Nanoscale crystallographic characterization of nanoporous catalyst by TKD

Barroo, Cédric; Akey, Austin J.; Bell, David C.

doi:10.1016/j.apsusc.2019.05.187

Nanoscale crystallographic characterization of nanoporous catalyst by TKD

Journal Article · Fri May 17 00:00:00 EDT 2019 · Applied Surface Science

DOI:https://doi.org/10.1016/j.apsusc.2019.05.187· OSTI ID:1595089

^[1]; Akey, Austin J. ^[2]; Bell, David C. ^[2]

Harvard Univ., Cambridge, MA (United States); Harvard University
Harvard Univ., Cambridge, MA (United States)

To better understand the structure-reactivity relationships of self-supported nanoporous catalysts, a nanoscale characterization of the materials is required. Transmission Kikuchi Diffraction (TKD), or transmission electron backscatter diffraction (t-EBSD), is a recent technique used to analyze the grain crystallography and morphology of thin films and nanometer-scale materials. Using a conventional EBSD detector in a FIB-SEM instrument, we investigate nanoporous gold (npAu) samples with ligament size in the 50-70 nm range. Grains with diameters below 50 nm can be clearly resolved, but also welldefined grain boundaries extending over 3 to 4 pixels, proving the high resolution of the method. The presence of contaminations during sample preparation by FIB milling is also discussed. We conclude the results provide deeper insight than conventional EBSD technique can alone.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC); Harvard Univ., Cambridge, MA (United States)

Sponsoring Organization:: Belgian American Educational Foundation (BAEF); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Wallonie-Bruxelles International (WBI) (Belgium)

Grant/Contract Number:: SC0012573

OSTI ID:: 1595089

Alternate ID(s):: OSTI ID: 1691739

Journal Information:: Applied Surface Science, Journal Name: Applied Surface Science Journal Issue: C Vol. 487; ISSN 0169-4332

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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Nanocrystallography
Nanoporous gold
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Transmission EBSD
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Nanoscale crystallographic characterization of nanoporous catalyst by TKD

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