| Title | Giving New Life to Waste Cigarette Butts: Transformation into Platinum Group Metal-Free Electrocatalysts for Oxygen Reduction Reaction in Acid, Neutral and Alkaline Environment |
|---|---|
| ID_Doc | 22672 |
| Authors | Testa, D; Zuccante, G; Muhyuddin, M; Landone, R; Scommegna, A; Lorenzi, R; Acciarri, M; Petri, E; Soavi, F; Poggini, L; Capozzoli, L; Lavacchi, A; Lamanna, N; Franzetti, A; Zoia, L; Santoro, C |
| Title | Giving New Life to Waste Cigarette Butts: Transformation into Platinum Group Metal-Free Electrocatalysts for Oxygen Reduction Reaction in Acid, Neutral and Alkaline Environment |
| Year | 2023 |
| Published | Catalysts, 13.0, 3 |
| Abstract | 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 degrees C, 600 degrees C, 750 degrees C and 900 degrees 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 degrees C (i.e., cig_450) outperformed the other counterparts with its highest onset (E-on) and half-wave potentials (E-1/2) and demonstrated nearly tetra-electronic ORR in acidic, neutral and alkaline electrolytes, all resulting from the optimal surface chemistry and textural properties. |
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