Fig. 5
Size-dependent activity and selectivity of Pt NPs in CO2PR. a Correlations between the selectivity for CH4 and surface site proportion as functions of the size of Pt NPs in xPHTSO (x = 1.8, 3.4, 4.3, and 7.0). b Free energy diagrams for CO2 reduction to CH4 by the thermochemical model on Pt(111) surface and Pt55. c Scheme illustration of partial CO-modified 1.8PHTSO through stepwise adsorption and desorption of CO. d CO-TPD results of 1.8PHTSO after CO pulse adsorption and stepwise CO pulse adsorption and He flow desorption at 280 °C. e Performance comparisons of CO2PR between 1.8PHTSO and CO-1.8PHTSO, the RE denotes as the reacted electrons, and CH4 S denotes as the CH4 selectivity
