A solid-contact potassium-selective electrode with MoO2 microspheres as ion-to-electron transducer

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	A solid-contact potassium-selective electrode with MoO2 microspheres as ion-to-electron transducer
	Zeng, Xianzhong 1,2; Qin, Wei1
刊名	ANALYTICA CHIMICA ACTA
	2017-08-22
卷号	982 页码:72-77
关键词	Solid contact Ion-selective electrode Ion-to-electron transducer MoO2 microspheres Metallic analogue
ISSN号	0003-2670
英文摘要	A solid-contact ion-selective electrode (SC-ISE) for potassium with MoO2 microspheres as ion-to-electron transducer is described. MoO2 microsphers can be synthesized via the reduction of MoO3 nanobelts in an isopropanol solvent with a mild process, and the obtained MoO2 microspheres have been characterized by X-ray diffraction and field-emission scanning electron microscopy. With the application of MoO2 microspheres, the newly fabricated SC-ISE for K+ exhibits a stable and rapid potential response. A near Nernstian slope of 55 mV/decade to potassium activities in the range of 10(-5). 10(-3) M is found and the detection limit is 10(-5.5) M. Impedance spectra and chronopotentiometry results show that a smaller resistance together with a larger double layer capacitance is guaranteed due to the introduction of the intermediate layer of MoO2 microspheres. Additionally, light, O-2 and CO2 do not induce significant influences to the present SC-ISE, and a reduced water layer between the ion selective membrane and the underlying conductor is formed. Thus, it is clear that MoO2 microspheres, as metallic analogues, can be used as a good candidate for the new type of transducing layer in SC-ISEs. (C) 2017 Elsevier B.V. All rights reserved.
研究领域[WOS]	Chemistry
关键词[WOS]	MEMBRANE ; MOLYBDENUM ; CARBON ; ANODE ; NANOPARTICLES ; PERFORMANCE ; BATTERIES ; NANOBELTS ; CAPACITY ; NANORODS
收录类别	SCI
语种	英语
WOS记录号	WOS:000405824300008
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/22518]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC, Shandong Prov Key Lab Coastal Environm Proc,YICCA, Yantai 264003, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Xianzhong,Qin, Wei. A solid-contact potassium-selective electrode with MoO2 microspheres as ion-to-electron transducer[J]. ANALYTICA CHIMICA ACTA,2017,982:72-77.
APA	Zeng, Xianzhong,&Qin, Wei.(2017).A solid-contact potassium-selective electrode with MoO2 microspheres as ion-to-electron transducer.ANALYTICA CHIMICA ACTA,982,72-77.
MLA	Zeng, Xianzhong,et al."A solid-contact potassium-selective electrode with MoO2 microspheres as ion-to-electron transducer".ANALYTICA CHIMICA ACTA 982(2017):72-77.