Fig. 5: Comparison of adsorption characteristics. | Nature Communications

Fig. 5: Comparison of adsorption characteristics.

From: Hydrogen spillover-driven synthesis of high-entropy alloy nanoparticles as a robust catalyst for CO2 hydrogenation

Fig. 5

FTIR data obtained during the TPD of adsorbed CO on (a) Pd/TiO2 and (b) CoNiCuRuPd/TiO2. In these calculations, a correction coefficient of 1.074 was applied to adjust the vibrational frequency of CO adsorbed on the surface of an fcc Pd(111) slab model to the experimental value of 2091 cm−1 58. c Ead values calculated for CO and H on an upper fcc surface (●), an fcc hollow (■), and an hcp hollow (▲) for CoNiCuRuPd(111) and for pure metal slabs (Co(001), Cu(111), Ni(111), Ru(001), and Pd(111)). Here, HEAave (111) and AveCoNiCuRuPd are the averages of the Ea values for CO and H adsorption on the CoNiCuRuPd HEA and on the pure metal slabs.

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