Journal Article

PUBDB-2016-05568

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png In Situ Ptychography of Heterogeneous Catalysts using Hard X-Rays: High Resolution Imaging at Ambient Pressure and Elevated Temperature

Baier, S.Extern* ; Damsgaard, C. D.Extern* ; Scholz, M.DESY* ; Benzi, F.Extern* ; Rochet, A.Extern* ; Hoppe, R.Extern* ; Scherer, T. ; Shi, J. ; Wittstock, A.Extern* ; Weinhausen, B. ; Wagner, J. B. ; Schroer, C.DESY* ; Grunwaldt, J.-D. (Corresponding author)Extern*

2016
Cambridge University Press New York, NY

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Please use a persistent id in citations: doi:10.1017/S1431927615015573

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.

Note: (c) Microscopy Society of America. Post referee full text in progress (embargo 6 months from 25 February 2016).

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Contributing Institute(s):

1. FS-PETRA (FS-PETRA)

Research Program(s):

1. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
2. VH-VI-403 - In-Situ Nano-Imaging of Biological and Chemical Processes (2015_IFV-VH-VI-403) (2015_IFV-VH-VI-403)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2016

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Database coverage:
; Allianz-Lizenz / DFG ; BIOSIS Previews ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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