Constant potential amperometric detection of carbohydrates at a copper-based chemically modified electrode

Prabhu, Sunil; Baldwin, Richard P.

doi:10.1021/ac00183a014

Cited by 172 publications

(81 citation statements)

References 35 publications

(26 reference statements)

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“…In fact, no change in the peak currents for all the sugars examined was observed upon continuous cycling for over 80 scans. Baldwin et al have also reported such a phenomenon [23]. Similar to all other metallic and modi®ed carbon electrodes for the determination of carbohydrates, the electrocatalytic response is observed only in strongly basic solution [10,11,24].…”

Section: Electrochemistrymentioning

confidence: 65%

Amperometric Detection of Carbohydrates by Capillary Electrophoresis with a Cuprous Oxide Modified Sol-Gel Carbon Composite Electrode

et al. 2000

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A new sensitive electrochemical detector has been developed for the amperometric detection in capillary electrophoresis (CE). Chemically modi®ed sol-gel carbon composite electrodes (CCEs) containing cuprous oxide exhibit a sensitive electrocatalytic response for the oxidation of carbohydrates. The electrochemical pretreatment at 1.80 V (vs. SCE) for 60 s results in a marked enhancement of the current responses for all sugars examined, compared to the untreated electrode. A sample mixture containing 8 different sugars was separated within 30 min at an optimal constant potential of 0.65 V (vs. SCE). The stability of an electrochemically preanodized Cu 2 O-CCE was also investigated in CE experiments. The peak current reproducibility with this preanodized electrode over a period of 10 h was within 5 %. Calibration was linear over the concentration range from 2 to 400 mM with the limits of detection for the carbohydrates studied in the range of 0.75±1.3 mM.

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Section: Electrochemistrymentioning

confidence: 65%

Amperometric Detection of Carbohydrates by Capillary Electrophoresis with a Cuprous Oxide Modified Sol-Gel Carbon Composite Electrode

et al. 2000

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“…and cyclohexanol is oxidized on the modified surface via the following reaction: (4) where the intermediate in the product is oxidized strongly through a similar electrooxidation process:…”

Section: Resultsmentioning

confidence: 99%

“…Copper electrode is the most active and the most often used for electrocatalysts. [4][5][6][7][8][9][10][11][12] The literature on electrochemical oxidation of alcohols can roughly be grouped into three sets: fuel cells, hydrogenous and homogenous catalysis. [13][14][15][16] The inorganic community's investigation of the electrooxidation of alcohols primarily consisted of homogenous systems.…”

Section: Introductionmentioning

confidence: 99%

Electro-oxidation of Cyclohexanol on a Copper Electrode Modified by Copper-dimethylglyoxime Complex Formed by Electrochemical Synthesis

Hasanzadeh¹,

Shadjou²,

Saghatforoush³

et al. 2009

Bulletin of the Korean Chemical Society

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Copper-dimethylglyoxime complex (CuDMG) modified Copper electrode (Cu/CuDMG) showed a catalytic activity towards cyclohexanol oxidation in NaOH solution. The modified electrode prepared by the dimethylglyoxime anodic deposition on Cu electrode in the solution contained 0.20 M NH4Cl + NH4OH (pH 9.50) and 1 × 10 -4 M dimethylglyoxime. The modified electrode conditioned by potential recycling in a potential range of -900 ~ 900 mV vs. Ag/AgCl by cyclic voltammetry in alkaline medium (1 M NaOH). The results show that the CuDMG film on the electrode behaves as an efficient catalyst for the electro-oxidation of cyclohexanol in alkaline medium via Cu (III) species formed on the electrode.

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“…Note that the obtained results were comparable to those from a previous FIA study using a Cubased electrode. 34 Furthermore, since the polyoxymethylene (acetal) material is highly stable in common organic solvents like methanol, ethanol, and acetonitrile, the cell can be operated not only in strong alkaline solution but also in organic solvents.…”

Section: Resultsmentioning

confidence: 99%

An Electrochemical Cell Coupled with Disposable Screen-Printed Electrodes for Use in Flow Injection Analysis

Hsu

Chung

Lyuu³

et al. 2006

ANAL. SCI.

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Constant potential amperometric detection of carbohydrates at a copper-based chemically modified electrode

Cited by 172 publications

References 35 publications

Amperometric Detection of Carbohydrates by Capillary Electrophoresis with a Cuprous Oxide Modified Sol-Gel Carbon Composite Electrode

Amperometric Detection of Carbohydrates by Capillary Electrophoresis with a Cuprous Oxide Modified Sol-Gel Carbon Composite Electrode

Electro-oxidation of Cyclohexanol on a Copper Electrode Modified by Copper-dimethylglyoxime Complex Formed by Electrochemical Synthesis

An Electrochemical Cell Coupled with Disposable Screen-Printed Electrodes for Use in Flow Injection Analysis

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