Table 1. NRR Rates Obtained with the Utilization Nitrogen/Argon Mixture or Atmospheric Air as a Nitrogen Source in the PEC Regime. NRR rates for a solely electrochemical or photochemical process are also included.
| catalyst | conditions | NH3 yield (μg h–1 mgcat–1) | |
|---|---|---|---|
| Au grating/TiB2@AuNPs | light (PEC NRR)a | 535.2 | |
| PEC NRR | argon/N2 (10/90) | 525.8 | |
| argon/N2 (20/80) | 502.4 | ||
| argon/N2 (30/70) | 474.9 | ||
| argon/N2 (50/50) | 386.3 | ||
| argon/N2 (70/30) | 248.6 | ||
| argon/N2 (80/20) | 144.5 | ||
| argon/N2 (90/10) | 58.5 | ||
| argon | 0 | ||
| air | 491.3 | ||
| dark (electrochemical NRR)a | 43.7 | ||
| photocatalytic experimentsa | 87.5 | ||
a
N2-saturated solution; PEC regime: sunlight simulation, −0.2 V vs RHE, 1 h.