysis Applications: A Review

2019

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Atom probe tomography is a well-established analytical instrument for imaging the 3D structure and composition of materials with high mass resolution, sub-nanometer spatial resolution and ppm elemental sensitivity. Thanks to recent hardware developments in Atom Probe Tomography (APT), combined with progress on site-specific focused ion beam (FIB)-based sample preparation methods and improved data treatment software, complex materials can now be routinely investigated. From model samples to complex, usable porous structures, there is currently a growing interest in the analysis of catalytic materials. APT is able to probe the end state of atomic-scale processes, providing information needed to improve the synthesis of catalysts and to unravel structure/composition/reactivity relationships. This review focuses on the study of catalytic materials with increasing complexity (tip-sample, unsupported and supported nanoparticles, powders, self-supported catalysts and zeolites), as well as sample preparation methods developed to obtain suitable specimens for APT experiments.

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Section: Catalysts As Porous Materials-nanoporous Aumentioning

confidence: 94%

Section: Catalysts As Porous Materials-nanoporous Aumentioning

confidence: 99%

Atom Probe Tomography for Catalysis Applications: A Review

2019

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“…For nanoporous materials to be analyzed by APT, it is essential to fill the pores in order to obtain compact materials. This was successfully achieved by electron beam induced deposition for nanoporous gold with pore diameter of 50 nm (Pfeiffer et al, 2015), and by electrochemical filling for nanoporous silicon with pore diameter of 10 nm (Mouton et al, 2017). Electron tomography (ET) utilizes a transmission electron microscope (TEM) for the acquisition of a set of projections at different tilt angles, over as wide a tilt range as possible.…”

Section: Introductionmentioning

confidence: 99%

Supported Porous Nanostructures Developed by Plasma Processing of Metal Phthalocyanines and Porphyrins

et al. 2020

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The large area scalable fabrication of supported porous metal and metal oxide nanomaterials is acknowledged as one of the greatest challenges for their eventual implementation in on-device applications. In this work, we will present a comprehensive revision and the latest results regarding the pioneering use of commercially available metal phthalocyanines and porphyrins as solid precursors for the plasma-assisted deposition of porous metal and metal oxide films and three-dimensional nanostructures (hierarchical nanowires and nanotubes). The most advanced features of this method relay on its ample general character from the point of view of the porous material composition and microstructure, mild deposition and processing temperature and energy constrictions and, finally, its straightforward compatibility with the direct deposition of the porous nanomaterials on processable substrates and device-architectures. Thus, taking advantage of the variety in the composition of commercially available metal porphyrins and phthalocyanines, we present the development of metal and metal oxides layers including Pt, CuO, Fe 2 O 3 , TiO 2 , and ZnO with morphologies ranging from nanoparticles to nanocolumnar films. In addition, we combine this method with the fabrication by low-pressure vapor transport of single-crystalline organic nanowires for the formation of hierarchical hybrid organic@metal/metal-oxide and @metal/metal-oxide nanotubes. We carry out a thorough characterization of the films and nanowires using SEM, TEM, FIB 3D, and electron tomography. The latest two techniques are revealed as critical for the elucidation of the inner porosity of the layers.

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“…The GT is described for each point in the maps in terms of a rigid-body transformation composed of an ortho-normalized rotation matrix and a translation matrix, both in cartesian coordinates. The aligned APT reconstruction ( P final ) obtained after GT, as previously defined, can thus be written in 3D as where T x , y , z and R x , y , z are the translation and the rotation matrix, respectively [see Mouton et al (2017) for more detail].…”

Section: Introductionmentioning

confidence: 99%

Calibration of Atom Probe Tomography Reconstructions Through Correlation with Electron Micrographs

et al. 2019

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Although atom probe tomography (APT) reconstructions do not directly influence the local elemental analysis, any structural inferences from APT volumes demand a reliable reconstruction of the point cloud. Accurate estimation of the reconstruction parameters is crucial to obtain reliable spatial scaling. In the current work, a new automated approach of calibrating atom probe reconstructions is developed using only one correlative projection electron microscopy (EM) image. We employed an algorithm that implements a 2D cross-correlation of microstructural features observed in both the APT reconstructions and the corresponding EM image. We apply this protocol to calibrate reconstructions in a Cu(In,Ga)Se2-based semiconductor and in a Co-based superalloy. This work enables us to couple chemical precision to structural information with relative ease.

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Toward an accurate quantification in atom probe tomography reconstruction by correlative electron tomography approach on nanoporous materials

Cited by 18 publications

References 27 publications

Atom Probe Tomography for Catalysis Applications: A Review

Atom Probe Tomography for Catalysis Applications: A Review

Supported Porous Nanostructures Developed by Plasma Processing of Metal Phthalocyanines and Porphyrins

Calibration of Atom Probe Tomography Reconstructions Through Correlation with Electron Micrographs

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