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Adsorbent Assisted in Situ Electrocatalysis: An Ultra-Sensitive Detection of As(III) in Water at Fe3O4 Nanosphere Densely Decorated with Au Nanoparticles
Wei, Juan1,2; Li, Shan-Shan1,2; Guo, Zheng1; Chen, Xing1; Liu, Jin-Huai1; Huang, Xing-Jiu1,2
2016-01-19
Source PublicationANALYTICAL CHEMISTRY
AbstractMost gold nanoparticle-based electrodes have been utilized for the analysis of highly toxic As(III), while nano-Fe3O4 materials are currently attracting considerable interest as an adsorbent for the removal of As(III). However, the combination of gold nanoparticles with Fe3O4 nanoadsorbents for stripping voltammetry is, to the best of our knowledge, unexplored. Here, a sensing interface for ultrasensitive detection of As(III) is designed and constructed by abundantly dispersing Au nanoparticles (Au NPs) on the surface of the Fe3O4 nanosphere. The Au@Fe3O4 nanospheres are covered by the room temperature ionic liquid (RTIL) and then modified on the screen-printed carbon electrode (SPCE). By combining the excellent catalytic properties of the Au nanoparticles (similar to 3-9 nm in diameter) with the good adsorption capacity of Fe3O4 nanospheres toward As(III), as well as the good conductivity of RTIL, the Au@Fe3O4-RTIL shows excellent performance in the detection of arsenic under nearly neutral conditions without modifying the morphology of the sensing interface. Through optimization of the experimental conditions, an ultrahigh sensitivity of 458.66 mu A ppb(-1) cm(-2) from 0.1 to 1 ppb with a detection limit (3 sigma method) of 0.0022 ppb was obtained. The reproducibility and reliability of the Au@Fe3O4-RTIL sensing interface was also evaluated with good results. Finally, we used this platform to analyze real samples.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/acs.analchem.5b02947
WOS KeywordANODIC-STRIPPING VOLTAMMETRY ; TOXIC METAL-IONS ; ATOMIC FLUORESCENCE SPECTROMETRY ; GOLD NANOELECTRODE ENSEMBLES ; HIGHLY SELECTIVE DETECTION ; GLASSY-CARBON ELECTRODE ; THIN-FILM ELECTRODE ; ELECTROCHEMICAL DETECTION ; CYCLIC VOLTAMMETRY ; DRINKING-WATER
Indexed BySCI
Language英语
Funding OrganizationNational Basic Research Program of China(2011CB933700 ; National Basic Research Program of China(2011CB933700 ; National Basic Research Program of China(2011CB933700 ; National Basic Research Program of China(2011CB933700 ; National High Technology Research and Development Program of China (863 Program)(2013AA065602) ; National High Technology Research and Development Program of China (863 Program)(2013AA065602) ; National High Technology Research and Development Program of China (863 Program)(2013AA065602) ; National High Technology Research and Development Program of China (863 Program)(2013AA065602) ; National Natural Science Foundation of China(21475133 ; National Natural Science Foundation of China(21475133 ; National Natural Science Foundation of China(21475133 ; National Natural Science Foundation of China(21475133 ; Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure(SKL201312SIC) ; Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure(SKL201312SIC) ; Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure(SKL201312SIC) ; Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure(SKL201312SIC) ; 2013CB934300) ; 2013CB934300) ; 2013CB934300) ; 2013CB934300) ; 21377131 ; 21377131 ; 21377131 ; 21377131 ; 61474122) ; 61474122) ; 61474122) ; 61474122)
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000368562300016
Citation statistics
Cited Times:61[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/22268
Collection中科院合肥智能机械研究所
Affiliation1.Chinese Acad Sci, Inst Intelligent Machines, Nanomat & Environm Detect Lab, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Wei, Juan,Li, Shan-Shan,Guo, Zheng,et al. Adsorbent Assisted in Situ Electrocatalysis: An Ultra-Sensitive Detection of As(III) in Water at Fe3O4 Nanosphere Densely Decorated with Au Nanoparticles[J]. ANALYTICAL CHEMISTRY,2016,88(2):1154-1161.
APA Wei, Juan,Li, Shan-Shan,Guo, Zheng,Chen, Xing,Liu, Jin-Huai,&Huang, Xing-Jiu.(2016).Adsorbent Assisted in Situ Electrocatalysis: An Ultra-Sensitive Detection of As(III) in Water at Fe3O4 Nanosphere Densely Decorated with Au Nanoparticles.ANALYTICAL CHEMISTRY,88(2),1154-1161.
MLA Wei, Juan,et al."Adsorbent Assisted in Situ Electrocatalysis: An Ultra-Sensitive Detection of As(III) in Water at Fe3O4 Nanosphere Densely Decorated with Au Nanoparticles".ANALYTICAL CHEMISTRY 88.2(2016):1154-1161.
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