Fig. 4: Characterization of surface Au–O species formed by H2O decomposition. | Nature Communications

Fig. 4: Characterization of surface Au–O species formed by H2O decomposition.

From: Molecular-level insight into photocatalytic CO2 reduction with H2O over Au nanoparticles by interband transitions

Fig. 4: Characterization of surface Au–O species formed by H2O decomposition.

a 1H ssMAS-NMR spectra of Au samples before (black curve) and after CO2RR (3 h reaction, red curve). b TGA-DTG curves of the fresh Au photocatalyst. c In situ FT-IR spectra of the photocatalytic CO2 reduction with H2O on Au. FT-IR spectra were recorded every 5 min from bottom to top. d Quasi in situ XPS (Au 4 f) of Au NPs at photocatalytic reaction times of 0 (fresh), 1, 2, and 3 h. e LSV curves of fresh and used (3 h reaction) Au catalyst. f Raman spectra of Au NPs at photocatalytic reaction times of 0 (fresh), 1, 2, and 3 h.

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