| Autor: |
Davide Testa, Giovanni Zuccante, Mohsin Muhyuddin, Roberto Landone, Axel Scommegna, Roberto Lorenzi, Maurizio Acciarri, Elisabetta Petri, Francesca Soavi, Lorenzo Poggini, Laura Capozzoli, Alessandro Lavacchi, Niccolò Lamanna, Andrea Franzetti, Luca Zoia, Carlo Santoro |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Catalysts, Vol 13, Iss 3, p 635 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2073-4344 |
| DOI: |
10.3390/catal13030635 |
| Popis: |
Following the core theme of a circular economy, a novel strategy to upcycle cigarette butt waste into platinum group metal (PGM)-free metal nitrogen carbon (M-N-C) electrocatalysts for oxygen reduction reaction (ORR) is presented. The experimental route was composed of (i) the transformation of the powdered cigarette butts into carbonaceous char via pyrolysis at 450 °C, 600 °C, 750 °C and 900 °C, (ii) the porosity activation with KOH and (iii) the functionalization of the activated chars with iron (II) phthalocyanine (FePc). The electrochemical outcomes obtained by the rotating disk electrode (RRDE) technique revealed that the sample pyrolyzed at 450 °C (i.e., cig_450) outperformed the other counterparts with its highest onset (Eon) and half-wave potentials (E1/2) and demonstrated nearly tetra-electronic ORR in acidic, neutral and alkaline electrolytes, all resulting from the optimal surface chemistry and textural properties. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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