A sensitive enzyme-free lactic acid sensor based on NiO nanoparticles for practical applications

2019 ◽  
Vol 11 (28) ◽  
pp. 3578-3583 ◽  
Author(s):  
Sidra Amin ◽  
Aneela Tahira ◽  
Amber Solangi ◽  
Raffaello Mazzaro ◽  
Zafar Hussain Ibupoto ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Glassy Carbon ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Nio Nanoparticles ◽  
Modified Glassy Carbon Electrode ◽  
Practical Applications ◽  
Sensing Platform ◽  
First Time

A facile and efficient electrochemical sensing platform has been successfully exploited for the first time for the determination of lactic acid using a nickel oxide (NiO) nanoparticle-modified glassy carbon electrode (GCE).

scholarly journals Electrochemical Determination of Trace Pb (II) by The Modified Glassy Carbon Electrode Compositing MultiWalled Carbon Nanotubes-Nafion-Bi Film

2020 ◽  
pp. 1-12
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Anodic Stripping Voltammetry ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Bismuth Film ◽  
Modified Glassy Carbon Electrode

A modified glassy carbon electrode (GCE) compositing multi-walled carbon nanotubes (MWCNTs), Nafion and bismuth film was prepared and applied for the sensitive detection of trace Pb (II). MWCNTs were dispersed into ethanol by ultrasonication in the presence of Nafion and the nanotubes are coated onto the bare GCE. After that, an extra Nafion adhesion agent is added to the electrode. By the in situ plating, a bismuth film was fabricated on the MWCNTs-NA/GCE, making the desired electrode, MWCNTs-NA-Bi/GCE. The modified electrode was characterized by differential pulse anodic stripping voltammetry, scanning electron microscopy, and cyclic voltammetry. A deposition potential of –1.4 V (vs. Ag/AgCl) and a deposition time of 300 s were applied to the working electrode under stirred conditions after optimizing. Nanotubes and Nafion concentrations and pH were carefully optimized to determine trace lead ions by using the electrode as an electrochemical-sensing platform. Nafion effectively increased the stability and adhesivity of the composite film. The MWCNTs-NA-Bi film modified electrode can remarkably increase the anodic peak current of Pb2+. The sensitivity of MWCNTs-NA-Bi/GCE is 4.35 times higher than that of the bare GCE with bismuth film. The prepared electrode showed excellent stability and reproducibility and can be applied for determination of Pb2+ contained wastewater.

scholarly journals Mucilage-capped silver nanoparticles for glucose electrochemical sensing and fuel cell applications

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 37675-37682
Author(s):  
Ziad Khalifa ◽  
Moustafa Zahran ◽  
Magdy A-H Zahran ◽  
Magdi Abdel Azzem
Keyword(s):  
Silver Nanoparticles ◽  
Fuel Cell ◽  
Electrochemical Oxidation ◽  
Glassy Carbon ◽  
Cost Effective ◽  
Electrochemical Sensing ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
First Time ◽  
Oxidation Of Glucose

A simple, cost-effective and green mucilage-capped silver nanoparticles (Mucilage-AgNPs) modified glassy carbon electrode (GC) composite was constructed for efficient and facile electrochemical oxidation of glucose for the first time.

Layered double hydroxide decorated with Ag nanodendrites as an enhanced sensing platform for voltammetric determination of pyrazinamide

2018 ◽  
Vol 42 (3) ◽  
pp. 2140-2148 ◽  
Author(s):  
Roghayeh Amini ◽  
Karim Asadpour-Zeynali
Keyword(s):  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Layered Double Hydroxide ◽  
Glassy Carbon ◽  
Voltammetric Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Sensing Platform ◽  
Double Hydroxide

A sensitive electrochemical sensor for pyrazinamide was constructed by electrodepositing Ag nanodendrites on the LDH-modified glassy carbon electrode.

A new strategy for simultaneous determination of 4-aminophenol, uric acid and nitrite based on a graphene/hydroxyapatite composite modified glassy carbon electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52703-52709 ◽  
Author(s):  
N. Lavanya ◽  
N. Sudhan ◽  
P. Kanchana ◽  
S. Radhakrishnan ◽  
C. Sekar
Keyword(s):  
Uric Acid ◽  
Electrochemical Sensor ◽  
Glassy Carbon ◽  
Simultaneous Detection ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Hydroxyapatite Composite ◽  
New Strategy ◽  
First Time

A novel electrochemical sensor has been fabricated based on a graphene/hydroxyapatite composite modified GCE for the selective and simultaneous detection of 4-aminophenol, uric acid and nitrite ions (NO2−) by voltammetric method for the first time.

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