Oxidation-induced three-dimensional morphological changes in Ni nanoparticles observed by coherent X-ray diffraction imaging

Three-dimensional structures of Ni nanoparticles undergoing significant morphological changes on oxidation were observed non-destructively using coherent X-ray diffraction imaging. The Ni particles were oxidized into Ni1O1 while forming pores of various sizes internally. For each Ni nanoparticle, on...

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Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 28(2021), Pt 2 vom: 01. März, Seite 505-511
1. Verfasser: Ahn, Kangwoo (VerfasserIn)
Weitere Verfasser: Cho, In Hwa, Kim, Junhyung, Lee, Su Yong, Sung, Daeho, Jung, Chulho, Song, Changyong, Kang, Hyon Chol, Noh, Do Young
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article NiO coherent X-ray diffraction imaging oxidation three-dimensional morphology
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520 |a Three-dimensional structures of Ni nanoparticles undergoing significant morphological changes on oxidation were observed non-destructively using coherent X-ray diffraction imaging. The Ni particles were oxidized into Ni1O1 while forming pores of various sizes internally. For each Ni nanoparticle, one large void was identified at a lower corner near the interface with the substrate. The porosity of the internal region of the agglomerated Ni oxide was about 38.4%. Regions of high NiO density were mostly observed at the outer crust of the oxide or at the boundary with the large voids. This research expands our understanding of general catalytic reactions with direct observation of oxidation-induced nanoscale morphological changes 
650 4 |a Journal Article 
650 4 |a NiO 
650 4 |a coherent X-ray diffraction imaging 
650 4 |a oxidation 
650 4 |a three-dimensional morphology 
700 1 |a Cho, In Hwa  |e verfasserin  |4 aut 
700 1 |a Kim, Junhyung  |e verfasserin  |4 aut 
700 1 |a Lee, Su Yong  |e verfasserin  |4 aut 
700 1 |a Sung, Daeho  |e verfasserin  |4 aut 
700 1 |a Jung, Chulho  |e verfasserin  |4 aut 
700 1 |a Song, Changyong  |e verfasserin  |4 aut 
700 1 |a Kang, Hyon Chol  |e verfasserin  |4 aut 
700 1 |a Noh, Do Young  |e verfasserin  |4 aut 
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