Highly sensitive and simultaneous detection of dopamine and uric acid at graphene nanoplatelet-modified fluorine-doped tin oxide electrode in the presence of ascorbic acid

2017 ◽  
Vol 792 ◽  
pp. 54-60 ◽  
Author(s):  
Md. Mahbubur Rahman ◽  
Nasrin Siraj Lopa ◽  
Myung Jong Ju ◽  
Jae-Joon Lee
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Tin Oxide ◽  
Simultaneous Detection ◽  
Oxide Electrode ◽  
Graphene Nanoplatelet ◽  
Highly Sensitive

Graphenated ceramic nanofibers for highly sensitive simultaneous detection of dopamine, uric acid and ascorbic acid

2017 ◽  
Vol 8 (12) ◽  
pp. 1178-1183 ◽  
Author(s):  
Masoud Taleb ◽  
Irina Hussainova ◽  
Roman Ivanov ◽  
Iwona Jasiuk
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Simultaneous Detection ◽  
Highly Sensitive ◽  
Ceramic Nanofibers

Electrodeposition synthesis of reduced graphene oxide–carbon nanotube hybrids on indium tin oxide electrode for simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106307-106314 ◽  
Author(s):  
Yong Zhang ◽  
Ye Ji ◽  
Ziying Wang ◽  
Sen Liu ◽  
Tong Zhang
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Oxide Electrode ◽  
Indium Tin Oxide Electrode ◽  
Reduced Graphene

Reduced graphene oxide–carbon nanotube (rGO–CNT) hybrids have been synthesized by electrodeposition of GO stabilized CNT using indium tin oxide (ITO) as working electrode, followed by electrochemical reduction of GO–CNT into rGO–CNT.

Gold nanoparticle-decorated MoS2 nanosheets for simultaneous detection of ascorbic acid, dopamine and uric acid

RSC Advances ◽  
2014 ◽  
Vol 4 (52) ◽  
pp. 27625 ◽  
Author(s):  
Haofan Sun ◽  
Jie Chao ◽  
Xiaolei Zuo ◽  
Shao Su ◽  
Xingfen Liu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Gold Nanoparticle ◽  
Simultaneous Detection ◽  
Mos2 Nanosheets

2D-titanium carbide (MXene) based selective electrochemical sensor for simultaneous detection of ascorbic acid, dopamine and uric acid

2021 ◽  
Vol 72 ◽  
pp. 122-131
Author(s):  
Nagaraj Murugan ◽  
Rajendran Jerome ◽  
Murugan Preethika ◽  
Anandhakumar Sundaramurthy ◽  
Ashok K. Sundramoorthy
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Titanium Carbide ◽  
Electrochemical Sensor ◽  
Simultaneous Detection

scholarly journals N-Doped Reduced Graphene Oxide/Gold Nanoparticles Composite as an Improved Sensing Platform for Simultaneous Detection of Dopamine, Ascorbic Acid, and Uric Acid

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4427
Author(s):  
Daria Minta ◽  
Zoraida González ◽  
Piotr Wiench ◽  
Stanisław Gryglewicz ◽  
Grażyna Gryglewicz
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Detection Limit ◽  
Electrochemical Performance ◽  
Reduced Graphene Oxide ◽  
Simultaneous Detection ◽  
Homogeneous Distribution ◽  
Reduced Graphene

Gold nanoparticles (AuNPs) were homogeneously electrodeposited on nitrogen-doped reduced graphene oxide (N-rGO) to modify a glassy carbon electrode (GCE/N-rGO-Au) in order to improve the simultaneous detection of dopamine (DA), ascorbic acid (AA), and uric acid (UA). N-rGO was prepared by the hydrothermal treatment of graphene oxide (GO) and urea at 180 °C for 12 h. AuNPs were subsequently electrodeposited onto the surface of GCE/N-rGO using 1 mM HAuCl4 solution. The morphology and chemical composition of the synthesized materials were characterized by field-emission scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance of the modified electrodes was investigated through cyclic voltammetry and differential pulse voltammetry measurements. Compared to GCE/rGO-Au, GCE/N-rGO-Au exhibited better electrochemical performance towards the simultaneous detection of the three analytes due to the more homogeneous distribution of the metallic nanoparticles as a result of more efficient anchoring on the N-doped areas of the graphene structure. The GCE/N-rGO-Au-based sensor operated in a wide linear range of DA (3–100 µM), AA (550–1500 µM), and UA (20–1000 µM) concentrations with a detection limit of 2.4, 58, and 8.7 µM, respectively, and exhibited satisfactory peak potential separation values of 0.34 V (AA-DA), 0.20 V, (DA-UA) and 0.54 V (AA-UA). Remarkably, GCE/N-rGO-Au showed a very low detection limit of 385 nM towards DA, not being susceptible to interference, and maintained 90% of its initial electrochemical signal after one month, indicating an excellent long-term stability.

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