Multimodal imaging of cubic Cu₂O@Au nanocage formation via galvanic replacement using X-ray ptychography and nano diffraction.

ABSTRACT: Being able to observe the formation of multi-material nanostructures in situ, simultaneously from a morphological and crystallographic perspective, is a challenging task. Yet, this is essential for the fabrication of nanomaterials with well-controlled composition exposing the most active crystallographic surfaces, as required for highly active catalysts in energy applications. To demonstrate how X-ray ptychography can be combined with scanning nanoprobe diffraction to realize multimodal imaging, we study growing Cu₂O nanocubes and their transformation into Au nanocages. During the growth of nanocubes at a temperature of 138 °C, we measure the crystal structure of an individual nanoparticle and determine the presence of (100) crystallographic facets at its surface. We subsequentl

SUBMITTER: Grote L 

PROVIDER: S-EPMC9823101 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature