(a)Atomic model of an incompletely condensed g-C3N4 sheet,(b) UV-vis light absorption spectra of g-C3N4 and Nv-richg-C3N4 . (c,d) Atomic model of the 2D sheets of c) melonand d) H2-reduced melon with one NH2 group replaced by aH atom, (e) UV-bis absorption spectra of g-C3N4 and Nv-C3N4
(a) Synthetic process for the (Cring)-C3N4. (b) Schematic for photocarrier transfer in (Cring)-C3N4, where Lpc and τn index the diffusion length and lifetime of the photocarriers, respectively.
(c) Electrochemical impedance spectra (EIS) and insets show the equivalent circuitimpedance model and the calculated photocarrier diffusion length. (d) H2evolution rate of C3N4 and (Cring )-C3N4under UV ( λ< 420 nm) andvisible light ( λ> 420 nm)
(a) Schematicdiagram of Z-scheme mechanism for (a) g-C3N4 /α-Fe2O3, (b) g-C3N4 /SnS2 , (c) g-C3N4/WO3, and (d) g-C3N4 /Ag/Ag3PO4
(a) 5 h production amount of CH4, CO and CH3CHO from the conversion of CO2 over g-C3N4and KOH decorated g-C3N4 , (b) schematic mechanism ofenhanced CO2 reduction rate of KOH decorate g-C3N4 photocatalyst.
参考文献：M. Xiao et al., Solar energy conversion on g-C3N4 photocatalyst: Light harvesting, charge separation, and surface kinetics, Journal of Energy Chemistry ,2018, https://doi.org/10.1016/j.jechem.2018.02.018 （点击阅读原文）