Fig. 2: PEC NO3RR performances of CdS/SSS, Cu/CdS/SSS, and CuOs/CdS/SSS.
From: Direct ammonia and dihydroxyacetone production in an unbiased photoelectrochemical cell
a J-V curves in 0.1 M KNO3 and 10 mM H2SO4. b NH4+ FEs, c yields, and d selectivities. The error bar represents the standard deviation of values calculated from three independent samples. e NH4+ FEs and yields of CuOs/CdS/SSS in various NO3− concentrations at 0.6 VRHE. f Calibration curves for 15NH4+ detection using 1H NMR. Inset upper left: comparison of the ammonia yields and FEs over CuOs/CdS/SSS quantified by the UV−Vis spectra and 1H NMR. Inset bottom right: 1H NMR spectra before and after 15NO3RR reaction. g I-t plots and related FEs on CuOs/CdS/SSS. h FEs and yields during cycle stability measurement on CuOs/CdS/SSS. Each 30 min was taken as one cycle, and fresh electrolyte was replaced in each cycle. i Charge transfer rate constants, j charge recombination rate constants, and k electrochemical impedance spectroscopy for the samples. Z’ and Z” represent as the real and imaginary parts of the Nyquist function, respectively. Source data are provided as a Source Data file.
