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. 2022 Jan 28;12:1584. doi: 10.1038/s41598-022-05652-7

Figure 4.

Figure 4

XPS spectra of elemental scan of C1s on BSL-BC (a) before and after adsorption of (b) Pb2+ or (c) Cd2+; XPS spectra of elemental scan of O1s on BSL-BC (d) before and after adsorption of (e) Pb2+ or (f) Cd2+; (g) XPS spectra of elemental scan of Pb4f. on BSL-BC after Pb2+ adsorption; (h) XPS spectra of elemental scan of Pb4f. on BSL-BC after Cd2+ adsorption.