Fig. 5: Mechanistic investigation with XPS analysis.

XPS spectra of a O 1s, b N1s, and d Ag 3d for JNM-100-AO (before adsorption of Au³⁺) and JNM-100-AO-Au(III) (adsorbed Au³⁺ samples). c XPS spectra of Au 4 f for JNM-100-Au(III) and JNM-100-AO-Au(III).