Construction of a novel electrochemical biosensor based on a mesoporous silica/oriented graphene oxide planar electrode for detecting hydrogen peroxide

2020 ◽  
Vol 12 (21) ◽  
pp. 2661-2667
Author(s):  
Kun-Chao Lu ◽  
Ji-Kui Wang ◽  
Dong-Hai Lin ◽  
Xue Chen ◽  
Shi-Yu Yin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Mesoporous Silica ◽  
Constant Magnetic Field ◽  
Electrochemical Biosensor ◽  
Screen Printed Electrode ◽  
Planar Electrode ◽  
Screen Printed

A constant magnetic field (CMF) was used to arrange the orientation of graphene oxide (GO) which was modified on a self-made screen-printed electrode.

scholarly journals Determination of Simvastatin by Voltammetry Method at Screen-Printed Electrode Modified by Graphene Oxide Nanosheets and Sodium Dodecyl Sulfate

2022 ◽  
Author(s):  
Abolfazl Darroudi ◽  
Saeid Nazari ◽  
Seyed Ali Marashi ◽  
Mahdi Karimi-Nazarabad
Keyword(s):  
Graphene Oxide ◽  
Sodium Dodecyl Sulfate ◽  
Limit Of Detection ◽  
Sodium Dodecyl ◽  
Screen Printed Electrode ◽  
Support Electrolyte ◽  
Limit Of Quantitation ◽  
Dodecyl Sulfate ◽  
Screen Printed

Abstract An accurate, rapid, simple, and novel technique was developed to determine simvastatin (SMV). In this research, a screen-printed electrode (SPE) was deposited with graphene oxide (GO) and sodium dodecyl sulfate (SDS), respectively. For the first time, the handmade modified SPE measured the SMV by differential pulse voltammetry (DPV) with high sensitivity and selectivity. The results of cyclic voltammetry indicated the oxidation irreversible process of SMV. Various parameters (pH, concentration, scan rate, support electrolyte) were performed to optimize the conditions for the determination of SMV. Under the optimum experiment condition of 0.1 M KNO3 as support electrolyte and pH 7.0, the linear range was achieved for SMV concentration from 1.8 to 36.6 µM with a limit of detection (LOD), and a limit of quantitation (LOQ) of 0.06 and 1.8 µM, respectively. The proposed method was successfully utilized to determine SMV in tablets and urine samples with a satisfactory recovery in the range of 96.2 to 103.3%.

Tin disulfide–graphene oxide-β-cyclodextrin mediated electro-oxidation of melatonin hormone: an efficient platform for electrochemical sensing

2020 ◽  
Vol 8 (33) ◽  
pp. 7539-7547
Author(s):  
Xinrui Liu ◽  
Rajalakshmi Sakthivel ◽  
Yu-Cheng Chen ◽  
Ning Chang ◽  
Udesh Dhawan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Electrochemical Detection ◽  
2D Materials ◽  
Electrochemical Sensing ◽  
Screen Printed Electrode ◽  
Tin Disulfide ◽  
Ternary Nanocomposite ◽  
Electro Oxidation ◽  
Screen Printed

We have developed an electrochemical sensor based on integrated 2D materials including SnS2, graphene oxide, and β-cyclodextrin forming a ternary nanocomposite decorated on a screen-printed electrode for the electrochemical detection of melatonin.

Effect of APTES Percentage towards Reduced Graphene Oxide Screen Printed Electrode Surface for Biosensor Application

2019 ◽  
Vol 19 ◽  
pp. 1183-1188
Author(s):  
Suhaili Sabdin ◽  
Mohd Azraie Mohd Azmi ◽  
Nurul Azurin Badruzaman ◽  
Fatihatul Zuriati Makmon ◽  
Azman Abd Aziz ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrode Surface ◽  
Screen Printed Electrode ◽  
Reduced Graphene ◽  
Biosensor Application ◽  
Screen Printed
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