Fig. 5: Mechanism Investigation.
From: Direct ammonia and dihydroxyacetone production in an unbiased photoelectrochemical cell
a DEMS measurements of PEC NO3RR over CuOs/CdS/SSS under light illumination. b, c ATR-FTIR spectra for b Cu/CdS/SSS and c CuOs/CdS/SSS under light illumination. d DMPO-involved EPR spectra of Cu/CdS/SSS, Os/CdS/SSS, and CuOs/CdS/SSS without NO3− under light illumination. e DMPO-involved EPR spectra of CuOs/CdS/SSS without or with NO3− under light illumination (each line is collected after 10 min PEC reaction at 0 VRHE). f In-situ Raman spectroscopy of NO3RR on Cu and CuOs electrocatalysts. g FTIR spectra of isopropanol adsorbed on TiO2 and Ru-Bi2O3/TiO2. Inset shows the related model. h In-situ FTIR spectra of the dynamic oxidation process of isopropanol on Ru-Bi2O3/TiO2 under light illumination for 60 min. Source data are provided as a Source Data file.
