Fig. 6: Performance of the catalysts in producing H2O2 within flow cells and application in dye degradation.
From: Host-guest-induced electronic state triggers two-electron oxygen reduction electrocatalysis
a Schematic diagram showing the configuration with samples and carbon as cathodic and anodic catalysts, b KH2O2 and FEH2O2 of HG-CD-Ph of the flow cell operated under different current densities. c H2O2 production rate (KH2O2) and corresponding faradaic efficiency (FEH2O2). d H2O2 yield of HG-CD-Ph, HG-CD-TPB, P-CN-Ph, and P-CN-TPB tested under 80 mA cm–2 (test conditions: resistance in flow cell test system = 8.6 ± 0.1 Ω). e Digital images for the decolorization of organic dyes (Malachite green). f Digital images for the decolorization of organic dyes (Rhodamine B). g The illustration of the relationship between activity and structure. (each experiment was independently tested three times; sample size n = 3; mean ± standard deviation (mean ± SD) was analyzed using Origin software; SD reflects the degree of dispersion among individual samples; a small SD means that the value of the test is close to the average; the P-value indicates significant differences: HG-CD-Ph to HG-CD-TPB: P < 0.0001; HG-CD-TPB to P-CN-Ph: P < 0.0001; P-CN-Ph to P-CN-TPB: P < 0.0001; the statistical test was two-sided testing, the α-value was 0.05 and related P-values were analyzed by a two-side t-test of Student in GraphPad Prism software; P-values less than 0.0001 indicate that the differences between HG-CD-Ph to HG-CD-TPB, HG-CD-TPB to P-CN-Ph and P-CN-Ph to P-CN-TPB is particularly significant).
