A catalytic activity of a mercury electrode towards dioxygen reduction in room-temperature ionic liquids

Islam, Md. Mominul; Ferdousi, Begum Nadira; Okajima, Takaharu; Ohsaka, Takeo

doi:10.1016/j.elecom.2005.04.037

Cited by 39 publications

(75 citation statements)

References 24 publications

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“…Ion-pairing effects on the redox reactions have been often observed and discussed based on the formation of an ion pair between the cation of the supporting electrolyte and the negatively charged electrogenerated species [30,31]. Recently, Fry et al [32] reported computations that the positive charge in a quaternary ammonium cation is mainly concentrated on the alpha-methylene groups attached to the central nitrogen, and this highest degree charge on the alpha-methylene groups responsible for ion pairing decreases as the size of the quaternary ammonium cation increases.…”

Section: Resultsmentioning

confidence: 99%

Roles of ion pairing on electroreduction of carbon dioxide based on imidazolium-based salts

Niu

Wang

et al. 2015

Electrochimica Acta

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Section: Resultsmentioning

confidence: 99%

Roles of ion pairing on electroreduction of carbon dioxide based on imidazolium-based salts

Niu

Wang

et al. 2015

Electrochimica Acta

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“…Room temperature ionic liquids (RTILs), composed of an organic cation and either an organic or an inorganic anion, have been increasing attention in electroanalytical chemistry (Islam et al 2005). They possess unique properties such as negligible vapor pressure, wide potential windows, high thermal stability and viscosity, good conductivity, and solubility (Lu et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid and nanogold-modified immunosensing interface for electrochemical immunoassay of hepatitis B surface antigen in human serum

Tang

Liao

2008

Microfluid Nanofluid

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A mediator-free electrochemical immunoassay protocol based on a disposable immunosensor for the detection of hepatitis B surface antigen (HBsAg) in human serum was developed. To fabricate such an immunosensor, a layer of sol-gel composite film containing room temperature ionic liquid and chitosan was initially formed on a glassy carbon electrode. Nanogold particles were then adsorbed onto the membrane via the amine groups of chitosan molecules, and then horseradish peroxidase (HRP)-labeled hepatitis B surface antibodies (HRP-antiHBs) were immobilized onto the nanogold surface. With a non-competitive immunoassay format, the antibody-antigen complex could be formed by a simple one-step immunoreaction between the immobilized HRP-anti-HBs and HBsAg in sample solution. The formed immunocomplex inhibited partly the active center of the HRP, which decreased the immobilized HRP toward the reduction of H 2 O 2 . The performance and factors influencing the performance of the immunosensor were evaluated. Under optimal conditions, the current change obtained from the carried HRP relative to H 2 O 2 system was proportional to HBsAg concentration in the range of 1.5-400 ng/mL with a detection limit of 0.5 ng/mL (at 3d). The reproducibility, selectivity, and stability of the proposed immunosensor were acceptable. Moreover, the proposed immunosensors were used to analyze HBsAg in human serum specimens. Analytical results of clinical samples suggested that the developed immunosensor has a promising alternative approach for detecting HBsAg in the clinical diagnosis.

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“…24 Anees A et al have fabricated an amperometric biosensor employing sol-gel derived nano-structured cerium oxide (NS-CeO2) film as matrix to immobilize the Cholesterol oxidase. 25 Recently, room temperature ionic liquids (RTILs) have been reported to have promising applications in the fabrication of the biosensors, 26 which have drawn significant interest because of its unique properties such as negligible vapor pressure, wide potential windows, high thermal stability and viscosity, good conductivity and solubility. 27 Zhang et al used 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF 6 ) supported CeO2 nanoshuttles-carbon nanotubes composite as a platform for impedance DNA hybridization sensing in hope of enhancing the sensitivity of the biosensor.…”

Section: Introductionmentioning

confidence: 99%

Amperometric Immunosensor for Myeloperoxidase in Human Serum Based on a Multi-wall Carbon Nanotubes-Ionic Liquid-Cerium Dioxide Film-modified Electrode

Lu¹,

Liu²,

Liu³

2010

Bulletin of the Korean Chemical Society

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A label-free amperometric immunosensor has been proposed for the detection of myeloperoxidase (MPO) in human serum. To fabricate such an immunosensor, a composite film consisting of N,N-dimethylformamide (DMF), multiwall carbon nanotubes (MWCNTs) and 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMIMBF4) suspension was initially formed on a glassy carbon electrode (GCE). Then cerium dioxide (CeO2) dispersed by chitosan was coated on the GCE. After that, MPO antibodies (anti-MPO) were attached onto the nanoCeO2 surface. With a noncompetitive immunoassay format, the antibody-antigen complex formed between the immobilized anti-MPO and MPO in sample solution. The immunosensor was characterized by cyclic voltammetry, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The factors influencing the performance of the immunosensor were studied in detail. Under optimal conditions, the current change before and after the immunoreaction was proportional to MPO concentration in the range of 5 to 300 ng mL -1 with a detection limit of 0.2 ng mL -1.

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A catalytic activity of a mercury electrode towards dioxygen reduction in room-temperature ionic liquids

Cited by 39 publications

References 24 publications

Roles of ion pairing on electroreduction of carbon dioxide based on imidazolium-based salts

Roles of ion pairing on electroreduction of carbon dioxide based on imidazolium-based salts

Ionic liquid and nanogold-modified immunosensing interface for electrochemical immunoassay of hepatitis B surface antigen in human serum

Amperometric Immunosensor for Myeloperoxidase in Human Serum Based on a Multi-wall Carbon Nanotubes-Ionic Liquid-Cerium Dioxide Film-modified Electrode

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