Fig. 1: Performance of the system demonstrating chemically induced driving force system in an alkaline electrolyte. | Nature Communications

Fig. 1: Performance of the system demonstrating chemically induced driving force system in an alkaline electrolyte.

From: Self-driven propylene epoxidation on modified titanium silicalite-1 by in situ generated hydrogen peroxide

Fig. 1

a Schematic of the unassisted H2O2 production system showing a transmission electron microscopy image of the O2 reduction catalyst (graphitic ordered mesoporous carbon, GOMC) and scanning electron microscopy image of the formaldehyde oxidation catalyst (copper nanowires on copper foam, CuNW/CF). b O2 reduction activity of GOMC and c Faradaic efficiency (FE) of H2O2 formation over GOMC determined at 0.45 VRHE in the presence and absence of the gas-diffusion electrode in 0.1 M sodium phosphate buffer (NaPi) solutions with various pH. d Linear sweep voltammetry (LSV) profiles showing the oxidation of formaldehyde over CuNW/CF in alkaline and neutral solutions. e FEs of H2 and formic acid formation over CuNW/CF determined at 0.1–0.4 VRHE in 0.1 M NaPi at pH 11 containing 50 mM formaldehyde. f Superposition of the LSV curves and g time-dependent H2 and H2O2 productions at the anode obtained for the combined CuNW/CF (formaldehyde oxidation, FLD is formaldehyde)–GOMC with GDE (H2O2 production) system at 0 V vs. the counter electrode in 0.1 M NaPi, containing 50 mM formaldehyde at the anode. Inset: magnification of productions for 3–5 h in 0.1 M NaPi at pH 6. The error bars indicate the standard deviation based on three independent measurements. Source data are provided as a Source data file.

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