Volume 60, Issue 52 pp. 27113-27118
Research Article

High-Entropy-Alloy Nanoparticles with Enhanced Interband Transitions for Efficient Photothermal Conversion

Dr. Yixing Li

Dr. Yixing Li

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

These authors contributed equally to this work.

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Yijun Liao

Yijun Liao

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

These authors contributed equally to this work.

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Prof. Jian Zhang

Prof. Jian Zhang

Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310012 P. R. China

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Enhui Huang

Enhui Huang

School of Science, China Pharmaceutical University, Nanjing, 211198 P. R. China

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Lianze Ji

Lianze Ji

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310012 P. R. China

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Zhengyu Zhang

Zhengyu Zhang

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

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Rongzhi Zhao

Rongzhi Zhao

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310012 P. R. China

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Zhimin Zhang

Zhimin Zhang

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

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Prof. Bo Yang

Prof. Bo Yang

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

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Prof. Yanhui Zhang

Prof. Yanhui Zhang

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

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Prof. Bo Xu

Corresponding Author

Prof. Bo Xu

School of Science, China Pharmaceutical University, Nanjing, 211198 P. R. China

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Prof. Gaowu Qin

Prof. Gaowu Qin

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

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Prof. Xuefeng Zhang

Corresponding Author

Prof. Xuefeng Zhang

Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering, Northeastern University, Shenyang, 110819 P. R. China

Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310012 P. R. China

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First published: 04 October 2021
Citations: 108

Graphical Abstract

A strategy toward the optimization of photothermal conversion materials with broad optical absorption and high conversion efficiency via the d-d interband transitions is demonstrated. The high-entropy-alloy nanoparticles could realize an excellent solar harvesting performance especially compositing with up to seven 3d elements in a single phase, ascribing to the fully filled energy regions below and above the Fermi level.

Abstract

Photothermal materials with broadband optical absorption and high conversion efficiency are intensively pursued to date. Here, proposing by the d-d interband transitions, we report an unprecedented high-entropy alloy FeCoNiTiVCrCu nanoparticles that the energy regions below and above the Fermi level (±4 eV) have been fully filled by the 3d transition metals, which realizes an average absorbance greater than 96 % in the entire solar spectrum (wavelength of 250 to 2500 nm). Furthermore, we also calculated the photothermal conversion efficiency and the evaporation rate towards the steam generation. Due to its pronounced full light capture and ultrafast local heating, our high-entropy-alloy nanoparticle-based solar steam generator has over 98 % efficiency under one sun irradiation, meanwhile enabling a high evaporation rate of 2.26 kg m−2 h−1.

Conflict of interest

The authors declare no conflict of interest.

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