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. 2022 Jul 4;12:11295. doi: 10.1038/s41598-022-15557-0

Figure 4.

Figure 4

(ac) STEM–EELS images and O K-edge ELNES spectra of (a) ZrO2, (b) ZrO2-B, and (c) Cr@ZrO2 NPs. Red and blue cones indicate the probing sites at the surface and the core of each NP, respectively.