A review on uranyl-based photocatalysts in photocatalytic organic transformation

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL Journal of Catalysis Pub Date : 2024-12-12 DOI:10.1016/j.jcat.2024.115900

Peng Gao, Zewen Shen, Yana Chen, Tao Jiang, Zhuoyu Ji, Guixia Zhao, Junrong Yue, Yezi Hu, Xiangke Wang, Xiubing Huang, Martin Muhler, Lisha Yin

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Abstract

Depleted uranium as a mildly radioactive waste product from the ²³⁵U enrichment process is stocked worldwide, which can be considered as ideal photocatalyst for light-driven photo-redox reactions. Under light irradiation, the generated excited-state *UO₂²⁺ possesses strong oxidative ability and long-lived fluorescence lifetime via ligand to metal charge transfer (LMCT), which can be effectively quenched by organic substrates via hydrogen atom transfer (HAT) and single electron transfer (SET) processes. The applications of both homogeneous and heterogeneous uranyl-based photocatalysts (including uranyl salts, uranyl-loading composite catalysts, uranyl-based complexes, and uranyl-based metal–organic frameworks) exhibit their advances in unique electronic structure, excellent photochemical properties, and outstanding photocatalytic performance in organic photo-transformation reactions. This review is to highlight the light-driven transformation of organic substances over various types of homogeneous and heterogeneous uranyl-based photocatalysts. The current research survey verifies that spent nuclear waste possesses great potential to construct efficient photocatalysts for light-driven organics transformation.

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贫铀是 235U 浓缩过程中产生的一种轻度放射性废料，在世界各地都有库存，可被视为光驱动光氧化还原反应的理想光催化剂。在光照射下，生成的激发态 *UO22+ 通过配体到金属的电荷转移（LMCT）具有很强的氧化能力和长寿命荧光，有机底物可通过氢原子转移（HAT）和单电子转移（SET）过程有效地淬灭这种荧光。均相和异相铀酰基光催化剂（包括铀酰盐、铀酰负载复合催化剂、铀酰基配合物和铀酰基金属有机框架）在有机光转化反应中的应用展示了其独特的电子结构、优异的光化学性能和出色的光催化性能。本综述将重点介绍有机物在各类均相和异相铀酰基光催化剂上的光驱动转化。目前的研究调查证实，乏核废料在构建光驱动有机物转化的高效光催化剂方面具有巨大潜力。

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.