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Coherent Bragg imaging of 60 nm Au nanoparticles under electrochemical control at the NanoMAX beamline

Björling, Alexander LU ; Carbone, Dina LU ; Sarabia, Francisco J. ; Hammarberg, Susanna LU ; Feliu, Juan M. and Solla-Gullón, José (2019) In Journal of Synchrotron Radiation 26. p.1830-1834
Abstract

Nanoparticles are essential electrocatalysts in chemical production, water treatment and energy conversion, but engineering efficient and specific catalysts requires understanding complex structure-reactivity relations. Recent experiments have shown that Bragg coherent diffraction imaging might be a powerful tool in this regard. The technique provides three-dimensional lattice strain fields from which surface reactivity maps can be inferred. However, all experiments published so far have investigated particles an order of magnitude larger than those used in practical applications. Studying smaller particles quickly becomes demanding as the diffracted intensity falls. Here, in situ nanodiffraction data from 60 nm Au nanoparticles under... (More)

Nanoparticles are essential electrocatalysts in chemical production, water treatment and energy conversion, but engineering efficient and specific catalysts requires understanding complex structure-reactivity relations. Recent experiments have shown that Bragg coherent diffraction imaging might be a powerful tool in this regard. The technique provides three-dimensional lattice strain fields from which surface reactivity maps can be inferred. However, all experiments published so far have investigated particles an order of magnitude larger than those used in practical applications. Studying smaller particles quickly becomes demanding as the diffracted intensity falls. Here, in situ nanodiffraction data from 60 nm Au nanoparticles under electrochemical control collected at the hard X-ray nanoprobe beamline of MAX IV, NanoMAX, are presented. Two-dimensional image reconstructions of these particles are produced, and it is estimated that NanoMAX, which is now open for general users, has the requisites for three-dimensional imaging of particles of a size relevant for catalytic applications. This represents the first demonstration of coherent X-ray diffraction experiments performed at a diffraction-limited storage ring, and illustrates the importance of these new sources for experiments where coherence properties become crucial.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
coherent diffraction imaging, electrocatalysis, nanodiffraction
in
Journal of Synchrotron Radiation
volume
26
pages
5 pages
publisher
International Union of Crystallography
external identifiers
  • pmid:31490177
  • scopus:85071776375
ISSN
0909-0495
DOI
10.1107/S1600577519010385
language
English
LU publication?
yes
id
8df59265-323a-415d-acd0-fd4da47718ae
date added to LUP
2019-09-17 11:03:37
date last changed
2020-09-30 06:23:45
@article{8df59265-323a-415d-acd0-fd4da47718ae,
  abstract     = {<p>Nanoparticles are essential electrocatalysts in chemical production, water treatment and energy conversion, but engineering efficient and specific catalysts requires understanding complex structure-reactivity relations. Recent experiments have shown that Bragg coherent diffraction imaging might be a powerful tool in this regard. The technique provides three-dimensional lattice strain fields from which surface reactivity maps can be inferred. However, all experiments published so far have investigated particles an order of magnitude larger than those used in practical applications. Studying smaller particles quickly becomes demanding as the diffracted intensity falls. Here, in situ nanodiffraction data from 60 nm Au nanoparticles under electrochemical control collected at the hard X-ray nanoprobe beamline of MAX IV, NanoMAX, are presented. Two-dimensional image reconstructions of these particles are produced, and it is estimated that NanoMAX, which is now open for general users, has the requisites for three-dimensional imaging of particles of a size relevant for catalytic applications. This represents the first demonstration of coherent X-ray diffraction experiments performed at a diffraction-limited storage ring, and illustrates the importance of these new sources for experiments where coherence properties become crucial.</p>},
  author       = {Björling, Alexander and Carbone, Dina and Sarabia, Francisco J. and Hammarberg, Susanna and Feliu, Juan M. and Solla-Gullón, José},
  issn         = {0909-0495},
  language     = {eng},
  pages        = {1830--1834},
  publisher    = {International Union of Crystallography},
  series       = {Journal of Synchrotron Radiation},
  title        = {Coherent Bragg imaging of 60 nm Au nanoparticles under electrochemical control at the NanoMAX beamline},
  url          = {http://dx.doi.org/10.1107/S1600577519010385},
  doi          = {10.1107/S1600577519010385},
  volume       = {26},
  year         = {2019},
}