Graphene Oxide Modified Carbon Paste Electrode for Handy and Ultra‐sensitive Determination of Epinephrine in the Presence of Uric and Ascorbic Acids

2020 ◽  
Vol 32 (11) ◽  
pp. 2463-2473
Author(s):  
Teena Joseph ◽  
Tony Thomas ◽  
Nygil Thomas
Keyword(s):  
Graphene Oxide ◽  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Sensitive Determination ◽  
Ascorbic Acids ◽  
Paste Electrode

A novel sensor for sensitive determination of atropine based on a Co3O4-reduced graphene oxide modified carbon paste electrode

2015 ◽  
Vol 39 (5) ◽  
pp. 3875-3881 ◽  
Author(s):  
Hasan Bagheri ◽  
Seyedeh Maryam Arab ◽  
Hosein Khoshsafar ◽  
Abbas Afkhami
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Carbon Paste Electrode ◽  
Electrochemical Determination ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Reduced Graphene ◽  
Sensitive Determination ◽  
Paste Electrode

Co3O4-reduced graphene oxide acted as a selective and sensitive modifier in a sensing layer for electrochemical determination of atropine.

Kaolinite Modified Carbon Paste Electrode for the Sensitive Determination of Captopril

2017 ◽  
Vol 15 (4) ◽  
pp. 371-374 ◽  
Author(s):  
Saeed Ahmed Lakho ◽  
Sarfaraz Ahmed Mahesar ◽  
Abdul Rauf Khaskheli ◽  
Sirajuddin ◽  
Syed Tufail Hussain Sherazi ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Sensitive Determination ◽  
Paste Electrode

Sensitive Electrochemical Determination of Hyperin Based on Electrochemically Activated ZrO2 Nanoparticles-Modified Carbon Paste Electrode

NANO ◽  
2019 ◽  
Vol 14 (05) ◽  
pp. 1950052 ◽  
Author(s):  
Na Wang ◽  
Jianyao Kou ◽  
Lijie Wang ◽  
Fei Wang ◽  
Kui Lu
Keyword(s):  
Carbon Paste Electrode ◽  
Electrochemical Treatment ◽  
Electrochemical Determination ◽  
Zro2 Nanoparticles ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
X Ray Diffraction ◽  
Sensitive Determination ◽  
Paste Electrode

A novel electrochemically activated ZrO2 nanoparticles modified carbon paste electrode (CPE) (ZrO2-CPE(ox)) was prepared and applied for selective and sensitive determination of hyperin. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra and electrochemical experiment were used to characterize the ZrO2 nanoparticles and investigate the electrochemical performance of the ZrO2-CPE(ox). Compared with bare CPE and electrochemically activated CPE (CPE(ox)), the ZrO2-CPE(ox) got more reactive sites by electrochemical treatment and exhibited larger effective surface area and more excellent electrochemical catalytic activity toward the redox of hyperin. Under the optimum conditions, the oxidation peak currents showed a linear relationship with the concentrations of hyperin in the range of [Formula: see text]–[Formula: see text][Formula: see text]mol[Formula: see text]L[Formula: see text] and [Formula: see text]–[Formula: see text][Formula: see text]mol[Formula: see text]L[Formula: see text], and a low detection limit of [Formula: see text][Formula: see text]mol[Formula: see text]L[Formula: see text] was achieved for hyperin. Moreover, the proposed method exhibited an excellent selectivity, stability, reproducibility and repeatability, which make it very suitable for a potential choice for determining the concentrations of hyperin in drug matrices.

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