Abstract: Catalytic CoFe₂ O₄ and solar-thermal carbon nanotube decorated bamboo fabrics (CCBF) are fabricated for integrating efficient solar steam generation from wastewater with catalytic degradation of its organic con-taminants. Thanks to the numerous porous channels and polar groups of bamboo fabric and the efficient solar-thermal energy conversion of black carbon nanotubes, the porous and hydrophilic CCBF exhibits fast upward transport of water, efficient solar light absorption, and high solar-thermal energy conversion effi-ciency. The decorated CoFe₂ O₄ not only enhances the solar-thermal energy conversion efficiency of CCBF but also activates potassium peroxymonosulfate to generate abundant highly active species for catalytic degradation of bisphenol A (BPA). Furthermore, folding the CCBF into a peak-like 3D evaporator can en-hance solar energy utilization, and gain environmental energy for promoting solar-thermal water evapo-ration and catalytic degradation performances. The 3D CCBF evaporator achieves a water evaporation rate of 2.72 kg m^-2 h^-1 under 1-sun irradiation. Meanwhile, 100% of the BPA in the seawater can be degraded within 10 min. An exceptional high purification efficiency of 27.72 kg m^-2 h^-1 is achieved with the 3D evaporator during a long-term treatment of BPA-containing seawater under 1-sun irradiation. This work demonstrates efficient purification of seawater/wastewater with both metal ions and organic pollutants by simultaneous solar-thermal evaporation of water and catalytic degradation of organic pollutants.

Key words: Solar-thermal water evaporation, Seawater desalination, Catalytic degradation, Carbon nanotubes, CoFe₂O₄