Simultaneous Electrochemical Detection of Ascorbic Acid, Dopamine and Uric Acid Using the Composite Materials of Fe3O4 and Nitrogen Self-Doped Sunflower Plate-Derived Carbon

NANO ◽  
2021 ◽  
Author(s):  
Panpan Gao ◽  
Yaqi Huang ◽  
Yaoyao Zhang ◽  
Qiaoqian Sun ◽  
Shaojie Ruan ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Composite Materials ◽  
Electrochemical Sensors ◽  
Differential Pulse ◽  
Research Direction ◽  
Electrochemical Sensing ◽  
Normal Human ◽  
Target Molecules ◽  
New Research

A simple pyrolysis, activation and hydrothermal method was utilized to synthesize composite materials (Fe3O4/SFP) of ferroferric oxide and nitrogen self-doped sunflower plate-derived carbon for the simultaneous electrochemical sensing of ascorbic acid (AA), dopamine (DA) and uric acid (UA). The Fe3O4/SFP had synergistic catalytic effect on target molecules, and the oxidation peak potential of AA, DA and UA was well distinguished in the differential pulse voltammetry determination. Under the optimal conditions, the linear response ranges of AA, DA and UA are 3–150[Formula: see text][Formula: see text]M, 5–450[Formula: see text][Formula: see text]M and 15–1200[Formula: see text][Formula: see text]M, respectively. The detection limits of AA, DA and UA ([Formula: see text]/[Formula: see text]) are 1.0[Formula: see text][Formula: see text]M, 0.4[Formula: see text][Formula: see text]M and 1.48[Formula: see text][Formula: see text]M, respectively, and the sensitivity is 1.87[Formula: see text][Formula: see text] (3–20[Formula: see text][Formula: see text]M) and 0.64[Formula: see text][Formula: see text] (20–150[Formula: see text][Formula: see text]M) for AA, 3.90[Formula: see text][Formula: see text] (5–20[Formula: see text][Formula: see text]M) and 1.21[Formula: see text][Formula: see text] (20–450[Formula: see text][Formula: see text]M) for DA and 1.12[Formula: see text][Formula: see text] (15–100[Formula: see text][Formula: see text]M) and 0.31[Formula: see text][Formula: see text] (100–1200[Formula: see text][Formula: see text]M) for UA. In addition, satisfactory results have been obtained for the determination of AA, DA and UA in normal human serum, which provides a new research direction for the construction of electrochemical sensors in the future.

scholarly journals An Electrochemical Sensor Based on Gold Nanodendrite/Surfactant Modified Electrode for Bisphenol A Detection

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Nguyen Thi Lien ◽  
Le Quoc Hung ◽  
Nguyen Tien Hoang ◽  
Vu Thi Thu ◽  
Dau Thi Ngoc Nga ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Electrochemical Sensors ◽  
Differential Pulse ◽  
Electrochemical Sensing ◽  
Fluorescence Measurements ◽  
Sensing Platform ◽  
Electrochemical Window ◽  
Galvanostatic Deposition ◽  
Bisphenol A Detection ◽  
Good Agreement

In the present work, we reported the simple way to fabricate an electrochemical sensing platform to detect Bisphenol A (BPA) using galvanostatic deposition of Au on a glassy carbon electrode covered by cetyltrimethylammonium bromide (CTAB). This material (CTAB) enhances the sensitivity of electrochemical sensors with respect to the detection of BPA. The electrochemical response of the modified GCE to BPA was investigated by cyclic voltammetry and differential pulse voltammetry. The results displayed a low detection limit (22 nm) and a linear range from 0.025 to 10 µm along side with high reproducibility (RSD = 4.9% for seven independent sensors). Importantly, the prepared sensors were selective enough against interferences with other pollutants in the same electrochemical window. Notably, the presented sensors have already proven their ability in detecting BPA in real plastic water drinking bottle samples with high accuracy (recovery range = 96.60%–102.82%) and it is in good agreement with fluorescence measurements.

Improved host–guest electrochemical sensing of dopamine in the presence of ascorbic and uric acids in a β-cyclodextrin/Nafion®/polymer nanocomposite

2014 ◽  
Vol 6 (15) ◽  
pp. 5962-5971 ◽  
Author(s):  
Nada F. Atta ◽  
Ahmed Galal ◽  
Shimaa M. Ali ◽  
Dalia M. El-Said
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Gold Electrode ◽  
Polymer Nanocomposite ◽  
Electrochemical Sensing ◽  
Voltammetric Method

A voltammetric method based on a combination of β-cyclodextrin, Nafion® and a gold electrode modified with poly(3,4-ethylene-dioxythiophene) has been successfully developed for the determination of dopamine in the presence of ascorbic acid or uric acid.

scholarly journals MESOPOROUS SILICA ELECTROCHEMICAL SENSORS FOR THE DETECTION OF ASCORBIC ACID AND URIC ACID

2016 ◽  
Vol 20 (2) ◽  
pp. 351-357
Author(s):  
Hashazirah Mohamad Hassan ◽  
Nurul Barakah Ab Rahman ◽  
Mohammad Noor Jalil
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Mesoporous Silica ◽  
Electrochemical Sensors

scholarly journals SIMULTANEOUS ELECTROCHEMICAL DETECTION OF ASCORBIC ACID, DOPAMINE, AND URIC ACID AT MAGNETIC NANOPARTICLES/REDUCED GRAPHENE OXIDE MODIFIED ELECTRODE

2021 ◽  
Vol 83 (3) ◽  
pp. 85-92
Author(s):  
Azleen Rashidah Mohd Rosli ◽  
Farhanini Yusoff ◽  
Saw Hong Loh ◽  
Hanis Mohd Yusoff ◽  
Muhammad Mahadi Abdul Jamil ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Magnetic Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Limit Of Detection ◽  
Simultaneous Detection ◽  
Differential Pulse ◽  
Reduced Graphene

A magnetic nanoparticles/reduced graphene oxide modified glassy carbon electrode (MNP/rGO/GCE) was fabricated via one-step facile synthesis route for the simultaneous determination of ascorbic acid (AA), dopamine (DA), along with uric acid (UA). A series of diseases and disorders has been associated with irregular levels of these respective analytes, thus early detection is highly crucial. Physical and electrochemical characterization of the modified electrode was conducted by using Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) analysis, X-Ray Diffraction (XRD) analysis and Brauneur-Emmet-Teller (BET), Cyclic Voltammetry (CV) and Electron Impedance Spectroscopy (EIS). The results obtained confirmed the formation of MNP/rGO composite. Differential pulse voltammetry (DPV) of MNP/rGO/GCE displays three well-defined peaks which associated to AA, DA and UA, respectively. The response towards DA is linear in the concentration range of 15 nM to 100 µM with a detection limit of 0.19 nM while a response to AA and UA is also linear in the concentration range of 10 µM to 100 µM with a limit of detection 0.22 µM and 45 nM respectively. The proposed modified electrode offers a good response towards simultaneous detection of three different electroactive species with excellent electron transfer rate, great capacitance and ideal diffusive control behavior.

Highly Selective Electrochemical Sensing of Dopamine, Xanthine, Ascorbic Acid and Uric Acid Using a Carbon Fiber Paper

2020 ◽  
Vol 20 (19) ◽  
pp. 11707-11712
Author(s):  
Jaligam Murali Mohan ◽  
Khairunnisa Amreen ◽  
Arshad Javed ◽  
Satish Kumar Dubey ◽  
Sanket Goel
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Carbon Fiber ◽  
Electrochemical Sensing ◽  
Carbon Fiber Paper
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