Fabrication of 3D honeycomb-like porous polyurethane-functionalized reduced graphene oxide for detection of dopamine

Vilian, A.T. Ezhil; An, Suyeong; Choe, Soonja; Kwak, Cheol Hwan; Huh, Yun Suk; Lee, Jonghwi; Han, Young‐Kyu

doi:10.1016/j.bios.2016.06.022

Cited by 56 publications

(11 citation statements)

References 45 publications

(39 reference statements)

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“…9,10 In recent years, electrochemical methods of detection have gathered enormous interest due to the simplicity, low cost, fast response time, low detection limit, high sensitivity and selectivity. 11,12 Noble metal nanoparticles such as gold (Au), palladium (Pd), platinum (Pt) and silver (Ag) are broadly utilized as modied electrodes for electrochemical sensor applications. 13,14 The superior conductivity and electrocatalytic activity of Pt makes it an attractive material for sensor applications.…”

Section: Introductionmentioning

confidence: 99%

A dopamine electrochemical sensor based on a platinum–silver graphene nanocomposite modified electrode

et al. 2020

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Section: Introductionmentioning

confidence: 99%

A dopamine electrochemical sensor based on a platinum–silver graphene nanocomposite modified electrode

et al. 2020

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“…Dopamine (DA, 3,4-dihydroxy phenylalanine) is an essential biological small molecule, which plays an important biological roles in human metabolism as well as central nervous system of mammalian 1 2 3 . The higher concentration of DA is a cardiotoxic including death of heart muscles, high blood pressure and high heart rate.…”

mentioning

confidence: 99%

“…Therefore, the low level detection of DA in biological samples has been much important in analytical and biomedical applications. To date, the electrochemical methods have been widely considered for the determination of DA owing to their remarkable properties such as simplicity, low cost, eco-friendly and higher sensitivity 2 . Over the past decays, various modified electrodes have been utilized for the determination of DA in the literature.…”

mentioning

confidence: 99%

One-Pot Green Synthesis of Graphene Nanosheets Encapsulated Gold Nanoparticles for Sensitive and Selective Detection of Dopamine

Thirumalraj

Rajkumar

Chen

et al. 2017

Sci Rep

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We report a simple new approach for green preparation of gallic acid supported reduced graphene oxide encapsulated gold nanoparticles (GA-RGO/AuNPs) via one-pot hydrothermal method. The as-prepared composites were successfully characterized by using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray powder diffraction techniques (XRD), scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM) and elemental analysis. The GA-RGO/AuNPs modified electrode behaves as a hybrid electrode material for sensitive and selective detection of dopamine (DA) in presence of ascorbic acid (AA) and uric acid (UA). The GA-RGO/AuNPs modified electrode displays an excellent electrocatalytic activity towards the oxidation of DA and exhibits a wide linear response range over the DA concentrations from 0.01–100.3 μM with a detection limit (LOD) of 2.6 nM based on S/N = 3. In addition, the proposed sensor could be applied for the determination of DA in human serum and urine samples for practical analysis.

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“…The D band indicates the presence of defects caused by the sp 3 hybridized carbon atoms, while the G band is a typical peak exhibited by the pristine sp 2 lattice carbon atoms in the graphene sheet. The broadened 2D peak at 2700 cm −1 indicates that GO was reduced and composed of multi-layers of stacked graphene nanosheet [35][36][37][38]. In addition, the anodic peak current of bare GCE was reduced from 76.2 µA to about 0.9 µA, which was due to the insulating properties of non-reduced GO layer on GCE resulting in the repulsion of [Fe(CN) 6 ] 3−/4− on the GCE surface − .…”

Section: Optimization and Characterization Of 3d-rgo/aunps Nanocomposmentioning

confidence: 98%

Label-Free and Highly-Sensitive Detection of Ochratoxin A Using One-Pot Synthesized Reduced Graphene Oxide/Gold Nanoparticles-Based Impedimetric Aptasensor

Alhamoud

Zhou

et al. 2021

Biosensors

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Ochratoxin A (OTA) primarily obtained by the genera aspergillus and penicillium, is one of the toxic substances for different organs and systems of the human body such as the kidney, liver, neurons and the immune system. Moreover, it is considered to cause tumors and fetal malformation even at a very low concentration. Fast and sensitive assay for detection of OTA at ultralow levels in foods and agricultural products has been an increasing demand. In this study, a new label-free electrochemical biosensor based on three-dimensional reduced graphene oxide/gold nanoparticles/aptamer for OTA detection was constructed. The 3D-rGO/Au NPs nanocomposites were firstly synthesized using a one-pot hydrothermal process under optimized experimental conditions. The 3D-rGO/Au NPs with considerable particular surface area and outstanding electrical conductivity was then coated on a glass carbon electrode to provide tremendous binding sites for -SH modified aptamer via the distinctive Au–S linkage. The presence of OTA was specifically captured by aptamer and resulted in electrochemical impedance spectroscopy (EIS) signal response accordingly. The constructed impedimetric aptasensor obtained a broad linear response from 1 pg/mL to 10 ng/mL with an LOD of 0.34 pg/mL toward OTA detection, highlighting the excellent sensitivity. Satisfactory reproducibility was also achieved with the relative standard deviation (RSD) of 1.393%. Moreover, the proposed aptasensor obtained a good recovery of OTA detection in red wine samples within the range of 93.14 to 112.75% along with a low LOD of 0.023 ng/mL, indicating its applicability for OTA detection in real samples along with economical, specific, susceptible, fast, easy, and transportable merits.

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Fabrication of 3D honeycomb-like porous polyurethane-functionalized reduced graphene oxide for detection of dopamine

Cited by 56 publications

References 45 publications

A dopamine electrochemical sensor based on a platinum–silver graphene nanocomposite modified electrode

A dopamine electrochemical sensor based on a platinum–silver graphene nanocomposite modified electrode

One-Pot Green Synthesis of Graphene Nanosheets Encapsulated Gold Nanoparticles for Sensitive and Selective Detection of Dopamine

Label-Free and Highly-Sensitive Detection of Ochratoxin A Using One-Pot Synthesized Reduced Graphene Oxide/Gold Nanoparticles-Based Impedimetric Aptasensor

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