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

doi:10.3389/fmats.2022.1038310

CORC > 海洋研究所 > 中国科学院海洋研究所

	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
刊名	FRONTIERS IN MATERIALS
	2022-10-18
卷号	9 页码:9
关键词	electrochemistry SIMFUEL hydrogen peroxide UO2 rare earth dopants
ISSN号	2296-8016
DOI	10.3389/fmats.2022.1038310
通讯作者	Zhu, Ziyan(zzhu46@uwo.ca)
英文摘要	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.
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
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000878409600001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/180482]
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.