3D printed electrospun nanofiber-based pyramid-shaped solar vapor generator with hierarchical porous structure for efficient desalination

被引:42
作者
Liu, Ye [1 ]
Luo, Bin [1 ]
Liu, Huijie [1 ]
He, Mantang [1 ]
Wang, Rongwu [1 ]
Wang, Liming [1 ]
Quan, Zhenzhen [1 ]
Yu, Jianyong [2 ]
Qin, Xiaohong [1 ]
机构
[1] Donghua Univ, Coll Text, Key Lab Text Sci & Technol, Minist Educ, Shanghai 201620, Peoples R China
[2] Donghua Univ, Innovat Ctr Text Sci & Technol, Shanghai 201620, Peoples R China
基金
中国国家自然科学基金;
关键词
Solar vapor generation; Electrospun nanofiber; 3D printing; Convective flow; Desalination; WATER EVAPORATION; ENERGY;
D O I
10.1016/j.cej.2022.139402
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Solar vapor generation is regarded as a promising approach to alleviate the water shortage crisis via desalination, while the efficiency is limited by the insufficient vapor escape and adverse effect of salt deposition. Herein, a pyramid structural solar vapor generator is developed combing electrospun polyacrylonitrile/carbon nanotubes (PAN/CNTs) nanofibers and 3D printing technology. Benefiting from the excellent light absorption (98.3%) and photothermal property as well as the good water transportation ability, the optimum sample with concave -convex macroscopic morphology and hierarchical porous microstructure exhibits the evaporation rate up to 2.62 kg m -2h- 1 under one sun illumination. Moreover, with the merit of crisscross stacking characteristic of the sample, the evaporation rate can improve further to 8.31 kg m -2h- 1 under the convective flow of 4 m s-1. More importantly, the evaporator can still achieve a high-level evaporation rate and has good self-cleaning property in high-concentration brine. The unique preparation strategy enables the resultant 3D printed electrospun nanofiber-based pyramid-shaped evaporator to act as a reliable and efficient platform for efficient desalination.
引用
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页数:9
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