fig9

Figure 9. Activity test results and properties analysis of catalysts. (A) XRD graphs of Cu, CuBO_X, CuCo₅BO_X, and CoBO_X (B) The CO₂ adsorption energy of samples. (C) The reaction test of various catalysts (Reaction condition: 20 mg weight, 300 °C reaction temperature, 50 W m^-2 light intensity. (D) Photocurrent density of CuCo₅O_X and CuCo5BO_X. (E) CO production rate with and without light at various temperatures. (F) CO production rate of samples treated at different conditions (A: vacuum drying for 12 h; B: dry in the air at 25 °C for 4 h G: leave at room temperature for one year). Reproduced with permission from Ref.^[68].