Continuous and efficient purification of seawater using suspended photothermal nanocomposite fabrics with self-floatation

Solar energy is a sustainable clean energy. Evaporating seawater through solar thermal conversion an ideal solution to the global shortage of fresh water resources. At present, evaporating generally suffers from serious heat loss, salt accumulation and high cost. Here, non-woven technology spraying process, flexible fabric with rough, porous, fluffy surface prepared. Polyethylene terephthalate/polypropylene (PET/PP) composite nonwoven used as substrate, polydopamine (PDA) adhesive hydrophilic agent wrap fibre. Carbon nanotubes (WCNTS) are light-absorbing materials bond fibre form efficient evaporator. The rough makes incident light diffusely reflected in absorption layer multiple times, thereby increasing rate (≈94%), while porous micron-scale network structure shows strong capillary effect. Based on these advantages, air suspension evaporation method for evaporation. Under one irradiation (1kw m−2), reaches 1.42 kgm−2 h−1, efficiency close 92%. In addition, [email protected]/PP nonwovens can still maintain after long-term cycling, indicating that it has durability good reusability. desalinated using meets drinking standards (defined by WHO) excellent desalination ability. Most importantly, this material easy produce, be produced large scale industry, expected solve