fig5

Figure 5. (A) Full X-ray photoelectron spectroscopy (XPS) spectrum of CeO2@void@C. (B) High-resolution XPS spectrum and simulation of Ce 3d for CeO2@void@C.
Figure 5. (A) Full X-ray photoelectron spectroscopy (XPS) spectrum of CeO2@void@C. (B) High-resolution XPS spectrum and simulation of Ce 3d for CeO2@void@C.
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