Ruthenium-loaded cerium dioxide nanocomposites with rich oxygen vacancies promoted the highly sensitive electrochemical detection of Hg(II)

doi:10.1016/j.snb.2020.128355

	Ruthenium-loaded cerium dioxide nanocomposites with rich oxygen vacancies promoted the highly sensitive electrochemical detection of Hg(II)
	Sun, Yu-Feng 3; Li, Jing-Jing 3; Xie, Feng 2; Wei, Yan 1; Yang, Meng 2
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2020-10-01
卷号	320
关键词	Ru/CeO2 nanocomposites Oxygen vacancies Electroanalysis of Hg(II) High sensitivity and stability Real sample analysis
DOI	10.1016/j.snb.2020.128355
通讯作者	Yang, Meng(myang@iim.ac.cn)
英文摘要	Metal oxides nanomaterials are limited in electrochemical detection of heavy metal ions (HMIs) because of their poor conductivity and less active sites, which hinders electron transport and reduce the redox rate of HMIs, making it difficult to achieve sensitive and accurate detection of trace pollutions. Herein, Ru-loaded cerium dioxide nanocubes (Ru/CeO2) with rich oxygen vacancies (OVs) was developed to construct electrochemical sensing interface. An unexpected sensitivity of up to 2169.8 mu A mu M-1 cm(-2) was obtained with a detection limit of 0.019 mu M in the detection of Hg(II). The predominantly exposed highly active (100) crystal facets and abundant OVs on the surface of CeO2 nanocubes, as well as Ru nanoparticles with excellent metal activity, providing large amounts of reactive oxygen species and active sites, thereby enhancing the conductivity and adsorption capacity of the nanocomposites. Ultimately, the outstanding electrochemical signal was achieved by promoting the redox reaction of Hg(II). In addition, the proposed method shows the excellent stability and high anti-interference ability, and the accurate analysis of Hg(II) in real water samples was realized. This finding provides a good strategy for the development of nano-metal oxide with OVs for the reliable determination of trace heavy metal substance.
资助项目	postdoctoral innovation talents supporting project of China[BX20180311] ; China Postdoctoral Science Foundation[2019M652220] ; natural science foundation of Anhui Province ; Anhui Province[2018B244] ; national natural science foundation of China[21735005]
WOS关键词	HEAVY-METAL IONS ; CEO2 NANOPARTICLES ; FLUORESCENT-PROBE ; CARBON NANOTUBES ; MIMETIC ACTIVITY ; HOLLOW SPHERES ; GRAPHENE OXIDE ; MERCURY ; WATER ; OXIDATION
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000557930900002
资助机构	postdoctoral innovation talents supporting project of China ; China Postdoctoral Science Foundation ; natural science foundation of Anhui Province ; Anhui Province ; national natural science foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70823]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Meng
作者单位	1.Wannan Med Coll, Dept Chem, Wuhu 241002, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China 3.Anhui Polytech Univ, Key Lab High Performance Nonferrous Met Anhui Pro, Wuhu 241000, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yu-Feng,Li, Jing-Jing,Xie, Feng,et al. Ruthenium-loaded cerium dioxide nanocomposites with rich oxygen vacancies promoted the highly sensitive electrochemical detection of Hg(II)[J]. SENSORS AND ACTUATORS B-CHEMICAL,2020,320.
APA	Sun, Yu-Feng,Li, Jing-Jing,Xie, Feng,Wei, Yan,&Yang, Meng.(2020).Ruthenium-loaded cerium dioxide nanocomposites with rich oxygen vacancies promoted the highly sensitive electrochemical detection of Hg(II).SENSORS AND ACTUATORS B-CHEMICAL,320.
MLA	Sun, Yu-Feng,et al."Ruthenium-loaded cerium dioxide nanocomposites with rich oxygen vacancies promoted the highly sensitive electrochemical detection of Hg(II)".SENSORS AND ACTUATORS B-CHEMICAL 320(2020).