Fig. 2: Anisotropic charge separation behavior.
From: Unveiling the charge transfer dynamics steered by built-in electric fields in BiOBr photocatalysts
a Low magnified, expanded TEM images and schematic illustration indicating CoOx nanoparticles are dominantly photo-deposited on the side faces of a BiOBr platelet, as evidenced by the EDS maps in b, c Overview image and enlarged TEM image showing the photo-deposition of Ag nanoparticles on the (001) basal facets, with a schematic diagram given in the bottom left panel (inset: EDS map). d Left panel: HAADF image recorded at Edge 1 of c showing the aggregation of Ag nanoparticles in a line pattern. The centers of Ag nanoparticles are marked by purple crosses. Right panel: Their positions are plotted in a coordinate system. e Statistical histograms of the distances from the centers of Ag nanoparticles to edge 1 or edge 2, which can be described by a Gaussian profile. f Statistical analysis of the spatial distribution of Ag nanoparticles with respect to the platelet edges after counting more than 50 individual BiOBr platelets from multiple TEM images. Source data are provided as a Source Data file.
