fig3

Figure 3. The Pt 4f (A) and O1s (B) XPS spectra of CNTs, 0.3Pt/CNTs-CIW, and 0.3Pt/CNTs-IW. CIW: Colloidal impregnation; CNTs: carbon nanotubes; XPS: X-ray photoelectron spectroscopy.

Figure 3. The Pt 4f (A) and O1s (B) XPS spectra of CNTs, 0.3Pt/CNTs-CIW, and 0.3Pt/CNTs-IW. CIW: Colloidal impregnation; CNTs: carbon nanotubes; XPS: X-ray photoelectron spectroscopy.
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