Efficient fabrication of fabric-based Janus interfacial evaporator via melt centrifugal spinning for simultaneous solar evaporation, pollutant degradation, antibacterial action, and thermoelectric output

Fiber fabrics have been wildly utilized for solar interfacial evaporators to address freshwater scarcity. However, the complex and expensive manufacturing processes remain limited to their scalable development. Herein, a fabric-based Janus interfacial evaporator is efficiently fabricated on a large scale by integrating an extremely innovative self-designed melt-centrifugal spinning technology with spray coating technology. The prepared fabric-based Janus interfacial evaporator has differential hydrophilicity, uneven surfaces, and channels that allow moisture escape. Benefiting from the excellent photothermal conversion of graphene oxide and the charge transfer actions of titanium dioxide, such a multifunction evaporator can reach a high evaporation rate of 1.72 kg m-2 h-1 under 1 sun irradiation, a superior antibacterial rate of 99%, excellent photocatalytic degradation, and effective thermoelectric ability simultaneously. Moreover, it also shows fantastic performance in salt resistance, recyclable evaporation, and real desalination. This work demonstrates a high-efficiency, cost-effective, multifunctional, and scalable strategy for high-performance fiber fabrics solar interfacial evaporation. (c) 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.