Abstract
Catalytic CoFe2O4 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 CoFe2O4 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.
基金项目
National Natural Science foundation of China(U1905217)
National Natural Science foundation of China(52090034)
National Natural Science foundation of China(U22A20248)
National Natural Science foundation of China(52221006)
Fundamental Research Funds for the Central Universities(XK1802)
NETL
NSTL
万方数据