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Soldatov MA, Martini A, Bugaev AL, Pankin I, Medvedev PV, Guda AA, Aboraia AM, Podkovyrina YS, Budnyk AP, Soldatov AA, Lamberti C. The insights from X-ray absorption spectroscopy into the local atomic structure and chemical bonding of Metal–organic frameworks. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Current Status of Single Particle Imaging with X-ray Lasers. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8010132] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Baier S, Damsgaard CD, Scholz M, Benzi F, Rochet A, Hoppe R, Scherer T, Shi J, Wittstock A, Weinhausen B, Wagner JB, Schroer CG, Grunwaldt JD. In Situ Ptychography of Heterogeneous Catalysts using Hard X-Rays: High Resolution Imaging at Ambient Pressure and Elevated Temperature. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2016; 22:178-188. [PMID: 26914998 DOI: 10.1017/s1431927615015573] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new closed cell is presented for in situ X-ray ptychography which allows studies under gas flow and at elevated temperature. In order to gain complementary information by transmission and scanning electron microscopy, the cell makes use of a Protochips E-chipTM which contains a small, thin electron transparent window and allows heating. Two gold-based systems, 50 nm gold particles and nanoporous gold as a relevant catalyst sample, were used for studying the feasibility of the cell. Measurements showing a resolution around 40 nm have been achieved under a flow of synthetic air and during heating up to temperatures of 933 K. An elevated temperature exhibited little influence on image quality and resolution. With this study, the potential of in situ hard X-ray ptychography for investigating annealing processes of real catalyst samples is demonstrated. Furthermore, the possibility to use the same sample holder for ex situ electron microscopy before and after the in situ study underlines the unique possibilities available with this combination of electron microscopy and X-ray microscopy on the same sample.
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Affiliation(s)
- Sina Baier
- 1Institute for Chemical Technology and Polymer Chemistry,Karlsruhe Institute of Technology,76131 Karlsruhe,Germany
| | - Christian D Damsgaard
- 2Center for Electron Nanoscopy,Technical University of Denmark,2800 Kgs. Lyngby,Denmark
| | - Maria Scholz
- 4Deutsches Elektronen-Synchrotron DESY,Notkestr. 85,22607 Hamburg,Germany
| | - Federico Benzi
- 1Institute for Chemical Technology and Polymer Chemistry,Karlsruhe Institute of Technology,76131 Karlsruhe,Germany
| | - Amélie Rochet
- 1Institute for Chemical Technology and Polymer Chemistry,Karlsruhe Institute of Technology,76131 Karlsruhe,Germany
| | - Robert Hoppe
- 5Institute of Structural Physics,Technische Universität Dresden,01062 Dresden,Germany
| | - Torsten Scherer
- 6Institute of Nanotechnology,Karlsruhe Institute of Technology,76021 Karlsruhe,Germany
| | - Junjie Shi
- 8Angewandte und Physikalische Chemie,University of Bremen,28359 Bremen,Germany
| | - Arne Wittstock
- 8Angewandte und Physikalische Chemie,University of Bremen,28359 Bremen,Germany
| | | | - Jakob B Wagner
- 2Center for Electron Nanoscopy,Technical University of Denmark,2800 Kgs. Lyngby,Denmark
| | | | - Jan-Dierk Grunwaldt
- 1Institute for Chemical Technology and Polymer Chemistry,Karlsruhe Institute of Technology,76131 Karlsruhe,Germany
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Eriksson M, van der Veen JF, Quitmann C. Diffraction-limited storage rings - a window to the science of tomorrow. JOURNAL OF SYNCHROTRON RADIATION 2014; 21:837-42. [PMID: 25177975 DOI: 10.1107/s1600577514019286] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 08/28/2014] [Indexed: 05/20/2023]
Abstract
This article summarizes the contributions in this special issue on Diffraction-Limited Storage Rings. It analyses the progress in accelerator technology enabling a significant increase in brightness and coherent fraction of the X-ray light provided by storage rings. With MAX IV and Sirius there are two facilities under construction that already exploit these advantages. Several other projects are in the design stage and these will probably enhance the performance further. To translate the progress in light source quality into new science requires similar progress in aspects such as optics, beamline technology, detectors and data analysis. The quality of new science will be limited by the weakest component in this value chain. Breakthroughs can be expected in high-resolution imaging, microscopy and spectroscopy. These techniques are relevant for many fields of science; for example, for the fundamental understanding of the properties of correlated electron materials, the development and characterization of materials for data and energy storage, environmental applications and bio-medicine.
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Affiliation(s)
- Mikael Eriksson
- MAX IV Laboratory, Lund University, POB 118, Lund 22100, Sweden
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Frenkel AI, van Bokhoven JA. X-ray spectroscopy for chemical and energy sciences: the case of heterogeneous catalysis. JOURNAL OF SYNCHROTRON RADIATION 2014; 21:1084-1089. [PMID: 25177997 DOI: 10.1107/s1600577514014854] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/23/2014] [Indexed: 06/03/2023]
Abstract
Heterogeneous catalysis is the enabling technology for much of the current and future processes relevant for energy conversion and chemicals synthesis. The development of new materials and processes is greatly helped by the understanding of the catalytic process at the molecular level on the macro/micro-kinetic time scale and on that of the actual bond breaking and bond making. The performance of heterogeneous catalysts is inherently the average over the ensemble of active sites. Much development aims at unravelling the structure of the active site; however, in general, these methods yield the ensemble-average structure. A benefit of X-ray-based methods is the large penetration depth of the X-rays, enabling in situ and operando measurements. The potential of X-ray absorption and emission spectroscopy methods (XANES, EXAFS, HERFD, RIXS and HEROS) to directly measure the structure of the catalytically active site at the single nanoparticle level using nanometer beams at diffraction-limited storage ring sources is highlighted. The use of pump-probe schemes coupled with single-shot experiments will extend the time range from the micro/macro-kinetic time domain to the time scale of bond breaking and making.
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Affiliation(s)
- Anatoly I Frenkel
- Department of Physics, Yeshiva University, 245 Lexington Avenue, New York, NY 10016, USA
| | - Jeroen A van Bokhoven
- Department of Chemistry and Bioengineering, ETH Zürich, Wolfgang-Paulistrasse 10, Zürich 8093, Switzerland
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