fig7

Figure 7. XPS analysis of the Co/N@ZS-PDA catalyst, comparing fresh and used samples, is presented for (A) full-range scans, (B) C 1s, (C) N 1s, and (D) Co 2p. ZS: Zr-SBA-15; PDA: polydopamine; XPS: X-ray photoelectron spectroscopy.

Figure 7. XPS analysis of the Co/N@ZS-PDA catalyst, comparing fresh and used samples, is presented for (A) full-range scans, (B) C 1s, (C) N 1s, and (D) Co 2p. ZS: Zr-SBA-15; PDA: polydopamine; XPS: X-ray photoelectron spectroscopy.
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