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. 2020 Jun 25;7(16):2001543. doi: 10.1002/advs.202001543

Figure 4.

Figure 4

a) SPS responses in N2 atmosphere, TPV responses in air under the irradiation of 355 nm light (inset), and b) MPAS of CN, 0.5CoPc/CN, and 0.5CoPc/9P‐CN, respectively. c) EPR spectra of 0.5CoPc/9P‐CN under the irradiation of 405 nm light. d) Contour surfaces of frontier molecular orbitals HOMO‐1, HOMO‐2, and LUMO for the excited state with the maximum oscillator strength. e) Free energy of *O2 − formation on single‐atom Co2+ of CoPc and comparison of Co—O bond length for *O2 and *O2 − adsorption on CoPc, respectively. f) Schematic of the main charge transfer mode and subsequent photoreduction process of O2 on the CoPc/P‐CN heterojunction under visible‐light irradiation.