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Uranium electrolytic deposition with regenerable Se2- active sites at low cell voltage

文献类型：期刊论文

作者Jiao, Ranran2,4; Zhou, Hongyan3; Wang, De2,4; Zeng, Suyuan2,3; Li, Jiaxing1,2,4
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2024-11-01
卷号499
关键词Uranium extraction Spontaneous reduction Electrolytic deposition Co3Se4
ISSN号1385-8947
DOI10.1016/j.cej.2024.156227
通讯作者Zeng, Suyuan(drzengsy@163.com) ; Li, Jiaxing(lijx@ipp.ac.cn)
英文摘要The electrochemical extraction of uranium from wastewater represents an effective strategy for the sustainable supply of fuel and the protection of the environmental. However, the rational design of high-efficiency electrocatalysts remains a significant challenge, largely due to the lack of research on the structure-activity relationship. In this study, we developed a novel electrocatalysis based method for the extraction of uranium in solution, combining the redox of selenium (Se2-/Se4+) and uranium extraction. This method enables the high-efficiency extraction uranium in solution, even at relatively low cell voltages of 1 V. The Co3Se4-based electrocatalyst exhibits excellent UO22+ capture properties, endowing it with an electrolytic deposition capacity of 2264 mg g(-1) at the concentration of 560 mg L-1 within 48 h. Even in a low concentration uranium solution (5 mg L-1), the extraction capacity can still reach 199.2 mg g(-1). X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) revealed that the main active sites of Co3Se4 were renewable Se2- sites. The absorbed UO22+ can be spontaneously reduced to the unstable U(V) intermediate by reversible electron transfer, and then re-oxidized to (UO2)O-22H(2)O in the presence of hydrogen peroxide (H2O2). The significant discovery provides a novel electrochemical medium, elucidates the mechanism of the uranium extraction process, and introduces a novel strategy for harvesting U from wastewater.
WOS关键词REDUCTION ; PEROXIDE
资助项目National Natural Science Foundation of China[22276195] ; National Key Research and Devel-opment Project[2020YFC1806602] ; Priority Aca-demic Program Development of Jiangsu Higher Education Institutions ; Natural Science Foundation of Shandong Province[ZR2016BQ41]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001331470800001
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; National Key Research and Devel-opment Project ; Priority Aca-demic Program Development of Jiangsu Higher Education Institutions ; Natural Science Foundation of Shandong Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/134600]  
专题中国科学院合肥物质科学研究院
通讯作者Zeng, Suyuan; Li, Jiaxing
作者单位1.Jiangsu Higher Educ Inst, Collaborat Innovat Ctr Radiat Med, Nanjing, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
3.Liaocheng Univ, Sch Chem & Chem Engn, Liaocheng 252059, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Jiao, Ranran,Zhou, Hongyan,Wang, De,et al. Uranium electrolytic deposition with regenerable Se2- active sites at low cell voltage[J]. CHEMICAL ENGINEERING JOURNAL,2024,499.
APA Jiao, Ranran,Zhou, Hongyan,Wang, De,Zeng, Suyuan,&Li, Jiaxing.(2024).Uranium electrolytic deposition with regenerable Se2- active sites at low cell voltage.CHEMICAL ENGINEERING JOURNAL,499.
MLA Jiao, Ranran,et al."Uranium electrolytic deposition with regenerable Se2- active sites at low cell voltage".CHEMICAL ENGINEERING JOURNAL 499(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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