Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (3): 548-555.doi: 10.1007/s40242-024-4091-8

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Enhanced Solar Water Desalination by CuCo2S4-decorated Carbon Foam Derived from Waste Plastics

Muzammil HUSSAIN1,2, Tofik Ahmed SHIFA1, Pratik V. SHINDE1, Pankaj KUMAR4, Stefano CENTENARO1,5, Silvia GROSS3, Elisa MORETTI1, Alberto VOMIERO1,4   

  1. 1. Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy;
    2. Department of Industrial Engineering, University of Padova, Via Venezia 1, 35131 Padova, Italy;
    3. Department of Chemical Sciences, University of Padova, Via Francesco Marzolo 1, 35131 Padova, Italy;
    4. Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden;
    5. Center for Cultural Heritage Technologies (CCHT), Istituto Italiano di Tecnologia (IIT), Via Torino 155, 30170 Venezia-Mestre, Italy
  • Received:2024-04-12 Online:2024-06-01 Published:2024-06-01
  • Contact: Alberto VOMIERO,E-mail:alberto.vomiero@ltu.se;Tofik Ahmed SHIFA,E-mail:tofikahmed.shifa@unive.it E-mail:alberto.vomiero@ltu.se;tofikahmed.shifa@unive.it
  • Supported by:
    This work was supported by the Marie Skłodowska-Curie Individual Fellowship (No. GA 101027930), and the Italian Ministry of University (MUR) for funding through Progetti di Ricerca Scientifica di Rilevante Interesse Nazionale (No. 2022FNL89Y), the Kempe Foundation, the Knut & Alice Wallenberg Foundation, and the Project of Ca’ Foscari University of Venice (SPIN Project), the National Recovery and Resilience Plan (NRRP), Mission 4 Component 2 Investment 1.3, Project NEST. The authors acknowledge technical support from Mr. Tiziano FINOTTO for the collection of XRD data.

Abstract: Interfacial solar desalination is an emerging technology for freshwater production, but the finding of novel solar evaporators is still challenging. In the present research, graphitic carbon foam (CF) was synthesized from the upcycling of waste plastic polyethylene terephthalate (PET) waste bottles functionalized with carrollite CuCo2S4 as a photothermal layer. Analytical characterization [X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS)] confirms the functionalization of carrollite CuCo2S4 on graphitic carbon foam. The UV-Vis spectroscopy analysis showed an enhanced optical absorption in the UV-Vis-near IR region (>96%) for functionalized CuCo2S4-CF foam compared to carbon foam (67%). The interfacial solar desalination experiment presented a significantly enhanced evaporation rate of 2.4 kg·m-2·h-1 for CuCo2S4-CF compared to that of CF (1.60 kg·m-2·h-1) and that of CuCo2S4 (1.60 kg·m-2·h-1). The obtained results proved that the newly synthesized CuCo2S4-CF from the upcycled plastic into new material for the photothermal desalination process can enhance the practice of a circular economy to produce fresh water.

Key words: Photothermal desalination, Cobalt, Copper, Chalcogenide, Waste upcycling, Circular economy