Pentadecafluorooctanoic acid (PFOA) is environmentally persistent, bioaccumulative, globally distributed and dangerous to human beings. Thus, the degradation of PFOA with effective method remains further exploration. Here, an Electro-Fenton (EF) system was studied for efficient PFOA degradation, and where a new composite material ferrous hierarchically porous carbon (FHPC) prepared by high temperature activation of MIL-100 (Fe) was applied as the cathode, and 81.4% PFOA (Initial 50 mg/L) elimination was achieved at a low potential of ?0.4 V (pH = 7, 3 h). With the increasing of the activated temperature, the catalytic ability of the materials is decreasing because the reduced surface area reduced and the iron nanoparticles size enlarged. Moreover, the H2O2 and the ?OH were also detected to confirm the dominating contribution of Electro-Fenton mechanism in the PFOA degradation. Thus, this material could be used in efficient heterogeneous EF technology for PFOA elimination.
Steenland, K., Fletcher, T. and Savitz, D.A. (2010) Epidemiologic Evidence on the Health Effects of Perfluorooctanoic Acid (PFOA). Environmental Health Perspectives, 1100-1108. https://doi.org/10.1289/ehp.0901827
Li, J., Ai, Z. and Zhang, L. (2009) Design of a Neutral Electro-Fenton System with Fe@ Fe 2 O 3/ACF Composite Cathode for Wastewater Treatment. Journal of Hazardous Materials, 164, 18-25.
Sklari, S.D., Plakas, K.V., Petsi, P.N., et al. (2015) Toward the Development of a Novel Electro-Fenton System for Eliminating Toxic Organic Substances from Water. Part 2. Preparation, Characterization, and Evaluation of Iron-Impregnated Carbon Felts as Cathodic Electrodes. Industrial & Engineering Chemistry Research, 54, 2059-2073. https://doi.org/10.1021/ie5048779
Liu, Z.M., Wu, S.H., Jia, S.Y., et al. (2014) Novel Hematite Nanorods and Magnetite Nano-particles Prepared from Mil-100 (Fe) Template for the Removal of As (V). Materials Letters, 132, 8-10. https://doi.org/10.1016/j.matlet.2014.06.059
Yuan, J. and Shiller, A.M. (1999) Determination of Subnanomolar Levels of Hy-drogen Peroxide in Seawater by Reagent-Injection Chemiluminescence Detection. Analytical Chemistry, 71, 1975-1980. https://doi.org/10.1021/ac981357c