Bioinspired “spindle knot effect” integrated into mixed matrix nanofibrous membranes for highly efficient solar-to-vapor conversion
- Indexed by:Journal paper
- First Author:Hao Ren
- Correspondence Author:Jiang Gong
- Co-author:Yuhao Xiao,Chang Yang,Qingquan Tang,Zhiyue Dong,Hua Wang,Luoxin Wang,Xin Cui
- Journal:ACS Materials Letters
- Included Journals:SCI
- Discipline:Science
- First-Level Discipline:Chemistry
- Document Type:J
- Volume:6
- Issue:8
- Page Number:3725
- DOI number:10.1021/acsmaterialslett.4c00973
- Date of Publication:2024-06-15
- Impact Factor:9.6
- Abstract:The microstructure of photothermal interface materials for solar steam generation is crucial to simultaneously optimize the water transfer path and solar-to-vapor conversion efficiency; however, it remains a formidable challenge. Herein, bioinspired by the spindle knot structure of spider silk, spindle-knotted nanofibrous mixed-matrix membranes are facilely prepared and exhibit highly efficient solar-to-vapor conversion due to the “spindle knot effect” that results from the localized solar-to-thermal conversion at the spindle knots and water’s directional movement on the spindle knots’ surface. The as-prepared membrane achieves an evaporation rate of 2.41 kg m–2 h–1 with a conversion efficiency of 95.9% under 1 Sun and a maximum water production of 4.81 kg m–2 in 1 day. Besides, it can output a high electric power of 0.89 W m–2 to power small devices due to the Seebeck effect and exhibit strong ice removal performance. This work reports the bioinspired strategy for constructing multifunctional photothermal interface materials.
- Links to published journals:https://doi.org/10.1021/acsmaterialslett.4c00973
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