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Operando 3D imaging of defects dynamics of twinned-nanocrystal during catalysis
- Source :
- Journal of physics. Condensed matter : an Institute of Physics journal. 33(27)
- Publication Year :
- 2021
-
Abstract
- Using operando Bragg coherent x-ray diffraction imaging, we visualised three-dimensionally a single twinned-gold nanocrystal during the CO oxidation reaction. We describe the defect dynamics process occurring under operating conditions and indicate the correlation between the nucleation of highly strained regions at the surface of the nanocrystal and its catalytic activity. Understanding the twinning deformation mechanism sheds light on the creation of active sites, and could well contribute to the understanding of the catalytic behaviour of other catalysts. With the start-up of 4th generation synchrotron sources, we anticipate that coherent hard x-ray diffraction imaging techniques will play a major role in imaging in situ chemical processes.
- Subjects :
- Diffraction
Materials science
Nucleation
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Synchrotron
law.invention
Catalysis
Gold nanocrystal
Nanocrystal
Deformation mechanism
law
Chemical physics
0103 physical sciences
General Materials Science
010306 general physics
0210 nano-technology
Crystal twinning
Subjects
Details
- ISSN :
- 1361648X
- Volume :
- 33
- Issue :
- 27
- Database :
- OpenAIRE
- Journal :
- Journal of physics. Condensed matter : an Institute of Physics journal
- Accession number :
- edsair.doi.dedup.....536c0a2a981fd2652c46e68d31719298