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作 者:Dongmin Yue Bingbing Li De Sun Hao Zhang Meiling Liu Jingtong Yu
机构地区:[1]School of Chemical Engineering,Changchun University of Technology,Changchun 130012,China [2]Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province,Changchun 130012,China
出 处:《Nano Research》2023年第7期10358-10368,共11页纳米研究(英文版)
基 金:The authors gratefully acknowledge the National Key R&D Program of China(Nos.2022YFB3903200 and 2022YFB3903203);the Natural Science Foundation of Jilin Province(No.20210101392JC).
摘 要:The structures of the solar-thermal membranes always influence the performance of light absorption and salt resistance in desalination.Inspired by the hierarchical structure of the coniferous leaves with excellent sunlight absorption in frigid regions,a coniferous leaf-like nickel black(L-Ni)membrane for desalination by solar-thermal energy conversion was prepared through electroplating method under a constant voltage.The light trapping effect of coniferous leaf-like structure led to the light absorption enhanced to 92%,the evaporation rate improved to 1.38 kg·m^(-2)·h^(-1),and the solar-vapor conversion efficiency of L-Ni membrane reaching up to 89.75%under 1 sun irradiation.The stability of the membrane was still excellent after 20 cycles desalination because the coniferous leaf-like structure could enhance the hydrophobicity(water contact angle:152°)of the L-Ni membrane,and it was beneficial to salt resistance.The promising performance of L-Ni membrane with coniferous leaf-like structure provides a possibility to replace the noble metal solar-thermal conversion materials.
关 键 词:coniferous leaf-like structure nickel black membrane electrochemical method solar evaporation
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