Simultaneous electrochemical detection of ascorbic acid and dopamine on Cu2O/CuO/electrochemically reduced graphene oxide (CuxO/ERGO)-nanocomposite-modified electrode

Doğan, Hülya Öztürk; Urhan, Bingül Kurt; Çepni̇, Emir; Eryiğit, Mesut

doi:10.1016/j.microc.2019.104157

Cited by 37 publications

(8 citation statements)

References 43 publications

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“…graphene/P 4 SAc, ZnO-rGO, MnO 2 /MWCNT, and MWCNT-COOH/Poly(TB)-based DA sensors. (30)(31)(32)(33) Although the DA sensor based on Cu x O/ERGO/Au (34) has an even wider linear range and a smaller LOD than those in the present work, oxygen gas must be introduced during the electrochemical deposition process for the fabrication of the Cu 2 O/CuO/ERGO nanocomposite, which makes the fabrication process inconvenient. Moreover, the stability of the DA sensor in the present work is higher.…”

Section: Continuous Detection Of Da By Lsvmentioning

confidence: 81%

Electrochemical Sensor Based on Electroactive Polymer and Sulfo-group-functionalized Graphene Oxide Composite for Detection of Dopamine

Li¹,

Sakamoto²,

Takamura³

et al. 2021

Sensors and Materials

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A novel dopamine (DA) sensor based on a polymerized mediator (PEI-Fc) and sulfo-groupfunctionalized graphene oxide (PEI-Fc/SFGO) composite modified electrode was developed. The PEI-Fc/SFGO composite was formed by electrostatic interaction, in which ferrocene (Fc) groups served as an electron transfer mediator to improve the sensitivity. Scanning electron microscopy (SEM) was employed to characterize the surface morphology of the PEI-Fc/SFGO composite. Ultraviolet visible spectroscopy (UV-vis) and Fourier transform infrared (FTIR) spectroscopy were performed to characterize the PEI-Fc and SFGO, respectively. Cyclic voltammetry (CV) was employed to investigate the electrochemical behavior of the PEI-Fc/ SFGO composite modified electrode. Linear sweep voltammetry (LSV) was employed for the quantitative detection of DA. The as-prepared sensor realized a wide linear range of 0.5-100 μM with a low limit of detection (LOD) of 0.1 μM for the determination of DA. This work provides a simple surface modification technique and a potential electrode material for the detection of DA.

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Section: Continuous Detection Of Da By Lsvmentioning

confidence: 81%

Electrochemical Sensor Based on Electroactive Polymer and Sulfo-group-functionalized Graphene Oxide Composite for Detection of Dopamine

Li¹,

Sakamoto²,

Takamura³

et al. 2021

Sensors and Materials

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show abstract

“…modified electrodes were fabricated for selective detection of DA. [140] An ultrahigh sensitive electrode was developed by incorporating Pd@Au nanoalloys and subsequent functionalization of multiple GR aerogel (MGA) with nitrogen and sulfur. [141] The as-synthesized Pd@Au/N@S-MGA composite showed a LOD as low as 3.6 × 10 À 10 M. Another strategy has been followed to synthesize gallic acid (GA)-supported rGO-impregnated AuNPs.…”

Section: Selective Determination Of Damentioning

confidence: 99%

Graphene and Carbon Nanotube‐based Electrochemical Sensing Platforms for Dopamine

Islam

Shah

Naher

et al. 2021

Chemistry An Asian Journal

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Dopamine (DA) is an important neurotransmitter, which is created and released from the central nervous system. It plays a crucial role in human activities, like cognition, emotions, and response to anything. Maladjustment of DA in human blood serum results in different neural diseases, like Parkinson's and Schizophrenia. Consequently, researchers have started working on DA detection in blood serum, which is undoubtedly a hot research area. Electrochemical sensing techniques are more promising to detect DA in real samples. However, utilizing conventional electrodes for selective determination of DA encounters numerous problems due to the coexistence of other materials, such as uric acid and ascorbic acid, which have an oxidation potential close to DA. To overcome such problems, researchers have put their focus on the modification of bare electrodes. The aim of this review is to present recent advances in modifications of most used bare electrodes with carbonaceous materials, especially graphene, its derivatives, and carbon nanotubes, for electrochemical detection of DA. A brief discussion about the mechanistic phenomena at the electrode interface has also been included in this review.

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“…[25,[35][36][37][38] The particle size and shape of materials significantly affect their electrocatalytic activity. [25] CuO nanomaterials of various shapes have been designed and studied for glucose sensing applications including nanospheres, [39] nanorods, [40] nanowires, [41] nanocubes, [42] nanosheets, [43][44] nanofibers, [45] nanoflowers [46][47] and octahedra. [48][49] In addition, the fabrication of electrodes for non-enzymatic sensors by a drop casting process through the help of costly binder polymer solutions possesses some disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Fabrication of 2D CuO Nanosheets on Pt Foil as a Highly Sensitive Non‐Enzymatic Glucose Sensor

2023

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A simple and environmentally‐friendly approach was developed to synthesize 2D CuO nanosheets using electrochemical deposition. The formed 2D CuO nanosheets (NSs) exhibit numerous advantageous properties such as no toxicity, high electrical conductivity, large active surface area, and a p‐type semiconducting nature with a band gap of 1.2 eV. A sensitive electrochemical sensor was constructed for the amperometric detection of glucose to take advantage of these characteristics. The fabricated sensor displayed an excellent sensitivity of 2710 μA mM−1 cm−2 along with a wide linear range of 0.001–1.0 mM and a lower limit of detection of 0.8 μM (S/N=3). Additionally, the modified electrode possesses high selectivity and good stability. The outstanding electrocatalytic performance of the electrode is attributed to a large active surface area, unique structural morphology, and the high conductivity of the 2D CuO nanosheets.

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Simultaneous electrochemical detection of ascorbic acid and dopamine on Cu2O/CuO/electrochemically reduced graphene oxide (CuxO/ERGO)-nanocomposite-modified electrode

Cited by 37 publications

References 43 publications

Electrochemical Sensor Based on Electroactive Polymer and Sulfo-group-functionalized Graphene Oxide Composite for Detection of Dopamine

Electrochemical Sensor Based on Electroactive Polymer and Sulfo-group-functionalized Graphene Oxide Composite for Detection of Dopamine

Graphene and Carbon Nanotube‐based Electrochemical Sensing Platforms for Dopamine

Electrochemical Fabrication of 2D CuO Nanosheets on Pt Foil as a Highly Sensitive Non‐Enzymatic Glucose Sensor

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