Fig. 2: Microstructure of PdCu@Cu2O and its redox dynamics. | Nature Communications

Fig. 2: Microstructure of PdCu@Cu2O and its redox dynamics.

From: Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis

Fig. 2

a STM images of PdCu@Cu2O with  >1.0 ML Cu. b DFT-optimized structures of PdCu@Cu2O. c The difference in catalytic performance of PdCu@Cu2O (Cu/Pd =1) nanosheets caused by the feeding sequence. d Exposure of PdCu@Cu2O (~1.0 ML Cu2O) with defects to 1.0 × 10−6 mbar H2 at 300 K. e PhC≡CH adsorption on surface of PdCu@Cu2O (~1.0 ML Cu2O). f Exposure PdCu@Cu2O (~1.0 ML Cu2O) with adsorbed PhC≡CH to 1.0 × 10−6 mbar H2 at 300 K. Reaction conditions: 10 mL ethanol; 2 μmol Pd; 4 mmol PhC≡CH; 303 K; 0.1 MPa H2. Scanning parameters: a Vs = −0.1 V, I = 1.0 nA; d Vs = −0.2 V, I = 0.5 nA. e Vs = −1.0 V, I = 0.1 nA; f Vs = 1.0 V, I = 0.1 nA.

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