| Title | Transforming Cigarette Wastes into Oxygen Reduction Reaction Electrocatalyst: Does Each Component Behave Differently? An Experimental Evaluation |
|---|---|
| ID_Doc | 12665 |
| Authors | Zuccante, G; Muhyuddin, M; Ficca, VCA; Placidi, E; Acciarri, M; Lamanna, N; Franzetti, A; Zoia, L; Bellini, M; Berretti, E; Lavacchi, A; Santoro, C |
| Title | Transforming Cigarette Wastes into Oxygen Reduction Reaction Electrocatalyst: Does Each Component Behave Differently? An Experimental Evaluation |
| Year | 2024 |
| Published | Chemelectrochem, 11.0, 11 |
| Abstract | Trillion of cigarette butts are annually littered without being recycled. This work aims at valorizing the whole cigarette butts and their components (paper, filter and tobacco) into Fe-Nx-C electrocatalysts for oxygen reduction reaction (ORR) in acid and alkaline media. The pristine wastes were pyrolyzed at 450 degrees C, activated with KOH at 700 degrees C, blended with iron phthalocyanine (FePc) precursor, and heat-treated at 600 degrees C to produce a robust Fe-Nx-C material with ORR active units. The effect of the cigarette components on the final electrocatalytic activity was evaluated by thoroughly investigating the surface chemistry with XPS. The electrocatalysts displayed similar results among the different components in both media due to comparable surface chemistry, especially concerning the nitrogen functional groups. The highest performance was obtained in alkaline where the electrocatalysts from whole cigarettes and paper (CIGF_450 and CIGPF_450) showed an E1/2 of 0.89 V vs RHE, slightly larger than that of Pt/C with 40 wt % of Pt, which encouraged to replace Pt-based electrocatalysts in alkaline fuel cells. Within the core of circular economy, cigarette butts and their components (paper, filter and tobacco) were converted into Fe-Nx-C electrocatalysts for oxygen reduction reaction, via pyrolysis, KOH activation and blending with FePc precursor. The final electrocatalysts were tested in acid and alkaline media with RRDE after characterizing them from the morphological and chemical point of view. image |
| https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/celc.202300725 |
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