In Situ Synthesis of Gold Nanoparticles on Poly (L-arginine) Modified Glassy Carbon Electrode and Electrocatalytic Oxidation of Glucose in Alkaline Solution

This paper describes the electrocatalytic oxidation of nitrite by poly-thionine /gold nanoparticle modified glassy carbon electrode. Due to the synergistic effect of poly-thionine and gold nanoparticle, the modied electrodes could oxide nitrite with enhanced oxidation current and a decrease in the required overpotential compared with bare electrode without poly-thionine and gold nanoparticles layer coated. The influence factors for nitrite assay such as polymer film thickness, adsorption time of gold nanoparticles onto the poly-thionine film, different buffers and pH，interferent ions were discussed elaborately. Under the optimal conditions, the oxidation current signal was proportional to the concentration of nitrite from 3.0×10-6 to 1.0×10-3 mol/L with a detection limit of 1.0×10-6 mol/L. The proposed method has been applied to determine nitrite concentration in real samples and the results were satisfactory. The poly-thionine/gold nanoparticles composites modied electrode has been proved to possess high sensitivity, good storage stability, reproducibility and anti-interference ability.

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Electrocatalytic Oxidation of Formaldehyde on Nickel-Poly(o-Toluidine)-Polyvinylalcohol Modified Glassy Carbon Electrode

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.543-547.3798 ◽

2014 ◽

Vol 543-547 ◽

pp. 3798-3801

Author(s):

Yu Xia Liu

Keyword(s):

Glassy Carbon Electrode ◽

Glassy Carbon ◽

Electrocatalytic Oxidation ◽

Alkaline Media ◽

Carbon Electrode ◽

Formaldehyde Concentration ◽

Nickel Sulphate ◽

Modified Glassy Carbon Electrode ◽

Polymeric Layer

The electrocatalytic oxidation of formaldehyde on Nickel-Poly (o-toluidine) - polyvinylalcohol modified glassy carbon electrode (Ni-P(OT)-PVA/GCE) was developed. This involves in situ electropolymerization of o-toluidine at GCE, which is following to the incorporation of Ni (II) to polymeric layer by immersion of modified electrode in 1.0 M nickel sulphate solution. The general electrochemical behavior was characterized by cyclic voltammetry and chronoamperometry methods in alkaline media. The results showed that the Ni-P(OT)-PVA/GCE system exhibits a significant electrocatalytic activity towards oxidation of formaldehyde. The effects of scan rate and formaldehyde concentration on the electrocatalytic oxidation of formaldehyde were also investigated at the surface of Ni-P(OT)-PVA/GCE.

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Zn-mesoporous metal-organic framework incorporated with copper ions modified glassy carbon electrode: Electrocatalytic oxidation and determination of amoxicillin

Microchemical Journal ◽

10.1016/j.microc.2021.106011 ◽

2021 ◽

Vol 164 ◽

pp. 106011

Author(s):

Biuck Habibi ◽

Ali Pashazadeh ◽

Lotf Ali Saghatforoush

Keyword(s):

Glassy Carbon Electrode ◽

Glassy Carbon ◽

Electrocatalytic Oxidation ◽

Copper Ions ◽

Metal Organic Framework ◽

Carbon Electrode ◽

Modified Glassy Carbon Electrode ◽

Metal Organic ◽

Mesoporous Metal

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Highly sensitive detection of hesperidin using AuNPs/rGO modified glassy carbon electrode

The Analyst ◽

10.1039/c7an01706e ◽

2018 ◽

Vol 143 (1) ◽

pp. 297-303 ◽

Cited By ~ 9

Author(s):

Yang Gao ◽

Xiufeng Wu ◽

Hui Wang ◽

Wenbo Lu ◽

Mandong Guo

Keyword(s):

Gold Nanoparticles ◽

Graphene Oxide ◽

Electrochemical Sensor ◽

Glassy Carbon Electrode ◽

Glassy Carbon ◽

Carbon Electrode ◽

Modified Glassy Carbon Electrode ◽

Reduced Graphene ◽

Highly Sensitive ◽

Highly Sensitive Detection

The highly sensitive and selective electrochemical sensor of hesperidin based on gold nanoparticles (AuNPs) and reduced graphene oxide (rGO) modified glassy carbon electrode (GCE) is reported.

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