Journal ArticleDOI
Synchrotron Powder Diffraction at P02.1 at PETRA III: From Electron Density Distributions to in situ Total Scattering
Ann-Christin Dippel,Niels Bindzus,Dipankar Saha,Jan Torben Delitz,Hanns-Peter Liermann,Nanna Wahlberg,Jacob Becker,Espen Drath Bøjesen,Bo B. Iversen +8 more
TLDR
In this article, high-resolution powder diffraction at PETRA III (DESY) was used to study charge density distributions from powder patterns and atomic rearrangements followed in situ during the formation of metallic and oxide nanoparticles in solution.Abstract:
The excellent photon beam quality provided at 3rd generation synchrotron sources opens up new opportunities in materials chemistry using X-ray powder diffraction. Techniques that cover the range from very detailed structure analysis to the observation of rapid structural changes during chemical reactions in real time have become viable. Recent experiments carried out at the High Resolution Powder Diffraction Beamline P02.1 at PETRA III (DESY) demonstrate how to effectively exploit the highly collimated, very intense X-rays of high energies for chemistry and materials science. Two studies are described in detail, which illustrate the outstanding performance of the instrument: the determination of charge density distributions from powder patterns, and atomic rearrangements followed in situ during the formation of metallic and oxide nanoparticles in solution.read more
Citations
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Journal ArticleDOI
In situ X-ray diffraction environments for high-pressure reactions
Bjarne R. S. Hansen,Kasper T. Møller,Mark Paskevicius,Ann-Christin Dippel,Peter Walter,Colin J. Webb,Claudio Pistidda,Nils Bergemann,Martin Dornheim,Thomas Klassen,Jens-Erik Jørgensen,Torben R. Jensen +11 more
TL;DR: In this paper, a case study of powder X-ray diffraction with high hydrogen pressure is presented, where a metal hydride hydrogen compressor is mounted in a closed system, allowing reuse of the hydrogen gas.
Journal ArticleDOI
Structural Analysis of Molecular Materials Using the Pair Distribution Function.
TL;DR: An overview of atomic pair distribution function (PDF) analysis applied to the study of molecular materials can be found in this paper, where an overview of applications toward a wide variety of molecular compounds (organic and inorganic) and systems with molecular components is presented.
Journal ArticleDOI
Local structures of perovskite dielectrics and ferroelectrics via pair distribution function analyses
TL;DR: The pair distribution function (PDF) method as mentioned in this paper provides a useful way of characterizing the diverse and richly complex local structures in perovskite dielectric and ferroelectric materials.
Journal ArticleDOI
Formation Mechanisms of Pt and Pt3Gd Nanoparticles under Solvothermal Conditions: An in Situ Total X-ray Scattering Study
TL;DR: Using in situ total X-ray scattering and pair distribution function (PDF) analysis with a time resolution of 1 s, Wang et al. as discussed by the authors unravel the formation mechanisms of Pt and Pt3Gd nanoparticles under solvothermal conditions.
Journal ArticleDOI
Synchrotron powder diffraction of silicon: high‐quality structure factors and electron density
TL;DR: A physically sound procedure for evaluating the standard deviation of powder-derived structure factors has been applied and permits an experimental modelling of not only the valence electron density but also the core deformation in silicon, establishing an increase of the core density upon bond formation in crystalline silicon.
References
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PDFfit2 and PDFgui: computer programs for studying nanostructure in crystals
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The Role of Hydrothermal Synthesis in Preparative Chemistry
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Journal ArticleDOI
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