Recycling waste plastics into La-MOFs for supercapacitor applications: morphology-controlled synthesis and electrochemical performance
Journal of Materials Science, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s10853-026-13181-1
- Dergi Adı: Journal of Materials Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Compendex, INSPEC, MEDLINE, Public Affairs Index, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Erciyes Üniversitesi Adresli: Evet
Özet
The growing global emphasis on sustainable energy solutions has intensified the search for high-performance, environmentally benign electrode materials that can meet the dual demands of energy storage and waste minimization. Among the emerging strategies, the valorization of plastic waste into functional materials for supercapacitor applications presents a compelling circular economic approach. In this work, we report the solvothermal synthesis of lanthanum-based metal–organic frameworks (La-MOFs) utilizing three distinct types of post-consumer plastic wastes polyethylene terephthalate (PET) bottles, low-density polyethylene (LDPE) plastic bags, and polystyrene (PS) petri dishes as unconventional organic linker sources. Without the need for purified chemicals or complex pre-treatment, the plastics were directly converted in situ under solvothermal conditions (180 °C for 24 h in a DMF/H2O medium) into coordination-capable moieties, leading to the successful formation of La-MOF nanostructures labeled as La-PET, La-LDPE, and La-PS. Comprehensive structural and electrochemical characterizations revealed significant differences in morphology, crystallinity, and capacitive behavior across the samples, dictated by the chemical nature of the original plastic waste. Notably, the La-PS material derived from polystyrene petri dishes exhibited the highest specific capacitance of 583.91 F/g at 1 A/g, attributed to its high surface area and possibly enhanced electronic interactions. Meanwhile, La-LDPE, synthesized from plastic bags, demonstrated exceptional rate capability at 20 A/g, suggesting favorable ion transport dynamics and structural stability under high current densities.