Application of Electrochemically Reduced Graphene Oxide on Screen-Printed Ion-Selective Electrode

2012 ◽  
Vol 84 (7) ◽  
pp. 3473-3479 ◽  
Author(s):  
Jianfeng Ping ◽  
Yixian Wang ◽  
Yibin Ying ◽  
Jian Wu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Screen Printed

scholarly journals Amperometric L-Lactate Biosensor Based upon a Gold Nanoparticles/Reduced Graphene Oxide/Polyallylamine Hydrochloride Modified Screen-Printed Graphite Electrode

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 74
Author(s):  
Oana-Maria Istrate ◽  
Lucian Rotariu ◽  
Camelia Bala
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Lactic Acid ◽  
Reduced Graphene Oxide ◽  
Long Term Stability ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Dehydrogenase Enzyme ◽  
Polyallylamine Hydrochloride ◽  
Screen Printed

This work describes a novel L-lactate biosensor based on the immobilization of L-lactate dehydrogenase enzyme on the screen-printed electrode modified with a ternary composite based on gold nanoparticles, electrochemically-reduced graphene oxide, and poly (allylamine hydrochloride). The enzyme was stabilized by crosslinking with glutaraldehyde. Applied working potential, pH and NAD+ concentration were optimized. The biosensor reports a specific sensitivity of 1.08 µA/mM·cm2 in a range up to 3 mM L-lactic acid with a detection limit of 1 µM. The operational and long-term stability as well as good selectivity allowed the L-lactic acid measurement in dairy products and wine samples.

Electrochemically Reduced Graphene Oxide as Screen‐printed Electrode Modifier for Fenamiphos Determination

2020 ◽  
Vol 32 (8) ◽  
pp. 1689-1695
Author(s):  
A. Gevaerd ◽  
E. Y. Watanabe ◽  
K. Fernandes ◽  
M. A. P. Papi ◽  
C. E. Banks ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Screen Printed Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Screen Printed

scholarly journals Electrochemically Reduced Graphene Oxide-Based Screen-Printed Electrodes for Total Tetracycline Determination by Adsorptive Transfer Stripping Differential Pulse Voltammetry

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 76 ◽  
Author(s):  
Anabela S. Lorenzetti ◽  
Tania Sierra ◽  
Claudia E. Domini ◽  
Adriana G. Lista ◽  
Agustin G. Crevillen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Differential Pulse Voltammetry ◽  
Reduced Graphene Oxide ◽  
Selective Adsorption ◽  
Differential Pulse ◽  
Screen Printed Electrodes ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide ◽  
Pulse Voltammetry ◽  
Screen Printed

Disposable electrochemically reduced graphene oxide-based (ERGO) screen-printed electrodes (SPE) were developed for the determination of total tetracyclines as a sample screening approach. To this end, a selective adsorption-detection approach relied on adsorptive transfer stripping differential pulse voltammetry (AdTDPV) was devised, where the high adsorption capacity and the electrochemical properties of ERGO were simultaneously exploited. The approach was very simple, fast (6 min.), highly selective by combining the adsorptive and the electrochemical features of tetracyclines, and it used just 10 μL of the sample. The electrochemical sensor applicability was demonstrated in the analysis of environmental and food samples. The not-fully explored AdTDPV analytical possibilities on disposable nanostructured transducers become a new tool in food and environmental fields; drawing new horizons for “in-situ” analysis.

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