Results 151 to 160 of about 43,372 (204)

Comparative investigation on electrochemical behavior of hydroquinone at carbon ionic liquid electrode, ionic liquid modified carbon paste electrode and carbon paste electrode

Electrochimica Acta, 2007
Ionic liquid, 1-heptyl-3-methylimidazolium hexafluorophosphate (HMIMPF6), has been used to fabricate two new electrodes, carbon ionic liquid electrode (CILE) and ionic liquid modified carbon paste electrode (IL/CPE), using graphite powder mixed with HMIMPF6 or the mixture of HMIMPF6/paraffin liquid as the binder, respectively.
Ya Zhang, Jian Bin Zheng
openaire   +3 more sources

Activated carbon paste electrodes for biosensors

Analytical Chemistry, 1994
A reagentless amperometric glucose biosensor was constructed using glucose oxidase and hydroquinone (H2Q) coimmobilized in carbon paste. The sensor response was studied by amperometry and cyclic voltammetry in quiescent solutions, as well as in a flow injection apparatus.
N, Motta, A R, Guadalupe
openaire   +2 more sources

Metalloporphyrin containing carbon paste electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1985
Abstract Iron and manganese tetraphenylporphyrin chlorides can be dissolved in 1-nonanol and mixed into a carbon paste electrode which in aqueous buffer exhibits the classic metal(III/II) cyclic voltammetry. The voltammetric formal potential shifts negatively by 60 mV/pH unit, and enhanced, electrocatalytic currents are observed in the presence of ...
Esther S. Takeuchi, Royce W. Murray
openaire   +1 more source

Metal-dispersed carbon paste electrodes

Analytical Chemistry, 1992
The preparation of metal-dispersed carbon paste electrodes, based on mixing an organic binder with metalized graphite, is described. Such electrodes combine the efficient electrocatalytic activity of metal microparticles with the attractive properties of carbon paste matrices.
Joseph. Wang, Najih. Naser, Lucio. Angnes, Hui. Wu, Liang. Chen   +4 more
openaire   +1 more source

Acid Stability of Carbon Paste Enzyme Electrodes

Analytical Chemistry, 2006
This note reports on the unusual protection of several enzymes against harsh pH conditions provided by carbon paste electrodes. Both glucose oxidase and polyphenol oxidase carbon paste amperometric biosensors display a remarkable resistance to acid deactivation compared to conventional biosensors prepared by electropolymeric entrapment of enzymes.
Joseph, Wang, Mustafa, Musameh, Jian-Wei, Mo   +2 more
openaire   +2 more sources

Carbon-Filled Polymer Paste Reference Electrodes

Analytical Letters, 1985
Abstract Inexpensive, disposable, carbon-filled polymer paste reference electrodes are reported. These electrodes are designed for use in conjuction with carbon-filled polymer paste ion-selective probes reported earlier. Attachment of integrated electronics is easily achieved.
P. J. Shoubridge, M. R. Haskard, D. E. Mulcahy   +2 more
openaire   +1 more source

Voltammetric studies on carbon paste electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984
ABstract The relative importance of the carbon and the pasting liquid on the properties of the carbon paste electrode was studied using cyclic potential sweep voltammetry. The effect on electrode capacity and kinetics for the systems hexacyanoferrate (II) and hydroquinone in phosphate buffer of pH 6.8 was compared.
Csaba Urbaniczky, Kent Lundström
openaire   +1 more source

Zeolite-modified solid carbon paste electrodes

Journal of Solid State Electrochemistry, 2003
New zeolite-modified carbon-based electrodes are described. They are based either on the physical anchoring of zeolite particles on the surface of solid carbon paste (the viscosity of which can be tuned by temperature change or controlled dissolution by an organic solvent), or on the dispersion of zeolite particles in the bulk of a carbon paste matrix ...
Walcarius, Alain, Mariaulle, Pascal, Lamberts, Luc   +2 more
openaire   +3 more sources

Iridium‐dispersed carbon paste enzyme electrodes

Electroanalysis, 1996
AbstractAn highly selective first‐generation glucose biosensor, based on an iridium‐dispersed carbon‐paste transducer, is described. The iridium‐on‐carbon particles provide excellent electrocatalysis for both the reduction and oxidation of hydrogen peroxide.
Joseph Wang, Gustavo Rivas, Manuel Chicharro   +2 more
openaire   +1 more source