Fig. 4: Recyclability, stability, and applicability evaluation. | Nature Communications

Fig. 4: Recyclability, stability, and applicability evaluation.

From: Tandem microplastic degradation and hydrogen production by hierarchical carbon nitride-supported single-atom iron catalysts

Fig. 4

a Stability tests of FeSA-hCN: The first 4 runs were performed under 140 °C for 12 h and the last 2 runs were performed under 160 °C for 12 h. b Fe concentrations in solution. c FT spectra from Fe K-edge EXAFS in R space of used FeSA-hCN. d HAADF-STEM image and energy-dispersive X-ray spectroscopy (EDX) elemental mapping images of used FeSA-hCN, Scale bars, 200 nm. e Performance evaluation in different water matrices. f Performance evaluation using different plastics: PET, HDPE, PVC, LDPE, PP, and PS. g Performance evaluation using different types of real-life plastics. Reaction conditions: [MPs] = 1 g L–1, [catalyst] = 1 g L–1, [H2O2] = 100 mmol L–1, hydrothermal temperature = 140/160 °C, and neutral pH if not otherwise specified. The error bars represent the standard deviations, obtained by repeating the experiment twice.

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