Ferroelectric LiTaO3 as novel photo-electrocatalyst in microbial fuel cells
| Autor: | Nour-Eddine Touach, Abdellah Benzaouak, El Mostapha Lotfi, Mohammad El Mahi, M.J. Salar-García, Víctor Manuel Ortiz-Martínez, Francisco J. Hernández-Fernández, Antonia Pérez de los Ríos |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Microbial fuel cell Materials science General Chemical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrocatalyst 01 natural sciences Catalysis law.invention law Environmental Chemistry Waste Management and Disposal General Environmental Science Water Science and Technology Waste management Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Cathode 0104 chemical sciences Electricity generation Chemical engineering chemistry Wastewater Photocatalysis 0210 nano-technology Carbon |
| Zdroj: | Environmental Progress & Sustainable Energy. 36:1568-1574 |
| ISSN: | 1944-7442 |
| Popis: | Microbial fuel cells (MFCs) are a promising technology for simultaneous electricity generation and wastewater treatment. Noble materials can offer high catalyst performance in MFCs but their high cost poses an obstacle for the practical implementation of this technology. Ferroelectric materials such as LiTaO3 are a new generation of photocatalysts that could potentially be used for the oxygen reduction reaction in these devices. Thus, this work investigates the performance of LiTaO3 as cathode catalyst in MFCs for the first time. The power performance of carbon cloth cathodes coated with LiTaO3 was assessed in the presence and absence of light irradiation in MFC systems using wastewater. Prior to be tested in MFCs, the synthesized phase of LiTaO3 was mainly characterized by XRD, particle-size distribution, TEM, and UV–vis spectroscopy analyses. The results show that the performance of the cathode coated with LiTaO3 significantly improves under UV–vis irradiation, with a threefold increase in maximum power density compared with the results obtained in the absence of light source. Under these conditions, COD removal from wastewater reached 66% after 120 h. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1568–1574, 2017 |
| Databáze: | OpenAIRE |
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