Figure S7. Decrease of 4-chlorophenol concentration as a function of irradiation time in the presence of different photocatalysts (a); first order kinetic plots of 4-chlorophenol degradation and estimated rate constants (b); irradiation time-dependent 1H NMR spectra of 4 chlorophenol solutions in D2O in the presence of sodium poly(heptazine imide) as a photocatalyst (c). Asterisks denote proton signals of 4-chlorophenol.

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