Design of a novel fuel cell-Fenton system: a smart approach to zero energy depollution
| Autor: | Marc Cretin, Roseline Esmilaire, Mikhael Bechelany, Cyril Vallicari, Duy Linh Nguyen, Sophie Tingry, Anne Julbe, Thi Xuan Huong Le, Martin Drobek |
|---|---|
| Přispěvatelé: | Institut Européen des membranes (IEM), Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Van Lang University |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Controlled atmosphere
Materials science Oxide 02 engineering and technology 010402 general chemistry 7. Clean energy 01 natural sciences law.invention Atomic layer deposition chemistry.chemical_compound law Specific surface area Organic chemistry [CHIM]Chemical Sciences General Materials Science Calcination Dopant Renewable Energy Sustainability and the Environment General Chemistry 021001 nanoscience & nanotechnology Cathode 0104 chemical sciences Anode Chemical engineering chemistry 13. Climate action 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A Journal of Materials Chemistry A, Royal Society of Chemistry, 2016, ⟨10.1039/C6TA05443A⟩ |
| ISSN: | 2050-7488 |
| DOI: | 10.1039/C6TA05443A⟩ |
| Popis: | International audience; A model azo dye pollutant, Acid Orange 7 (AO7), was removed efficiently from an aqueous medium by a smart eco-friendly Fuel Cell-Fenton (FC-Fenton) system without any external power supply. In this approach, AO7 was degraded by an electro-Fenton process at a designed cathode (Carbon Felt (CF)/porous Carbon (pC)) supplied by direct clean electrical energy from abiotic glucose oxidation at a CF/gold anode (CF@Au). The highly active cathode was fabricated by an attractive route combining Atomic Layer Deposition (ALD) of ZnO on commercial carbon felts (CFs) followed by subsequent solvothermal conversion of the metal oxide to a metal organic framework (here ZIF-8). The as-prepared composite material was further calcined at high temperature under a controlled atmosphere. A pC-based support with high specific surface area and nitrogen as a dopant was thus obtained, enhancing both conductivity and electrocatalytic properties toward H2O2 production from oxygen reduction. Degradation kinetics of AO7 (0.1 mM initial concentration) at the CF@pC cathode was monitored by UV-vis spectrophotometry and High-Performance Liquid Chromatography (HPLC) to prove the efficiency of the composite material for the degradation of such a bio-refractory model molecule. Benefitting from the H2O2 production rate (9.2 mg L−1 h−1) by the pC layer, AO7 (35.0 mg L−1) was degraded by the electro-Fenton process in acidic medium (pH = 3) with removal efficiency reaching 90% in 10 h. The durability of the system was extended for more than 2 months with an average power output of 170 mW m−2, confirming this abiotic FC-Fenton system as a promising, green, future technology for both environmental and energy-related areas, including membrane-coupled reactor systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|