Fig. 4: Recyclability and temporal stability of the iron doped graphenic carbon (Fe/g-C) with >90% PFOA removal and fluoride (F-) adsorption.
From: Hybrid graphenic and iron oxide photocatalysts for the decomposition of synthetic chemicals

A PFOA removal in 5 consecutive cycles using 32 wt% Fe/g-C hybrids. Experimental conditions: [PFOA]0 in each cycle = 1 mg L−1, photocatalyst dosage = 1 g L−1, temperature = 22 ± 2 °C, and UV fluence rate = 1.42 ± 0.05 mW cm−2. B SEM images of photocatalyst after the 5th. C XPS O 1 s and F 1 s before and after PFOA decomposition.