Fe-Nanoporous Carbon Derived from MIL-53(Fe): A Heterogeneous Catalyst for Mineralization of Organic Pollutants

Thi Xuan Huong Le (1, 2) , Matthew G. Cowan (1) , Martin Drobek (1) , Mikhael Bechelany (1) , Anne Julbe (1) , Marc Cretin (1)

1 IEM - Institut Européen des membranes
2 Van Lang University

Catalytic electrodes were prepared via carbonization of MIL-53(Fe) on the surface of porous carbon felt electrodes (CF) for use in wastewater treatment by the heterogeneous electro-Fenton (EF) process. The best results were obtained when the carbon felt was pretreated with nitric acid, enhancing the affinity of the MIL-53(Fe) for the surface. Following a series of optimization experiments, carbonization conditions of 800 • C for 5 h were used to form Fe-nanoporous carbon (MOFs@CF). The as-prepared electrodes were used as both cathode and heterogeneous catalyst in the EF process for the mineralization of exemplar dye Acid Orange 7 (AO7). Total organic carbon (TOC) removal of 46.1% was obtained within 8 h of electrolysis at around neutral pH (6.5) and the electrode retained over 80% of its original efficiency over five treatment cycles.

Mots clés: heterogeneous electro-Fenton process; metal-organic framework; dye removal; carbon; electrode

Domaines: Chimie

Thi Xuan Huong Le, Matthew G. Cowan, Martin Drobek, Mikhael Bechelany, Anne Julbe, et al.. Fe-Nanoporous Carbon Derived from MIL-53(Fe): A Heterogeneous Catalyst for Mineralization of Organic Pollutants. Nanomaterials, 2019, 9 (4), pp.641. ⟨10.3390/nano9040641⟩. ⟨hal-02333880⟩