东华理工大学杨国平团队和北京理工大学胡长文团队综述 | 含铀多金属氧簇的最新进展

Uranium is one of the most important strategical resources in the nuclear industry and has a strong coordination basis to build diverse U-containing polyoxometalates (U-POMs). Due to the unique chemical characteristic of uranium, U-POMs exhibit great potential in the field of luminescent materials, catalysis (thermocatalysis, photocatalysis, etc.), photoelectric materials, sensors, devices, and so on. The study of U-POMs may also be beneficial to the research of the migration behavior of radionuclides in the environment, understanding the geochemical reactions, the development of new remediation strategies and nuclear fuel cycle technologies. However, one could be aware that the development of U-POMs is still relatively slow despite the early study of U-POMs beginning in the 1990s. The current situation of U-POMs is that knowledge of the structural diversities and the involved elements are still deficient, and the properties and applications of U-POMs are even less explored. Thus, it is quite necessary to summarize the development of U-POMs and set a clear direction for future research.

Recently, Guo-Ping Yang’s and Chang-Wen Hu’s group have highlighted the recent advances in uranium-containing polyoxometalates as a review. The structural diversities of U-POMs could be revealed from the classification in this review, which was mainly divided into two parts according to the main metal elements of clusters, named U-containing hetero-polyoxometalates (U-hetero-POMs) and U-oxo-clusters. For U-hetero-POMs, early transition metal elements (W etc.) are the main element of clusters and uranium is the heterometal ions. For U-oxo-clusters, uranium atoms are the main building units of clusters. The U-hetero-POMs were identified taking time as an order from the end of the 20^th century based on the building units, including Keggin-type, Dawson-type, Silverton-type, hybrid structures, and cryptand structures. U-oxo-clusters reported in recent years were also discussed, including uranyl peroxide clusters, POMs-related uranium phosphates derivatives, U-oxo-clusters containing other transition metals, U^IV-oxo-clusters and mixed-valence U^IV-oxo-clusters.

They summarized the synthetic methods, structural features, characterization techniques and properties of U-POMs. The primary several applications of U-POMs were detailedly discussed including disposal of radionuclides, luminescence, organic catalysis, nuclear fuel cycle, solid-state electrolytes, and semiconductor material. Several directions in synthesis and structures were presented, (i) in situ and hydrothermal methods and more synthesis strategies and methodologies should be introduced; (ii) U-hetero-POMs with organic-inorganic hybrid structures may be beneficial for application development; (iii) more structures based on other early elements (Mo, V, Nb, Ta, etc.) should be developed; (iv) U-oxo-clusters in typical types of POMs (Keggin, Lindqvist, etc.) may help to broaden the scope of U-POMs. Finally, several directions of the potential applications in magnetism, luminescence materials, organic catalysis, photocatalysis, semiconductor materials, etc. for further research were proposed.

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Recent advances in uranium-containing polyoxometalates

Guo-Ping Yang, Ke Li and Chang-Wen Hu

Inorg. Chem. Front., 2022, 9, 5408-5433

https://doi.org/10.1039/D2QI01834A

*文中图片皆来源上述文章

通讯作者简介

杨国平 副教授

东华理工大学 化学生物与材料科学学院

Dr. Guo-Ping Yang received his Ph. D. degree from Beijing Institute of Technology in 2019 under the direction of Prof. Chang-Wen Hu. Then, he joined the Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation of East China University of Technology. He focuses his research on exploring the synthesis, crystal structure, and properties of novel uranium-containing POMs, and the green catalytic organic synthesis of POMs.

胡长文 教授

北京理工大学 化学与化工学院

Prof. Chang-Wen Hu received Ph. D. from University of Tokyo in 1993 and worked as a JSPS visiting professor at the Tokyo Institute of Technology and National Institute of Advanced Science and Technology (AIST), Japan before joining the Beijing Institute of Technology in 2002. He received The MOE Natural Science Award (First Prize) in 2012 and The MOE Technological Progress Award (Third Prize) in 1999. He has authored or co-authored over 200 peer-reviewed papers and was honored as one of The Most Cited Chinese Researchers of 2015 (Thomson Reuters). His research interest involves energy storage and conversion, multifunctional nanomaterial, polyoxometalate chemistry, and CO₂ chemistry.

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