fig4
Figure 4. (A) Schematic diagram of the synthesis of Pd NPs with different sizes[65]. (B) FE and yield of formic acid at different potentials[65]. Reprinted with permission. Copyright 2017 WILEY[65]. (C) Free energy of COOH* adsorption and CO2 reduction to CO on different crystal planes[82]. (D) Potential dependence of CO selectivity on different sized Pd NPs[82]. Reprinted with permission. Copyright 2015, American Chemical Society[82]. (E) Schematic diagram of the formation of hexagonal palladium NSs and (F) TEM images of palladium NSs with side lengths of 5.1 nm[83]. (G) CO Faraday efficiency of palladium NSs with different side lengths[83]. Reprinted with permission. Copyright 2018, WILEY[83].
