Table 2. Summary of Faradaic Efficiency (FE%) Values of Nano-Bi-180s and Nano-Bi-300s.a.
| nano-Bi-180s | ||||
|---|---|---|---|---|
| V vs RHE | FE% for formate | FE% for CH4 | FE% for CO | FE% for H2 |
| –0.776 | 89.99 | 0 | 2.81 | 9.95 |
| –0.976 | 73.26 | 0.45 | 2.1 | 25.77 |
| –1.176 | 72.73 | 0.75 | 1.78 | 30.31 |
| –1.376 | 42.91 | 0.56 | 0.70 | 59.60 |
| nano-Bi-300s | ||||
|---|---|---|---|---|
| V vs RHE | FE% for formate | FE% for CH4 | FE% for CO | FE% for H2 |
| –0.776 | 89.72 | 0 | 2.76 | 9.25 |
| –0.976 | 80.34 | 0 | 2.97 | 17.59 |
| –1.176 | 70.41 | 0 | 1.73 | 30.7 |
| –1.376 | 43.54 | 0.24 | 0.79 | 57.45 |
a
Summary of Faradaic efficiency (FE%) values for formate, CH4, CO, and H2 with two nano-Bi samples determined by 30 min of chronoamperometry under a constant CO2 flow at four different potential bias conditions (−0.776, −0.976, −1.176, and −1.376 V vs. RHE)