Fig. 3: Synthesis and characterization of P-Id for a stable modification on AgNP.
From: Electro-activated indigos intensify ampere-level CO2 reduction to CO on silver catalysts
a Synthesis of P-Id. HBTU: 2-(1H-benzotriazol-1-yl)−1,1,3,3-tetramethyluronium hexafluorophosphate; DIPEA: N,N-diisopropylethylamine; DMF: N,N-dimethylformamide. b FTIR spectra of DCId, DODA, and P-Id. c Solid-state 13C NMR spectrum of P-Id. The peaks are assigned to the corresponding carbons labeled in (a). Asteroids denote spinning sidebands. d, e Comparison of CO FE as a function of jtotal (d), and jCO as a function of potential (e) for AgNP, AgNP+DCId, and AgNP+P-Id. Potentials have been 100% iR corrected. The flow cell was operated with 1 M KOH (pH = 14.0 ± 0.2). Data are presented as mean ± s.d. Error bars represent s.d. from measurements of three independent electrodes. Source data are provided as a Source Data file.
