Electrochemical and Electron Spectroscopic Studies of Highly Polished Glassy Carbon Electrodes

Kamau, Geoffrey N.; Willis, William S.; Rusling, James F.

doi:10.1021/ac50001a049

Cited by 227 publications

(135 citation statements)

References 43 publications

(50 reference statements)

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“…1 imply that the redox reaction of immo bilized GOx has a preference to the functional groups on the surface of electrode. It is known that the epHOPG contains a large number of carbon-oxygen functional groups (Armstrong et al, 1989;Kamau et al, 1985). These groups are created by rup turing the carbon-carbon bonds of the aromatic rings of the basal plane.…”

Section: Electrochemistry Of Gox/ephopg and Gox/bphopgmentioning

confidence: 99%

“…These groups are created by rup turing the carbon-carbon bonds of the aromatic rings of the basal plane. When the ruptured bonds are oxidized, carbon-oxygen functional groups such as the carboxylic and phenolic groups are formed (Armstrong et al, 1989;Kamau et al, 1985). These groups render hydrophilicity and ionic character to the edge plane, thus providing immobilization interaction.…”

Section: Electrochemistry Of Gox/ephopg and Gox/bphopgmentioning

confidence: 99%

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Preserved enzymatic activity of glucose oxidase immobilized on unmodified electrodes for glucose detection

Wang¹,

Thai²,

Yau³

2007

Biosensors and Bioelectronics

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Section: Electrochemistry Of Gox/ephopg and Gox/bphopgmentioning

confidence: 99%

Section: Electrochemistry Of Gox/ephopg and Gox/bphopgmentioning

confidence: 99%

Preserved enzymatic activity of glucose oxidase immobilized on unmodified electrodes for glucose detection

Wang¹,

Thai²,

Yau³

2007

Biosensors and Bioelectronics

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“…To our surprise, the SPCE-P prepared in g-Al 2 O 3 performs much better in catechol immobilization than that of the SPCE-P prepared in a a-Al 2 O 3 slurry. This is interesting since gAl 2 O 3 is regarded as a poorer catalyst than a-Al 2 O 3 and only a small amount of~1.21 % g-Al 2 O 3 was trapped on the SPCE-P [19]. Ultimately, since good hydrophilicity is required to integrate biological redox mediators, the asprepared SPCE-P is thus very suitable for bioapplications.…”

Section: Resultsmentioning

confidence: 99%

A Simple Method to Tune Up Screen‐Printed Carbon Electrodes Applicable to the Design of Disposable Electrochemical Sensors

Tai

Zen

2013

Electroanalysis

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We report an easy method to tune up screen-printed carbon electrodes (SPCEs) for application in fabricating disposable electrochemical sensors. Simply by ultrasonic polishing a bare SPCE in a g-Al 2 O 3 slurry, the surface roughness was drastically smoothed coupled with a large increase in hydrophilicity. The as-generated micromorphology on the surface of the SPCE was found to be ideal for the immobilization of catechol to minimize the overpotential in the sensitive detection of nicotinamide adenine dinucleotide (NADH) and hydrazine. Physical characterization by both XPS and AFM studies specify that the adsorption behavior is related to the carbon surface functionalities and the trapping of g-Al 2 O 3 on the polished-SPCE.

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“…Voltammograms (a) and (b) were obtained for the carbonated and the lactic acid drink, respectively. Curves, (1), (2) and (3) can be seen in this figure, the oxidation waves II hardly appear at the polished electrode. In particular, a small addition of the lactic acid drink totally prevented the appearance of oxidation wave II (the curves (b)-(2) and (3) at the polished Pt electrode).…”

mentioning

confidence: 78%

Activation Effects of a Platinum Electrode by Laser Pulse Irradiation on the Electro-Oxidation of Glucose in Alkaline Solution

et al. 2004

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In order to demonstrate the activation effects of a Pt electrode by laser pulse irradiation, the electro-oxidation of glucose was tested at an activated Pt electrode by cyclic voltammetry. A fixed potential was applied to the electrode, and then the electrode was irradiated with laser pulses from a Nd:YAG laser at 20 Hz for 20 s. Activation by the laser pulse irradiation gave two remarkable effects on cyclic voltammograms from the electro-oxidation of glucose in a 0.1 mol dm -3 NaOH solution, i.e., surface modulation and cleaning effects. Significant differences were found in the cyclic voltammograms at the activated and at the simply polished electrodes. Such differences in the oxidation waves are attributed to a crystallographic change of the electrode surface induced by a laser ablation, accompanied by laser pulse irradiation. Due to the cleaning effect, the activated Pt electrode gave a sharp oxidation wave at -0.3 V even in real samples containing various organic compounds that could foul the electrode, though the activated Pt electrode lacked selectivity to the electro-oxidation of glucose.

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Electrochemical and Electron Spectroscopic Studies of Highly Polished Glassy Carbon Electrodes

Cited by 227 publications

References 43 publications

Preserved enzymatic activity of glucose oxidase immobilized on unmodified electrodes for glucose detection

Preserved enzymatic activity of glucose oxidase immobilized on unmodified electrodes for glucose detection

A Simple Method to Tune Up Screen‐Printed Carbon Electrodes Applicable to the Design of Disposable Electrochemical Sensors

Activation Effects of a Platinum Electrode by Laser Pulse Irradiation on the Electro-Oxidation of Glucose in Alkaline Solution

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