The role of copper nanoparticles decorating polydopamine/graphene film as catalyst in the enhancement of uric acid sensing

Quan, Do Phuc; Thao, Bui Thi Phuong; Trang, Nguyễn Vân; Huy, Nguyen Le; Dũng, Nguyễn Quốc; Ahmed, Minhaz Uddin; Лам, Тран Дай

doi:10.1016/j.jelechem.2021.115322

Cited by 14 publications

(3 citation statements)

References 39 publications

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“…Further analysis reveals that the anode and cathode peak currents exhibit linear dependence on the square root of the scan rates, as illustrated in figures 2(c) and (e). This linearity suggests that the oxidation reaction at the electrode surface follows the diffusion current law, as expressed by the Randles-Sevcik equation (equation ( 2)) [24]:…”

Section: Cyclic Voltammetry (Cv) Characteristics Of the Electrodes In...mentioning

confidence: 96%

Straightforward method for the electrochemical identification of dopamine in the presence of uric acid and ascorbic acid

Dung,

Toan,

Chuyen

et al. 2024

Meas. Sci. Technol.

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A few-layer graphene/Pt (FGP) electrode and a novel electrochemical technique were used in determining dopamine and simultaneously detecting uric acid (UA), ascorbic acid (AA), and dopamine (DA) in a buffered phosphate-saline solution at pH 7.4. The FGP electrode effectively separated the oxidation peaks of UA, DA, and AA in the positive scan. Interestingly, during the negative scan, the FGP electrode selectively responded to DA while showing negligible response to UA and AA, thus allowing the accurate quantification of small amounts of DA in the presence of considerable UA and AA interferences. The sensors for AA, DA, and UA exhibited successful detection in the positive scan. The linear ranges were 10–1800 (AA), 1–300 (DA), and 5–800 (UA) µM, the sensitivity was 109.27 (AA), 754.19 (DA), and 493.03 (UA) µAcm–2mM–1, and the detection limits were 4.2 µM (AA), 0.42 µM (DA), and 2.2 µM (UA). Furthermore, DA quantification was achieved in the negative scan, demonstrating a linear range of 1–100 µM, sensitivity of 2235.7 µAcm–2mM–1, and detection limit of 0.14 µM. This study presents a novel and efficient electrochemical technique for the rapid and straightforward detection of dopamine.

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Section: Cyclic Voltammetry (Cv) Characteristics Of the Electrodes In...mentioning

confidence: 96%

Straightforward method for the electrochemical identification of dopamine in the presence of uric acid and ascorbic acid

Dung,

Toan,

Chuyen

et al. 2024

Meas. Sci. Technol.

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“…The corresponding linear relationships between peak current (I p ) and square root of scan rate (ν 1/2 ) were derived as I p (mA) = 0.04 ν 1/2 +0.006 and I p (mA) = 0.12 ν 1/2 +0.17, respectively. Based on the Randles-Sevcik equation below, the electroactive surface area of ZnO/CC and ZnO/CNTs/CC electrode was calculated [19]:…”

Section: Electrochemical Measurementmentioning

confidence: 99%

ZnO nanorods anchored on CNTs incorporating carbon cloth flexible electrode as a highly sensitive electrochemical sensor

Shi

Chen

et al. 2023

Nanotechnology

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Monitoring glucose, uric acid (UA) and hydrogen peroxide (H2O2) concentration has emerged as a critical health care issue to prevent acute complications and to minimize the hazard of long-term complications. In this paper, a novel non-enzyme electrochemical sensor was proposed with nanorod-like zinc oxide anchored on carbon nanotubes using direct precipitation method and then decorated on carbon cloth (ZnO/CNTs/CC). The ZnO/CNTs composite was characterized by X-ray photoelectron spectroscopy (XPS), Raman spectrum, TEM microscope and electrochemistry. Sensing of UA, glucose and H2O2 individually or simultaneously was done on ZnO/CNTs/CC electrode, and the superior performance lies in its wide linear range, low detection limit and high selectivity, which is attributed to the synergistic effect of (a) the good electrocatalytic activity of ZnO nanorods, and (b) the large surface area with high conductivity offered by CNTs. Moreover, the ZnO/CNTs/CC electrode was manifested nice reproducibility, stability and selectivity. Importantly, the developed sensor platform has been successfully applied to probe glucose, UA and H2O2 in human serum with satisfactory recoveries. Therefore, our proposed approach is simple in aspect of fabrication and operation, which provides a straightforward assay for reliable and cost-effective determination of glucose, UA and H2O2 in clinical diagnosis and biomedical applications.

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“…Among a wide variety of available electrocatalysts, Cu has attracted attention in electrochemical sensors because of its cost-effectiveness and good electrical conductivity. The electrocatalytic properties of Cu have been reported in the determination of vitamin B6 [22], dopamine [23,24], nitrate [25,26], nitrite [26,27], etc. The accurate detection of nitrite is one of the current concerns because it is widely used in the food industry (it can inhibit the growth of bacteria, keep the colors and enhance the flavors) [25 -27].…”

Section: Introductionmentioning

confidence: 99%

The role of copper decorating poly(1,8-diaminonaphthalene)/graphene electrodes as a catalyst in the determination of nitrite

Van

Thuy

Huy

et al. 2022

Vietnam J. Sci. Technol.

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. Electroactive poly(1,8-diaminonaphthalene) is known to have a high affinity for metal ions thanks to amine and imine groups in the polymer chain. However, electrochemical sensors based on pristine P(1,8-DAN) have a major drawback concerning its poor electrical conductivity. To solve this problem, recently P(1,8-DAN) has been modified with some advanced nanomaterials such as carbonaceous materials or different metallic elements. In this research, we reported the synthesis and electrochemical characterization of a poly(1,8-diaminonaphthalene)/graphene composite film capable of adsorbing Cu2+ ions towards the application of nitrite sensing. P(1,8-DAN) was directly electropolymerized on graphene-coated glassy carbon electrode by a potential cycling between –0.15 and +0.95 V (vs. SCE) at a scan rate of 0.05 V/s, in aqueous solution containing 1.0 M HClO4 and 1.0 mM monomer 1,8-DAN,. The adsorption of Cu2+ ions onto the P(1,8-DAN) thin film was caried out in 0.1 M Cu(NO3)2 solution at 80 oC, followed by electrochemically redution to metal Cu0 by applying -0.4 V. The obtained copper decorating poly(1,8-diaminonaphthalene)/graphene (Gr/P(1,8-DAN)-Cu) electrodes acted as a catalyst in the enhancement of electrochemical signal for the determination of nitrite. The linear voltammetric response to the nitrite concentration was observed by a square wave voltammetric technique in the range of 0.69 to 1.12 mM with a detection limit of 0.13 mM. The results open up the path for designing other nitrite sensing based on our novel approach.

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The role of copper nanoparticles decorating polydopamine/graphene film as catalyst in the enhancement of uric acid sensing

Cited by 14 publications

References 39 publications

Straightforward method for the electrochemical identification of dopamine in the presence of uric acid and ascorbic acid

Straightforward method for the electrochemical identification of dopamine in the presence of uric acid and ascorbic acid

ZnO nanorods anchored on CNTs incorporating carbon cloth flexible electrode as a highly sensitive electrochemical sensor

The role of copper decorating poly(1,8-diaminonaphthalene)/graphene electrodes as a catalyst in the determination of nitrite

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