The effective determination of Cd(ii) and Pb(ii) simultaneously based on an aluminum silicon carbide-reduced graphene oxide nanocomposite electrode

The Analyst ◽  
2017 ◽  
Vol 142 (15) ◽  
pp. 2741-2747 ◽  
Author(s):  
Yale Wu ◽  
Tao Yang ◽  
Kuo-Chih Chou ◽  
Junhong Chen ◽  
Lei Su ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Glass Carbon Electrode ◽  
Reduced Graphene ◽  
Glass Carbon ◽  
Aluminum Silicon Carbide ◽  
First Time ◽  
Aluminum Silicon

A platform for the simultaneous determination of Cd(ii) and Pb(ii) in aqueous solution has been applied using an aluminum silicon carbide-reduced graphene oxide (Al4SiC4–RGO) nanocomposite modified glass carbon electrode (GCE) for the first time.

Peptide-inspired green synthesis of hedgehog-like CuO nanoclusters on reduced graphene oxide for non-enzymatic hydrogen peroxide sensor

2020 ◽  
Vol 13 (07) ◽  
pp. 2051047
Author(s):  
Qifang Zhang ◽  
Li Wang ◽  
Yuhai Wang ◽  
Zhuang Li
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Materials Science ◽  
Cupric Oxide ◽  
Covalent Modification ◽  
Glass Carbon Electrode ◽  
Nucleation Sites ◽  
Reduced Graphene ◽  
Glass Carbon

Bioinspired synthesis provides a potential green method for creating functional nanomaterials on graphene supports. In this study, we demonstrate the preparation of hedgehog-like cupric oxide nanoclusters (CuONCs) on peptide-modified reduced graphene oxide (RGO-Pep) nanohybrids through a solution-phase synthesis in which the bound peptide molecules (GNNQQNYEE) mediate the non-covalent modification of GO and provide the adsorption of Cu[Formula: see text] ions and the nucleation sites for the growth of CuONCs. The synthesized RGO-Pep-CuONCs hybrids were further utilized for the modification of a glass carbon electrode to fabricate a non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2). It was found that the fabricated H2O2 sensor exhibited good performances for sensing H2O2 with a detection limit of [Formula: see text]M and two wide linear detection ranges. In addition, this sensor revealed good selectivity and stability. It is expected that the strategies used in this study will be valuable to inspire the creation of various functional biomolecule- and graphene-based hybrid bionanomaterials for the applications in materials science, sensors, biomedical engineering, tissue engineering, nanotechnology, and other fields.

A Rapid, Green and Controllable Strategy to Fabricate Electrodeposition of Reduced Graphene Oxide Film as Sensing Materials for Determination of Taxifolin

NANO ◽  
2015 ◽  
Vol 10 (03) ◽  
pp. 1550044 ◽  
Author(s):  
Yanju Wu ◽  
Mingxiu Lv ◽  
Bei Li ◽  
Junda Ge ◽  
Lin Gao
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Colloidal Solution ◽  
Stripping Voltammetry ◽  
Reduction Peak ◽  
Oxidation Peak ◽  
Peak Separation ◽  
Reduced Graphene ◽  
First Time

The electrodeposition of a film of reduced graphene oxide (ERGO) with well-dispersed on a glassy carbon electrode (GCE) was achieved using cyclic voltammetry (CV) in a graphene oxide (GO) colloidal solution. Using square wave adsorptive stripping voltammetry (SWASV), the ERGO film was applied for the first time, in developing a high-sensitive electrochemical sensor for detection of taxifolin. Compared with bare GCE, the resulting electrodes (ERGO/GCE) exhibited excellent response toward the oxidation of taxifolin by significantly enhancing the oxidation peak currents and the decreased peak-to-peak separation. Under selected conditions, the reduction peak currents had linear relationship with taxifolin concentration in the range of 5.0 × 10-8 – 1.5 × 10-6 mol L-1, with detection limit of 4.0 × 10-9 mol L-1. Besides, the method was successfully applied to the quantitative determination of taxifolin in the Prince's-feather fruit with satisfactory results.

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.

scholarly journals Simultaneous Determination of Uric Acid and Xanthine Using a Poly(Methylene Blue) and Electrochemically Reduced Graphene Oxide Composite Film Modified Electrode

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Gen Liu ◽  
Wei Ma ◽  
Yan Luo ◽  
Deng-ming Sun ◽  
Shuang Shao
Keyword(s):  
Methylene Blue ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Composite Film ◽  
Simultaneous Determination ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

Poly(methylene blue) and electrochemically reduced graphene oxide composite film modified electrode (PMB-ERGO/GCE) was successfully fabricated by electropolymerization and was used for simultaneous determination of uric acid (UA) and xanthine (Xa). Based on the excellent electrocatalytic activity of PMB-ERGO/GCE, the electrochemical behaviors of UA and Xa were studied by cyclic voltammetry (CV) and square wave voltammetry (SWV). Two anodic sensitive peaks at 0.630 V (versus Ag/AgCl) for UA and 1.006 V (versus Ag/AgCl) for Xa were given by CV in pH 3.0 phosphate buffer. The calibration curves for UA and Xa were obtained in the range of 8.00 × 10−8~4.00 × 10−4 M and 1.00 × 10−7~4.00 × 10−4 M, respectively, by SWV. The detection limits for UA and Xa were3.00×10-8 M and5.00×10-8 M, respectively. Finally, the proposed method was applied to simultaneously determine UA and Xa in human urine with good selectivity and high sensitivity.

scholarly journals Paper-based potentiometric sensing devices modified with chemically reduced graphene oxide (CRGO) for trace level determination of pholcodine (opiate derivative drug)

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12227-12234
Author(s):  
Hisham S. M. Abd-Rabboh ◽  
Abd El-Galil E. Amr ◽  
Elsayed A. Elsayed ◽  
Ahmed Y. A. Sayed ◽  
Ayman H. Kamel
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cost Effective ◽  
Trace Level ◽  
Ion Sensing ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Trace Level Determination ◽  
Analytical Device

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized.

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