Novel Acetylcholinesterase Biosensor for Detection of Paraoxon Based on Holey Graphene Oxide Modified Glass Carbon Electrode

2018 ◽  
Vol 30 (10) ◽  
pp. 2258-2264 ◽  
Author(s):  
Yan Ping Li ◽  
Rui Xia Zhao ◽  
Gao Yi Han ◽  
Yao Ming Xiao
Keyword(s):  
Graphene Oxide ◽  
Carbon Electrode ◽  
Glass Carbon Electrode ◽  
Glass Carbon

Electrochemical Synthesis of Platinum-Reduced Graphene Oxide Hybrids for Methanol Oxidation

2013 ◽  
Vol 709 ◽  
pp. 58-61
Author(s):  
Guo Yu Shi ◽  
Jian Fei Xia ◽  
Zong Hua Wang ◽  
Yan Zhi Xia ◽  
Fei Fei Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Methanol Oxidation ◽  
Carbon Electrode ◽  
Glass Carbon Electrode ◽  
Supported Platinum ◽  
Reduced Graphene ◽  
Platinum Electrocatalyst ◽  
Glass Carbon ◽  
Supporting Materials

Reduced graphene oxide (RGO) supported platinum electrocatalyst was successfully synthesized on the glass carbon electrode by the electrodeposition method. Cyclic voltammetry (CV) and amperometry were used to evaluate the catalytic activity of the Pt/RGO modified electrode towards methanol oxidation. The results revealed that the as-prepared catalyst exhibited high electrocatalytic ability in methanol oxidation, which could be attributed to the excellent properties of the reduced graphene oxide as supporting materials.

Molybdenum Trioxide Dihydrate-Graphene Composite for Electrochemical Detection of Thiourea Molecule

NANO ◽  
2016 ◽  
Vol 11 (03) ◽  
pp. 1650036 ◽  
Author(s):  
Xinmeng Zhang ◽  
Kezhi Li ◽  
Hejun Li ◽  
Jinhua Lu ◽  
Leilei Zhang
Keyword(s):  
Electrochemical Sensor ◽  
Modified Electrode ◽  
Molybdenum Trioxide ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
X Ray ◽  
Glass Carbon Electrode ◽  
Graphene Composite ◽  
Relative Standard ◽  
Glass Carbon

A novel electrochemical sensing platform was constructed based on a facile self-assembly procedure synthetic laminar molybdenum trioxide dihydrate (MoO[Formula: see text]H2O)-graphene composite. Field emission scanning electron microscopy (FESEM), X-ray spectroscopy, X-ray diffraction (XRD) and Raman spectroscopy were employed to characterize the morphology and composition of the MoO[Formula: see text]H2O-graphene composite. As a model molecule, thiourea was utilized to investigate the electrochemical behaviors of the MoO[Formula: see text]H2O-graphene composite modified glass carbon electrode. The results show that the composite modified electrode has higher electron transfer rate than that of graphene modified electrode and bare glass carbon electrode meanwhile the peak currents of it has a good linear relationship with thiourea concentrations in the range of [Formula: see text] ([Formula: see text]) with detection limit of 4.99[Formula: see text][Formula: see text]M ([Formula: see text]). This novel electrochemical sensor exhibits a higher absorption capacity ([Formula: see text][Formula: see text]mol/cm2), a good reproducibility (1.41% relative standard deviation (RSD)), excellent anti-interference and a high stability. These excellent electrochemical properties of the MoO[Formula: see text]H2O-graphene composite are attributed to the loose and porous structure and the synergistic effects between graphene and MoO[Formula: see text]H2O, which make this composite material hold great potential applications for electrochemical sensor.

Electrochemical Behaviour for Europium Doped Tantalum Oxide Coated Glass Carbon Electrode

2012 ◽  
Vol 518-523 ◽  
pp. 860-863
Author(s):  
Yan Hong Zhao ◽  
Chun Mei Zhang ◽  
Ting Liu ◽  
Qiang Qiang Du ◽  
Sheng Liang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electrochemical Reaction ◽  
Electrochemical Behaviour ◽  
Tantalum Oxide ◽  
Carbon Electrode ◽  
Film Electrode ◽  
Glass Carbon Electrode ◽  
Ta2o5 Film ◽  
Glass Carbon ◽  
Potential Applications

Europium doped tantalum oxide (europium-Ta2O5) particles were synthesized with a low temperature hydrothermal method. The electrochemical behaviour of an europium-Ta2O5 film electrode in 0.1 mol dm-3KCl solution containing 5 mmol dm-3K3Fe(CN)6was investigated using cyclic voltgrammetry (CV). The CV results indicated that the europium-Ta2O5film electrode exhibited good stable and reversible electrochemistry properties. The electrochemical reaction of K3Fe(CN)6was a diffusion-controlling process on the europium-Ta2O5film electrode. The europium-Ta2O5particles might have potential applications in electrochemical fields.

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