Laser-induced graphene electrodes on polyimide membranes modified with gold nanoparticles for the simultaneous detection of dopamine and uric acid in human serum

Ouedraogo, Bibata; Baachaoui, Sabrine; Tall, Amidou; Tapsoba, Issa; Raouafi, Noureddine

doi:10.1007/s00604-023-05909-6

Cited by 10 publications

(3 citation statements)

References 52 publications

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“…However, the accurate measurement of DA is challenging because of the small amount of DA and interference from UA and AA, which sandwich the DA peak [13]. The potential of these peaks depends solely on their electrochemical nature, so researchers have tried to improve the separation of characteristic peaks by enhancing their sharpness and intensity [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Various nanostructured electrode materials have been developed to enhance the sensitivity and selectivity of sensors and improve their electrochemical properties and specificity [16][17][18][19]. For instance, Zhang et al [17] demonstrated the fabrication of Au-Pt bimetallic nanoparticles decorated on sulfonated nitrogen sulfur co-doped graphene for enhanced electrocatalytic activity in detecting UA and DA in real samples.…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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“…In contrast, electrochemical methods based on a disposable screen-printed carbon electrode (SPCE) offer an excellent alternative option for onsite pesticide detection owing to their rapid, low-cost, simple operation, versatility, and high sensitivity. − Meanwhile, the employment of different shapes of gold nanoparticles via nanospheres, − nanorods, − nanocubes, − nanostars, − nanocages, − nanotriangles, − nanohexagon, − and nanobipyramids − has been widely explored to enhance its sensitivity for the purpose of sensing applications. Among these various shapes of gold nanoparticles, gold nanorods (AuNRs) have attracted considerable attention due to their anisotropic structures and high surface area that could facilitate faster electron transfer capability on the electrode surface .…”

Section: Introductionmentioning

confidence: 99%

Effect of Aspect Ratio of a Gold-Nanorod-Modified Screen-Printed Carbon Electrode for Carbaryl Detection in Three Different Samples of Vegetables

Wahyuni,

Putra,

Rahman

et al. 2023

ACS Omega

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In this study, three different sizes of gold nanorods (AuNRs) were synthesized using the seed-growth method by adding various volumes of AgNO 3 as 400, 600, and 800 μL into the growth solution of gold nanoparticles. Three different sizes of AuNRs were then characterized using UV−vis spectroscopy, highresolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) patterns, and atomic force microscopy (AFM) to investigate the surface morphology, topography, and aspect ratios of each synthesized AuNR. The aspect ratios from the histogram of size distributions of three AuNRs as 2.21, 2.53, and 2.85 can be calculated corresponding to the addition of AgNO 3 volumes of 400, 600, and 800 μL. Moreover, each AuNR in three different aspect ratios was drop-cast onto the surface of a commercial screen-printed carbon electrode (SPCE) to obtain three different SPCE-modified AuNRs (SPCE-A400, SPCE-A600, and SPCE-A800, respectively). All SPCE-modified AuNRs were then evaluated for their electrochemical behavior using cyclic voltammetry and electrochemical impedance spectroscopy (EIS) techniques and the highest electrochemical performance was shown as the order of magnitude of SPCE-A400 > SPCE-A600/SPCE-A800. The reason for the highest electrocatalytic activity of SPCE-A400 might be due to the smallest particle size and uniform distribution of AuNRs ∼ 2.2, which enhanced the charge transfer, thus providing the highest electroactive surface area (0.6685 cm 2 ) compared to other electrodes. These results also confirm that the sensing mechanism for all SPCE-modified AuNRs is controlled by diffusion phenomena. In addition, the optimum pH was obtained as 4 for carbaryl detection for all SPCE-modified AuNRs with the highest current shown by SPCE-A400. Furthermore, SPCE-A400 has the highest fundamental parameters (surface coverage, catalytic rate constant, electron transfer rate constant, and adsorption capacity) for carbaryl detection, which were investigated using cyclic voltammetry and chronoamperometric techniques. The electroanalytical performances of all SPCE-modified AuNRs for carbaryl detection were also investigated with SPCE-A400 displaying the best performance among other electrodes in terms of its linearity (0.2−100 μM), limit of detection (LOD) ∼ 0.07 μM, and limit of quantification (LOQ) ∼ 0.2 μM. All SPCE-modified AuNRs were also subsequently evaluated for their stability, reproducibility, and selectivity in the presence of interfering species such as NaNO 2 , NH 4 NO 3 , Zn(CH 3 CO 2 ) 2 , FeSO 4 , diazinon, and glucose and show reliable results as depicted from %RSD values less than 3%. At last, all SPCE-modified AuNRs have been employed for carbaryl detection using a standard addition technique in three different samples of vegetables (cabbage, cucumber, and Chinese cabbage) with its results (%recovery ≈ 100%) within the acceptable analytical range. In conclusion, this work demonstrates the great potential of a disposable device based on an AuNR-modified SPCE for rapid detection and high ...

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Simultaneous detection of trace Pb(II) and Cd(II) cations in ore samples by anodic stripping analysis using pMO/erGO‐modified glassy carbon electrodes

Diédhiou,

Sebei,

Fall

et al. 2023

Electroanalysis

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Environmental safety is of paramount importance for human well‐being, imposing significant demands for affordable, rapid, portable, and robust analytical tools for real‐time and on‐site water monitoring. In this context, we have developed an analytical method to efficiently detect heavy metal ions, particularly Pb2+ ions, in water samples. This method employs a stepwise‐prepared electrode comprised of a thin film of poly(methyl orange) (pMO) electrochemically deposited onto reduced graphene oxide (erGO), which is in turn coated on a glassy carbon electrode (GCE). The resulting pMO/erGO/GCE electrode was characterized using Raman spectroscopy, scanning electron microscopy (SEM), and electrochemical techniques. Square wave anodic stripping voltammetry (SWASV) was subsequently employed to detect the target ions. Importantly, the pMO/erGO/GCE electrode exhibits excellent analytical performance, featuring a broad linear concentration range spanning from 14 to 595 parts per billion (ppb), a sensitivity of 5.60 μA ppb−1 cm−2, and a theoretical calculated value of the detection limit of 0.82 ppb. The effectiveness of this sensor was validated through successful testing of aqueous samples from dissolved ores containing both lead(II) and cadmium(II) cations, as determined by atomic absorption spectroscopy.

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Laser-induced graphene electrodes on polyimide membranes modified with gold nanoparticles for the simultaneous detection of dopamine and uric acid in human serum

Cited by 10 publications

References 52 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

Effect of Aspect Ratio of a Gold-Nanorod-Modified Screen-Printed Carbon Electrode for Carbaryl Detection in Three Different Samples of Vegetables

Simultaneous detection of trace Pb(II) and Cd(II) cations in ore samples by anodic stripping analysis using pMO/erGO‐modified glassy carbon electrodes

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