Photothermal conversion property studies of polyoxophosphitemolybdate derivatives through microwave-assisted synthesis

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Rare Metals Pub Date : 2024-07-02 DOI:10.1007/s12598-024-02813-7

Mei-Qian Fu, Yu-Yang Han, Yan-Mei Nie, Yan-Di Liu, Yue Liu, Peng He, Wei-Dong Yu, Xiang Li, Piao He, Juan Li, Jun Yan

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Abstract

Photothermal conversion is one of the key technologies in solar energy collection, seawater desalination, photothermal treatment and other important fields. In order to develop next generation photothermal materials, four polyoxometalates, [(CH₃)₂NH₂]₁₂H₅[Ni₃Mo₁₈O₅₄(HPO₃)₁₀(PO₄)]·18H₂O (Compound 1), [(CH₃)₂NH₂]₁Na₁₁[Ni₂Mo₈O₂₂(HPO₃)₁₀]·16H₂O (Compound 2), Na₁₅(OH)₅[Mo₆O₁₈(HPO₃)₄]₂[MoO]_1.5·16H₂O (Compound 3), [(CH₃)₂NH₂]₄Na₁₁[Na[Mo₆O₁₅(HPO₃)₄]₂]·18H₂O (Compound 4), are successfully designed and synthesized via a microwave-assisted reaction protocol. Compounds 1–4 not only exhibit broad absorption and notable photothermal conversion effects in near-infrared (NIR) region, but also have high photothermal conversion efficiencies and high quality NIR photothermal imaging effects under NIR laser irradiation. Compound 1 shows the best photothermal conversion effect, and it provides a unique model to explore the relationship between the complex metal oxide structure and photothermal conversion behavior at the molecular level. Both the experimental results and theoretical calculations consistently conclude that the charge and degree of electron delocalization on the Cluster have a robust influence on the photothermal conversion, as well as the aggregation microstructures.

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微波辅助合成聚氧化磷钼酸盐衍生物的光热转换特性研究

光热转换是太阳能收集、海水淡化、光热处理等重要领域的关键技术之一。为了开发新一代光热材料，四种聚氧化金属盐[(CH3)2NH2]12H5[Ni3Mo18O54(HPO3)10(PO4)]-18H2O（化合物 1）、[(CH3)2NH2]1Na11[Ni2Mo8O22(HPO3)10]-16H2O（化合物 2）、Na15(OH)5[Mo6O18(HPO3)4]2[MoO]1.5-16H2O（化合物 3）、[(CH3)2NH2]4Na11[Na[Mo6O15(HPO3)4]2]-18H2O（化合物 4）。化合物 1-4 不仅在近红外（NIR）区域表现出宽吸收和显著的光热转换效应，而且在近红外激光照射下具有较高的光热转换效率和高质量的近红外光热成像效果。化合物 1 显示出最佳的光热转换效果，为从分子水平探索复杂的金属氧化物结构与光热转换行为之间的关系提供了一个独特的模型。实验结果和理论计算一致得出结论：簇上的电荷和电子析出程度对光热转换以及聚集微结构有很大的影响。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.