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Fabrication of strongly adherent platinum black coatings on microelectrodes array

Science China(Information Sciences) 2014年第4期57卷 208-217页

作者： TANG RongYu PEI WeiHua CHEN SanYuan ZHAO Hui CHEN YuanFang HAN Yao WANG ChunLan CHEN HongDa State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of Sciences State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of Sciences Beijing 100083 China Department of Tissue Engineering Institute of Basic Medical Sciences and Tissue Engineering Research CenterAcademy of Military Medical Sciences

platinum black coating can effectively improve the performance of MEAs(microelectrodes array)in neural signal transduction,though its lack of adhesion strength and durability tampers its usage in long term *** a new method of composite electrodeposition provides highly adhesive platinum black coating that enables MEAs for a month’s long task and repeatable *** new method was compared with present techniques on multiple aspects,*** surface area,surface morphology,interfacial impedance,durability and real application *** show that the new composite coating provides greatly improved durability without compromising its *** cells were cultured on these MEAs for 40 days in vitro and spontaneous action potentials with high signal/noise ratio were *** model and simulation provided preliminary understanding on the mechanism of this strengthened platinum black coating.

关键词： microelectrode array platinum black electroplating electrophysiology neural culture

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Disposable Electrochemical Biosensor for Amperometric Measurement of β-hydroxybutyrate and Total Cholesterol

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稀有金属材料与工程 2006年第A3期35卷 305-308页

作者： Huaqing Li Li Wang Nenggao Rao Dafu Cui Xinxia Cai State Key Laboratory of Transducer Technology Institute of Electronics Chinese Academy of Sciences Beijing 100080 China Graduate School of Chinese Academy of Science Beijing 100080 China

A new type of disposable thin-film amperometric biosensor has been developed for measurement ofβ-hydroxybutyrate and total cholesterol in *** biosensor consists of two plain gold electrodes mounted on a Polyethylene terephthalate (PET) *** reagent solution contains bienzymes (cholesterol oxidase and cholesterol esterase for total cholesterol,β-hydroxybutyrate dehydrogenase and diaphorase forβ-hydroxybutyrate respectively) with mediator (ferricyanide) were absorption at the surface of electrodes coated by electrodepositing platinum *** presence of the mediator lowers the applied potential and eliminates the interference from other oxidizable species enhancing the sensitivity and selectivity of the biosensor without modifying the dynamic parameters of the *** enzymes stably retains in the matrices of platinum black film improving the performance of the mediated *** linearity is observed in the concentration range from 1.0×10^(-4) to 1.0×10^(-2) mM and 1.0×10^(-4) mM to 4.99×10^(-3) mM with sensitivity of 1.958μA/mM and 2.447μA/mM *** optimized biosensor exhibits excellent reproducibility and stability retaining more than 90% of its original activity over a period of one *** simple operation of the biosensor mass-produced at low cost is expected to find clinical application and homecare.

关键词： amperometric β-Hydroxybutyrate total cholesterol ferricyanide platinum black

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Disposable Electrochemical Biosensor for Amperometric Measurement of β-hydroxybutyrate and Total Cholesterol

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稀有金属材料与工程 2006年第S3期 305-308页

作者： Huaqing Li~(1,2) Li Wang~1 Nenggao Rao~1 Dafu Cui~1 Xinxia Cai~(1,2) (1.State Key Laboratory of Transducer Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100080,China) (2.Graduate School of Chinese Academy of Science,Beijing 100080,China)

A new type of disposable thin-film amperometric biosensor has been developed for measurement ofβ-hydroxybutyrate and total cholesterol in *** biosensor consists of two plain gold electrodes mounted on a Polyethylene terephthalate （PET） *** reagent solution contains bienzymes （cholesterol oxidase and cholesterol esterase for total cholesterol,β-hydroxybutyrate dehydrogenase and diaphorase forβ-hydroxybutyrate respectively） with mediator （ferricyanide） were absorption at the surface of electrodes coated by electrodepositing platinum *** presence of the mediator lowers the applied potential and eliminates the interference from other oxidizable species enhancing the sensitivity and selectivity of the biosensor without modifying the dynamic parameters of the *** enzymes stably retains in the matrices of platinum black film improving the performance of the mediated *** linearity is observed in the concentration range from 1.0×10-4to 1.0×10-2mM and 1.0×10-4mM to 4.99×10-3mM with sensitivity of 1.958μA/mM and 2.447μA/mM *** optimized biosensor exhibits excellent reproducibility and stability retaining more than 90% of its original activity over a period of one *** simple operation of the biosensor mass-produced at low cost is expected to find clinical application and homecare.

关键词： amperometric β-Hydroxybutyrate total cholesterol ferricyanide platinum black

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Pt Supported on Plasma-Chemical Titanium Nitride for Efficient Room-Temperature CO Oxidation

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Modern Research in Catalysis 2022年第1期11卷 1-11页

作者： David Correa Coyac Eugene Kabachkov Eugene Kurkin Nikolay Vershinin Igor Balikhin Viktor Berestenko Alexandre Michtchenko Yury Shulga Instituto Politécnico Nacional SEPI-ESIME-Zacatenco Av. IPN S/N Ed.5 3-r piso Ciudad de Mexico Mexico Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry Russian Academy of Sciences Chernogolovka Russian Federation Institute of Solid State Physics Russian Academy of Sciences Chernogolovka Russian Federation

Catalysts of carbon monoxide oxidation were synthesized by deposition of platinum on titanium nitride (TiN). Two substrates with an average particle size of 18 and 36 nm were obtained by hydrogen reduction of titanium tetrachloride in a stream of microwave plasma of nitrogen. The surface of the catalysts was studied by X-ray photoelectron spectroscopy (XPS). The data obtained by us in the present work indicate the presence of oxynitride as a transition layer between nitride and oxide. It was found that the CO oxidation rate on the 9 - 15 wt.% Pt loaded TiN catalysts is 120 times higher than that on the platinum black with a specific surface of 30 m2/g. Increase in the reaction rate of CO oxidation on Pt/TiN catalysts as compared to platinum black can be associated with both an increase in the concentration of CO molecules adsorbed and a decrease in the activation energy of the reaction. Catalysts are promising for use in catalytic air purification systems.

关键词： CO Oxidation Titanium Nitride Pt/TiN Catalysts Carbon Monoxide Microwave Plasma platinum black X-Ray Photoelectron Spectroscopy

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