Manoto, Bontle A.Bezza, Fisseha AndualemTichapondwa, Shepherd MasimbaChirwa, Evans M.N.2025-09-042025-09-042025-07Manoto B.A., Bezza F.A., Tichapondwa S.M., Chirwa E.M.N., 2025, Interfacial Solar Steam Generator Based on Reduced Graphene Oxide/polyurethane Monolith for Efficient Seawater Desalination, Chemical Engineering Transactions, 117, 757-762. https://doi.org/10.3303/CET25117127.979-12-81206-17-52283-921610.3303/CET25117127http://hdl.handle.net/2263/104218Seawater desalination using renewable energy sources is a promising solution to combat global water scarcity. In this study, the development and performance of an interfacial solar steam generator (ISSG) based on a reduced graphene oxide/polyurethane (rGO/PU) monolith is reported. Graphene is a hexagonal lattice 2D structure of sp2 hybridized carbon atom. It has excellent properties such as high thermal conductivity and high specific surface area making it a suitable candidate for thermal desalination. Pristine graphite was oxidised following Tour`s method. The rGO/PU monolith was fabricated through a hydrothermal self-assembly process and characterized using Raman spectroscopy, SEM, XRD, FTIR, and BET. Under 1 sun illumination, the ISSG achieved an evaporation rate of 1.34 kg·m?²·h?¹ and a photothermal conversion efficiency of 93%. This porous device effectively addressed the issue of energy localization, heat management, anti-scaling, and salt rejection. Our results demonstrate that the rGO/PU-based ISSG is a promising solution for efficient seawater desalination, and upscaling is recommended for practical applications.en© 2025, AIDIC Servizi S.r.l.Seawater desalinationRenewable energy sourcesWater scarcityInterfacial solar steam generator (ISSG)Reduced graphene oxide/polyurethane (rGO/PU)Article