Fig. 3: Catalytic performance of NH3 photosynthesis on alkaline-earth oxide clusters.
From: Subnanometric alkaline-earth oxide clusters for sustainable nitrate to ammonia photosynthesis
a Catalytic efficiency tests showing the enhancement of operando construction of alkaline-earth oxide clusters on TNS surfaces. b Reaction parameter regulation for optimized NH4+ photosynthesis rates on TNS and BaONCs-TNS respectively. c, d Quantitative isotope-labeled 15NO3− study verifying the fed NO3− as the source for the prodcuced NH3. Inset: raw ion chromatography (IC) spectra for 14NO3−/15NO3− reduction (c) and 14NH4+/15NH4+ generation (d) respectively. The y-axis of c, d depict the reaction rates for NO3− reduction and NH4+ production respectively. The inset images are the raw IC data for 14NO3−/15NO3− (c) and 14NH4+/15NH4+ (d) respectively. The error bar was drawn based on the calculated standard error of two parallel tests.
