Bioinspired design of integral molded Janus silk fibroin-MXene evaporator for efficient solar vapor generation

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外文摘要：Solar vapor generation is a promising sustainable technology that uses solar distillation to produce fresh water from seawater and wastewater,helping relieve global water resource shortage.Here,inspired by naturally grown integrally molded mulberry leaves with a Janus hydrophilic and hydrophobic structure,a novel,simple,and efficient integrated molding method is proposed to break through the limitations of the traditional split manufacturing strategy and realizes the integrated formation of Janus evaporator.Based on the spontaneous sedimentation characteristics of MXene in silk fibroin solution and its regulation of mesoscopic structure and hydrophilicity of silk fibroin,layered structures with different compositions and hydrophilicities were obtained in one step.Meanwhile,ethanol and glutaraldehyde were added to construct a physical crystallization-chemical crosslinking dual stabilization structure in silk fibroin.Our evaporator has the evaporation rate of 3.07 kg·m2-2·h-1 and the efficiency of 86.8％under 1 sun and maintains high evaporation performance under various extreme test conditions including vigorous washing,repeated compression,and high-intensity ultraviolet(UV)irradiation.Additionally,the evaporator performs well in practical application scenarios,its evaporation rate in the simulated Dead Sea seawater exceeds 2.13 kg·m-2·h-1,and more than 99.9％of the salt,heavy metal ions,oil pollution,and dyes are purified.

外文关键词：

silk fibroinMXenebioinspired integrated moldingJanus structuresolar vapor generation

作者：

Ling-Qing Kong、Zhi-Cheng Zeng、Guang-Zong Min、Zhao-Hui Meng、Guo-Qing Meng、Xiao-Xiao Guo、Nai-Bo Lin、Xiang-Yang Liu

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作者单位：

The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province,Research Center of Biomedical Engineering of Xiamen,Department of Biomaterials,College of Materials,Xiamen University,Xiamen 361005,China

The State Key Laboratory of Marine Environmental Science(MEL),College of Ocean and Earth Sciences,Xiamen University,Xiamen 361005,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Project of Xiamen CityScience and Technology Planning Project of Guangdong ProvinceShenzhen Science and Technology Plan Project

项目编号：

51773171120743223502Z201830122018B030331001JCYJ20180504170208402

出版年：

2024

DOI：

10.1007/s12274-023-6192-y

纳米研究(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.17(4)

参考文献量92