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首页> 外文期刊>Advanced Functional Materials >A MXene-Based Hierarchical Design Enabling Highly Efficient and Stable Solar-Water Desalination with Good Salt Resistance
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A MXene-Based Hierarchical Design Enabling Highly Efficient and Stable Solar-Water Desalination with Good Salt Resistance

机译：基于MXENE的分层设计，实现了具有良好耐盐性的高效和稳定的太阳能脱盐

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摘要

A solar-thermal water evaporation structure that can continuously generate clean water with high efficiency and good salt rejection ability under sunlight is highly desirable for water desalination, but its realization remains challenging. Here, a hierarchical solar-absorbing architecture is designed and fabricated, which comprises a 3D MXene microporous skeleton with vertically aligned MXene nanosheets, decorated with vertical arrays of metal-organic framework-derived 2D carbon nanoplates embedded with cobalt nanoparticles. The rational integration of three categories of photothermal materials enables broadband light absorption, efficient light to heat conversion, low heat loss, rapid water transportation behavior, and much-improved corrosion and oxidation resistance. Moreover, when assembling with a hydrophobic insulating layer with hydrophilic channel, the MXene-based solar absorber can exhibit effective inhibition of salt crystallization due to the ability to advect and diffuse concentrated salt back into the water. As a result, when irradiating under one sun, the solar-vapor conversion efficiency of the MXene-based hierarchical design can achieve up to approximate to 93.4%, and can remain over 91% over 100 h to generate clean vapor for stable and continuous water desalination. This strategy opens an avenue for the development of MXene-based solar absorbers for sustainable solar-driven desalination.
机译：太阳能 - 热水蒸发结构，可以在阳光下连续产生高效率和良好的盐排出能力的清洁水，对于水海水淡化来说是非常理想的，但其实现仍然具有挑战性。这里，设计和制造了分层太阳能吸收架构，其包括具有垂直对齐的MxEne纳米晶片的3D mxEne微孔骨架，用嵌入钴纳米粒子的垂直阵列装饰着垂直对齐的MXENE纳米晶片。三类光热材料的合理整合使宽带光吸收，高效光，热转化，低热损失，水运输行为，耐腐蚀性和抗氧化耐腐蚀性。此外，当用具有亲水通道的疏水性绝缘层组装时，由于前进和将浓缩的盐返回到水中的能力，MXENE的太阳能吸收剂可以表现出有效的盐结晶抑制。结果，当在一个阳光下照射时，基于MXENE的等级设计的太阳能转换效率可以实现高达93.4％，并且可以保持超过100小时以上以产生稳定和连续水的清洁蒸气海水淡化。该策略为可持续的太阳能驱动的海水淡化开辟了基于MXENE的太阳能吸收剂的发展途径。

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  • 来源
    《Advanced Functional Materials》 |2020年第52期|2007110.1-2007110.11|共11页
  • 作者

    Fan Xiangqian; Yang Yang; Shi Xinlei; Liu Yang; Li Hongpeng; Liang Jiajie; Chen Yongsheng;

  • 作者单位

    Nankai Univ Natl Inst Adv Mat Sch Mat Sci & Engn Tianjin 300350 Peoples R China;

    Nankai Univ Coll Chem Minist Educ Key Lab Funct Polymer Mat Tianjin 300350 Peoples R China|Minist Nat Resources Tianjin Inst Seawater Desalinat & Multipurpose Utilizat Tianjin 300192 Peoples R China;

    Nankai Univ Natl Inst Adv Mat Sch Mat Sci & Engn Tianjin 300350 Peoples R China;

    Nankai Univ Natl Inst Adv Mat Sch Mat Sci & Engn Tianjin 300350 Peoples R China;

    Nankai Univ Natl Inst Adv Mat Sch Mat Sci & Engn Tianjin 300350 Peoples R China;

    Nankai Univ Natl Inst Adv Mat Sch Mat Sci & Engn Tianjin 300350 Peoples R China|Nankai Univ Coll Chem Minist Educ Key Lab Funct Polymer Mat Tianjin 300350 Peoples R China|Nankai Univ Tianjin Key Lab Met & Mol Based Mat Chem Tianjin 300350 Peoples R China|Nankai Univ Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300350 Peoples R China;

    Nankai Univ Coll Chem Minist Educ Key Lab Funct Polymer Mat Tianjin 300350 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    hierarchical architectures; MXenes; solar absorbers; solar-vapor generation; water desalination;

    机译：分层体系结构;mxenes;太阳能吸收剂;太阳能蒸气生成;水海水淡化;

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