From plastic-waste to H2: A first approach to the electrochemical reforming of dissolved Poly(methyl methacrylate) particles |
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| Affiliation: | 1. Université de Lyon, Institut de Recherches sur La Catalyse et L’Environnement de Lyon, UMR 5256, CNRS, Université Claude Bernard Lyon 1, 2 avenue A. Einstein, 69626, Villeurbanne, France;2. Dipartimento di Chimica, Universitá di Torino, Via Pietro Giuria 5, 10125, Turin, Italy;3. Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, FI-00014, Finland;1. Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 83040, Fisciano, SA, Italy;2. Eldor Corporation S.p.A, Via don Paolo Berra, 18, 22030, Orsenigo, CO, Italy;1. Institute of Advanced Study, Chengdu University, 610106 Chengdu, PR China;2. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054 Chengdu, PR China;3. Catalonia Institute for Energy Research - IREC, Sant Adrià de Besòs, 08930 Barcelona, Catalonia, Spain;4. Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain;5. School of Biological and Chemical Engineering, Nanyang Institute of Science and Technology, Nanyang 473004, PR China;6. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain |
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| Abstract: | The development of sustainable processes for the recycling of plastic is a major environmental issue to reduce the pollution by this kind of waste. The electro-oxidation of plastic wastes in electrolysers powered by renewable energies is a promising option to produce hydrogen at low temperature while diminishing the energy demand compared to Oxygen Evolution Reaction (OER). Poly (methyl-methacrylate) (PMMA) particles, a widely used polymer, were dissolved (0.1–2% wt.) in an isopropanol(IPA)/H2O binary solvent and electro-oxidized on Pt/C-based electrodes in a liquid batch electrochemical cell at 70 °C in acidic media. Despite the dissolution strategy, polymer macromolecules partially block the accessibility of the active sites of a commercial electrode and strongly degrades its electrochemical performances mainly linked to IPA electro-oxidation. The preparation of a more porous electrode supported on carbon paper was found to strongly hinder this deactivation. Furthermore, the electrooxidation of PMMA or PMMA-derived molecules can be performed during cyclic voltammetries up to 1.4 V and chrono-amperometries at 1.4 V. |
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| Keywords: | Hydrogen production electrochemical cell plastic-waste valorization poly(methyl methacrylate) (PMMA) valorization electrooxidation of plastics |
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