N-doped carbon-coated Fe3N composite as heterogeneous electro-Fenton catalyst for efficient degradation of organics

Herein, the application of a N-doped graphitic-carbon-coated iron nitride composite dispersed in carbon framework (Fe3N@NG/NC) is investigated as heterogeneous electro-Fenton (HE-EF) catalyst for efficient removal organics. The simultaneous carbonization and ammonia etching iron-based metal organic (Fe-MOF) materials yielded well-dispersed carbon-coated Fe3N nanoparticles with diameter ~70 nm. pyridinic N endowed high HE-EF activity decomposing electrogenerated H2O2 to •OH. Fe3N@NG/NC exhibited outstanding performance removing various pollutants low leaching. A rate 97–100% could be obtained rhodamine B (RhB), dimethyl phthalate, methylene blue, orange II 120 min at pH 5.0. When solution was set 3.0, 5.0, 7.0, 9.0, RhB reached 100%, 96%, 92%, 81%, respectively, 60 an optimum voltage 0.0 V (vs. reversible hydrogen electrode (RHE)). Moreover, concentration leached expected below 0.03 mg/L wide range 3.0–9.0. In addition, efficiency remained 90% after six cycles reusability experiments. This work highlights MOF-derived corresponding catalytic mechanism, which facilitates its wastewater treatment.