The kinetics of hydrogen peroxide reduction on rare earth doped UO2 and SIMFUEL

doi:10.3389/fmats.2022.1038310

IOCAS-IR

	The kinetics of hydrogen peroxide reduction on rare earth doped UO2 and SIMFUEL
	Zhu, Ziyan 1; Ly, Malin 1; Liu, Nazhen 2; Noel, James J.1,3; Shoesmith, David W.1,3
	2022-10-18
发表期刊	FRONTIERS IN MATERIALS
ISSN	2296-8016
卷号	9 页码:9
通讯作者	Zhu, Ziyan(zzhu46@uwo.ca)
摘要	The electrochemical reduction of hydrogen peroxide has been studied in sodium chloride solutions containing various anions (bicarbonate/carbonate, sulphate) on Gd-UO2, Dy-UO2 and a SIMFUEL (UO2 doped to simulate spent nuclear fuel). The reaction was observed to proceed via the chemical oxidation of the surface to produce U-V followed by its subsequent electrochemical reduction. The reaction was faster on the SIMFUEL surface due to the availability of the oxygen vacancies required to incorporate the O-II ions necessary to maintain charge balance. Bicarbonate/carbonate, but not sulphate, was found to suppress peroxide reduction. This could be caused either by peroxide decomposition in solution or by the catalysis of peroxide reformation via the reaction of surface hydroxyl radicals with bicarbonate/carbonate to form carbonate radicals which subsequently decompose by reaction with water. The noble metal particles present in the SIMFUEL appear to play only a minor role in the reduction process.
关键词	electrochemistry SIMFUEL hydrogen peroxide UO2 rare earth dopants
DOI	10.3389/fmats.2022.1038310
收录类别	SCI
语种	英语
资助项目	Natural Sciences and Engineering Research Council (NSERC, Ottawa)[CRDPJ 507465-16] ; Nuclear Waste Management Organization (NWMO, Toronto)[CRDPJ 507465-16]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000878409600001
出版者	FRONTIERS MEDIA SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180483
专题	中国科学院海洋研究所
通讯作者	Zhu, Ziyan
作者单位	1.Univ Western Ontario, Dept Chem, London, ON, Canada 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 3.Univ Western Ontario, Surface Sci Western, London, ON, Canada
推荐引用方式 GB/T 7714	Zhu, Ziyan,Ly, Malin,Liu, Nazhen,et al. The kinetics of hydrogen peroxide reduction on rare earth doped UO2 and SIMFUEL[J]. FRONTIERS IN MATERIALS,2022,9:9.
APA	Zhu, Ziyan,Ly, Malin,Liu, Nazhen,Noel, James J.,&Shoesmith, David W..(2022).The kinetics of hydrogen peroxide reduction on rare earth doped UO2 and SIMFUEL.FRONTIERS IN MATERIALS,9,9.
MLA	Zhu, Ziyan,et al."The kinetics of hydrogen peroxide reduction on rare earth doped UO2 and SIMFUEL".FRONTIERS IN MATERIALS 9(2022):9.

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