A promising sensing platform toward dopamine using MnO2 nanowires/electro-reduced graphene oxide composites

He, Quanguo; Li, Jun; Liu, Xiaopeng; Li, Guangli; Chen, Dongchu; Deng, Peihong; Liang, Jing

doi:10.1016/j.electacta.2018.11.096

Cited by 220 publications

(118 citation statements)

References 65 publications

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“…Three linear ranges (0.01-0.10 µM, 0.10-1.0 µM, 1.0-80 µM) were obtained on this promising sensing platform, with LOD of 1 nM. The proposed sensor showed high accuracy and good recovery when it was applied to detect DA in human samples [118]. Table 1 summarizes some recent studies that used carbon-based material as a sensing platform for DA quantification.…”

Section: Carbon-based Ec Sensormentioning

confidence: 97%

“…After reduction, the conductive carbon-conjugated networks can be restored, and this leads to increased electrical conductivity in rGO compared to GO. Recently, integrating MnO 2 NWs with electrochemically reduced graphene oxide (ERGO) have been successfully done by He et al (2019). They modified GCEs using MnO 2 NWs/ERGO nanocomposites for ultrasensitive EC detection of DA.…”

Section: Carbon-based Ec Sensormentioning

confidence: 99%

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Recent Advances in Electrochemical and Optical Sensing of Dopamine

Eddin

Fen

2020

Sensors

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Nowadays, several neurological disorders and neurocrine tumours are associated with dopamine (DA) concentrations in various biological fluids. Highly accurate and ultrasensitive detection of DA levels in different biological samples in real-time can change and improve the quality of a patient’s life in addition to reducing the treatment cost. Therefore, the design and development of diagnostic tool for in vivo and in vitro monitoring of DA is of considerable clinical and pharmacological importance. In recent decades, a large number of techniques have been established for DA detection, including chromatography coupled to mass spectrometry, spectroscopic approaches, and electrochemical (EC) methods. These methods are effective, but most of them still have some drawbacks such as consuming time, effort, and money. Added to that, sometimes they need complex procedures to obtain good sensitivity and suffer from low selectivity due to interference from other biological species such as uric acid (UA) and ascorbic acid (AA). Advanced materials can offer remarkable opportunities to overcome drawbacks in conventional DA sensors. This review aims to explain challenges related to DA detection using different techniques, and to summarize and highlight recent advancements in materials used and approaches applied for several sensor surface modification for the monitoring of DA. Also, it focuses on the analytical features of the EC and optical-based sensing techniques available.

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Section: Carbon-based Ec Sensormentioning

confidence: 97%

Section: Carbon-based Ec Sensormentioning

confidence: 99%

Recent Advances in Electrochemical and Optical Sensing of Dopamine

Eddin

Fen

2020

Sensors

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“…In this regard, reduced graphene oxide (rGO) can be an appropriate support matrix owing to its unique characteristics of excellent electrical conductivity, large specific surface area, and good biocompatibility . Thus, if the metal nano‐alloys are supported on the rGO nano‐sheets, the electrochemical efficacy of the material can be sufficiently enhanced to establish the non‐enzymatic electrochemical sensing platform . For example, a new non‐enzymatic electrochemical sensing platform was established based on bimetallic Fe−Pd NPs on the surface of rGO and coupled with portable paper sensor for the early stage diagnosis of glucose in urine .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Non‐enzymatic Electrochemical Glucose Sensor Based on Pd−Mn Alloy Nanoparticles Supported on Reduced Graphene Oxide

et al. 2020

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Mixed metals alloy nanoparticles supported on carbon nanomaterial are the most attractive candidates for the fabrication of non‐enzymatic electrochemical sensor with enhanced electrochemical performance. In this study, palladium‐manganese alloy nanoparticles supported on reduced graphene oxide (Pd−Mn/rGO) are prepared by a simple reduction protocol. Further, a novel enzyme‐free glucose sensing platform is established based on Pd−Mn/rGO. The successful fabrication of Pd−Mn alloy nanoparticles and their attachment at rGO are thoroughly characterized by various microscopic and spectroscopic techniques such as XRD, Raman, TEM and XPS. The electrochemical activity and sensing features of designed material towards glucose detection are explored by amperometric measurments in 0.1 M NaOH at the working voltage of −0.1 V. Thanks to the newly designed Pd−Mn/rGO nanohybrid for their superior electrorochemical activity towards glucose comprising the admirable sensing features in terms of targeted selectivity, senstivity, two linear parts and good stability. The enhanced electrochemical efficacy of Pd−Mn/rGO electrocatalyst may be credited to the abundant elecrocatalytic active sites formed during the Pd−Mn alloying and the electron transport ability of rGO that augment the electron shuttling phenomenon between the electrode material and targeted analyte.

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“…The GO analytical performance can be enhanced by controlled immobilization of various electro-active materials on existing active sites for developing electrochemical sensors and biosensors [44][45][46][47]. One of the most common functionalization is utilizing nanoparticles as a promising way to make nanoscale composite electrodes [21,48]. By enhancing properties of these host material, they are applicable in catalysis, opto-electronic materials, surface enhanced Raman Scattering, and biomedical fields [27,31,49,50].…”

Section: Introductionmentioning

confidence: 99%

Application of carboxylic acid-functionalized of graphene oxide for electrochemical simultaneous determination of tryptophan and tyrosine in milk

Fooladi¹,

Razavizadeh²,

Noori³

et al. 2020

SN Appl. Sci.

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In this work, a new method for the simultaneous determination of tryptophan (Trp) and tyrosine (Tyr) in milk has been reported. Trp and Tyr are essential amino acids in human nutrition, but their electrochemical signal overlapped. For solve this problem, we developed modified Screen Printed Carbon Electrode (SPCE) with Graphene Oxide-COOH/Chitosan (GO-COOH/Chitosan) electro-deposition. The morphology and electrochemical performance of modified electrode were characterized by scanning electron microscopy, energy dispersive spectrometry, FT-IR, electrochemical impedance spectroscopy and cyclic voltammetry. The electrochemical simultaneous determination of Trp and Tyr has been investigated by using differential pulse voltammetry. The carboxylic acid functionalized GO modified SPCE was utilized to catalyze the oxidation of Trp and Tyr. Compared with SPCE/GO/Chitosan and SPCE/Chitosan sensor, the new sensor has enhanced sensitivity, low detection limit and high selectivity. In addition, the SPCE/GO-COOH-Chitosan sensor enhanced separation of the oxidation peak of Tyr and Trp and showed a remarkable increase in peak current for electroactive compounds, thus, it can be used for simultaneous voltammetric determination. Under the optimized experimental conditions, a linear correlation between oxidation peak current and concentration of Tyr and Trp in the ranges 0.1-60 µM and 0.4-40 µM with a detection limit of 0.05 µM (S/N = 3) and 0.1 µM (S/N = 3) were achieved, respectively. Finally, the proposed electrochemical sensor was applied for quantification of Tyr and Trp in milk samples, where standard solutions were spiked to the milk samples and recoveries were obtained.

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A promising sensing platform toward dopamine using MnO2 nanowires/electro-reduced graphene oxide composites

Cited by 220 publications

References 65 publications

Recent Advances in Electrochemical and Optical Sensing of Dopamine

Recent Advances in Electrochemical and Optical Sensing of Dopamine

Fabrication of Non‐enzymatic Electrochemical Glucose Sensor Based on Pd−Mn Alloy Nanoparticles Supported on Reduced Graphene Oxide

Application of carboxylic acid-functionalized of graphene oxide for electrochemical simultaneous determination of tryptophan and tyrosine in milk

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