{"title":"Polyoxometalate-Encapsulated Metal-Organic Framework for Photocatalytic Uranium Isolation","authors":"Zhimin Dong, Dongling Zeng, Zifan Li, Junjie Chen, Youqun Wang, Xiao Hong Cao, Guo-Ping Yang, Zhibin Zhang, Yunhai Liu, Feng Yang","doi":"10.1039/d4sc05349d","DOIUrl":null,"url":null,"abstract":"Recycling uranium (U) via adsorption and controlled conversion is crucial for the sustainable development of nuclear energy, in which photocatalytic reduction of U(VI) from aqueous solution is considered one of the most effective strategies. The primary challenge in the photocatalytic elimination of U(VI) resides in the demand for photocatalysts possessing exceptional attributes in visible light utilization effective U(VI) adsorption and charge separation. Herein, we developed the hybrids of polyoxometalate@Cu-metal-organic frameworks (POM@Cu-MOFs) through a self-assembly strategy and demonstrated the efficient removal of U(VI) via synergistic adsorption and photocatalysis. The abundant oxygen-rich groups in POM served as the adsorption sites, endowing POM@Cu-MOFs with a remarkable removal capacity (1987.4 mg·g-1 under light irradiation) to remove 99.4% of UO22+. The attraction of electrons from Cu atoms within Cu-MOFs effectively accelerated the carrier dynamics due to their pronounced electronegativity. The mechanism associated with the synergetic effects of adsorption and photocatalytic reduction of U(VI) was proposed. This work paves a feasible approach for efficiently eliminating U(VI) from aqueous solutions in environmental pollution cleanup using the POM@Cu-MOF photocatalyst.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":null,"pages":null},"PeriodicalIF":7.6000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4sc05349d","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Recycling uranium (U) via adsorption and controlled conversion is crucial for the sustainable development of nuclear energy, in which photocatalytic reduction of U(VI) from aqueous solution is considered one of the most effective strategies. The primary challenge in the photocatalytic elimination of U(VI) resides in the demand for photocatalysts possessing exceptional attributes in visible light utilization effective U(VI) adsorption and charge separation. Herein, we developed the hybrids of polyoxometalate@Cu-metal-organic frameworks (POM@Cu-MOFs) through a self-assembly strategy and demonstrated the efficient removal of U(VI) via synergistic adsorption and photocatalysis. The abundant oxygen-rich groups in POM served as the adsorption sites, endowing POM@Cu-MOFs with a remarkable removal capacity (1987.4 mg·g-1 under light irradiation) to remove 99.4% of UO22+. The attraction of electrons from Cu atoms within Cu-MOFs effectively accelerated the carrier dynamics due to their pronounced electronegativity. The mechanism associated with the synergetic effects of adsorption and photocatalytic reduction of U(VI) was proposed. This work paves a feasible approach for efficiently eliminating U(VI) from aqueous solutions in environmental pollution cleanup using the POM@Cu-MOF photocatalyst.
期刊介绍:
Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.