High-entropy-alloy nanoparticles with 21 ultra-mixed elements for efficient photothermal conversion
High-entropy-alloy nanoparticles with 21 ultra-mixed elements for efficient photothermal conversion作者机构：Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and EngineeringNortheastern University Institute of Advanced Magnetic MaterialsCollege of Materials and Environmental EngineeringHangzhou Dianzi University
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2022年第9卷第6期
页 面：124-134页
核心收录：
学科分类：07[理学] 08[工学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学]
基 金：supported by the National Key Research and Development Program of China (2019YFE0121700) the National Natural Science Foundation of China (U1908220) the Key Research and Development Program of Zhejiang Province(2021C01033) the Natural Science Foundation of Liaoning Province (2021-MS-092) the Fundamental Research Funds for the Central Universities (N2102010)
主 题：high-entropy alloy nanoparticle ultra-mixing arc-discharged method photothermal conversion
摘 要：Multi-metallic nanoparticles have been proven to be an efficient photothermal conversion material, for which the optical absorption can be broadened through the interband transitions(IBTs), but it remains a challenge due to the strong immiscibility among the repelling combinations. Here, assisted by an extremely high evaporation temperature, ultra-fast cooling and vapor-pressure strategy, the arc-discharged plasma method was employed to synthesize ultra-mixed multi-metallic nanoparticles composed of 21 elements(FeCoNiCrYTiVCuAlNbMoTaWZnCdPbBiAgInMnSn), in which the strongly repelling combinations were uniformly distributed. Due to the reinforced lattice distortion effect and excellent IBTs, the nanoparticles can realize an average absorption of 92% in the entire solar spectrum(250 to 2500 nm). In particular, the 21-element nanoparticles achieve a considerably high solar steam efficiency of nearly 99%under one solar irradiation, with a water evaporation rate of 2.42 kg m-2h-1, demonstrating a highly efficient photothermal conversion performance. The present approach creates a new strategy for uniformly mixing multi-metallic elements for exploring their unknown properties and various applications.
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