Solar distillation is a sustainable and promising technique to generate fresh water.However,the solar vapor generation is a high energy consumption process,resulting in a low water yield under natural sunlight.Hence,developing of advanced evaporators that can simultaneously reduce the energy requirement of water vaporization and accelerate solar water evaporation remains a great challenge.In this study,we report the fabrication of a multifunctional hydrogel of HxMoO3/PNIPAM with PNIPAM as hydratable skeleton and HxMoO3 as the light-absorbing unit for solar water evaporation.The experimental results demonstrate that the as-prepared hydrogel owns excellent photothermal activity.Accurately,the fabricated hydrogel-based solar evaporators achieved high water evaporation rate of 1.65 kg m-2 h-1 with the energy conversion efficiency of 85.87％under 1 kW m-2 irradiation.The enhanced photothermal activity of HxMoO3/PNIPAM hydrogel can be attributed to the synergistic effects of the components composed in this hierarchical architecture that change the water state and further speed up water evaporation.The HxMoO3/PNIPAM evaporators indicate its great potential for practical implementation of solar water evaporation.

Shuai Cao;Jingyun Jiang;Qingyong Tian;Cang Guo;Xuzhe Wang;Kun Dai;Qun Xu

College of Materials Science and Engineering,Zhengzhou University,Zhengzhou,450052,China;Institute of Advanced Technology Zhengzhou University,Zhengzhou,450052,China;Key Laboratory of Materials Processing and Mold,Minisitry of Education,Zhengzhou University,Zhengzhou,450002,China

绿色能源与环境（英文）

[1]Shuai Cao;Jingyun Jiang;Qingyong Tian;Cang Guo;Xuzhe Wang;Kun Dai;Qun Xu-.Building of multifunctional and hierarchical HxMoO3/PNIPAM hydrogel for high-efficiency solar vapor generation)[J].绿色能源与环境（英文）,2022(05):1006-1013

HxMoO3,hydratable

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