journal article·2024-08-05

Bioinspired “Spindle Knot Effect” Integrated into Mixed-Matrix Nanofibrous Membranes for Highly Efficient Solar-to-Vapor Conversion

Hao Ren, Yuhao Xiao, Chang Yang, Qingquan Tang, Zhiyue Dong, Xin Cui, Hua Wang, Luoxin Wang, Jiang Gong

ACS Materials Letters· Volume 6· Issue 8
Publisher page

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.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Solar-Powered Water Purification Methods · Membrane Separation Technologies · Surface Modification and Superhydrophobicity

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Hubei Key Laboratory for New Textile Materials and Applications, Wuhan Textile University, Wuhan 430200, China

Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China

Advanced Interdisciplinary Technology Research Center, National Innovation Institute of Defense Technology, Beijing 100071, China

Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Semiconductor Chemistry Center, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Funding

Natural Science Foundation of Hubei Province · Beijing Municipal Natural Science Foundation · National Natural Science Foundation of China · State Key Laboratory of Biobased Fiber Manufacturing Technology

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