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

2015 ◽  
Vol 4 (8) ◽  
pp. G5-G7 ◽  
Author(s):  
X. Zhou ◽  
W. Jing ◽  
Z. Zhuang ◽  
X. Zheng
Keyword(s):  
Gold Nanoparticles ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Alkaline Solution ◽  
Electrocatalytic Oxidation ◽  
In Situ Synthesis ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Oxidation Of Glucose

Electrocatalytic Oxidation of Nitrite on Poly-Thionine/gold Nanoparticles Composites Modified Glassy Carbon Electrode

2012 ◽  
Vol 512-515 ◽  
pp. 2295-2299
Author(s):  
Xue Ping Liu ◽  
Hai Yan Kang ◽  
Wei Hua Chang ◽  
Min Ma
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrocatalytic Oxidation ◽  
Influence Factors ◽  
High Sensitivity ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Oxidation Current

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.

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

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.

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

The Analyst ◽  
2018 ◽  
Vol 143 (1) ◽  
pp. 297-303 ◽  
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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