Modified platinum electrode with phytic acid and single-walled carbon nanotube: Application to the selective determination of dopamine in the presence of ascorbic and uric acids

2008 ◽  
Vol 88 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Suhee Jo ◽  
Haesang Jeong ◽  
Si Ra Bae ◽  
Seungwon Jeon
Keyword(s):  
Carbon Nanotube ◽  
Phytic Acid ◽  
Platinum Electrode ◽  
Single Walled Carbon Nanotube ◽  
Selective Determination ◽  
Single Walled Carbon

scholarly journals Electrocatalytic Study of Paracetamol at a Single-Walled Carbon Nanotube/Nickel Nanocomposite Modified Glassy Carbon Electrode

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Koh Sing Ngai ◽  
Wee Tee Tan ◽  
Zulkarnain Zainal ◽  
Ruzniza Mohd Zawawi ◽  
Joon Ching Juan
Keyword(s):  
Cyclic Voltammetry ◽  
Carbon Nanotube ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Single Walled Carbon Nanotube ◽  
Paracetamol Concentration ◽  
Single Walled Carbon

A rapid, simple, and sensitive method for the electrochemical determination of paracetamol was developed. A single-walled carbon nanotube/nickel (SWCNT/Ni) nanocomposite was prepared and immobilized on a glassy carbon electrode (GCE) surface via mechanical attachment. This paper reports the voltammetry study on the effect of paracetamol concentration, scan rate, pH, and temperature at a SWCNT/Ni-modified electrode in the determination of paracetamol. The characterization of the SWCNT/Ni/GCE was performed by cyclic voltammetry. Variable pressure scanning electron microscopy (VPSEM) and energy dispersive X-ray (EDX) spectrometer were used to examine the surface morphology and elemental profile of the modified electrode, respectively. Cyclic voltammetry showed significant enhancement in peak current for the determination of paracetamol at the SWCNT/Ni-modified electrode. A linear calibration curve was obtained for the paracetamol concentration between 0.05 and 0.50 mM. The SWCNT/Ni/GCE displayed a sensitivity of 64 mA M−1and a detection limit of 1.17 × 10−7 M in paracetamol detection. The proposed electrode can be applied for the determination of paracetamol in real pharmaceutical samples with satisfactory performance. Results indicate that electrodes modified with SWCNT and nickel nanoparticles exhibit better electrocatalytic activity towards paracetamol.

Precise Determination of the Threshold Diameter for a Single-Walled Carbon Nanotube To Collapse

ACS Nano ◽  
2014 ◽  
Vol 8 (9) ◽  
pp. 9657-9663 ◽  
Author(s):  
Maoshuai He ◽  
Jichen Dong ◽  
Kaili Zhang ◽  
Feng Ding ◽  
Hua Jiang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Precise Determination ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

scholarly journals Achievements of Mesoporous Carbon Solution and Single-Walled Carbon Nanotube Composite on the Sensitive Electrochemical Assay of Ivabradine

Analytica ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 195-205
Author(s):  
Merve Yence ◽  
Leyla Karadurmus ◽  
Goksu Ozcelikay ◽  
Nurgul K. Bakirhan ◽  
Sibel A. Ozkan
Keyword(s):  
Carbon Nanotube ◽  
Mesoporous Carbon ◽  
Urine Analysis ◽  
Calibration Plot ◽  
Electrochemical Assay ◽  
Experimental Conditions ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Serum And Urine

In this study, the electrochemical determination of Ivabradine hydrochloride (IH) was studied in detail using a glassy carbon electrode (GCE) modified with mesoporous carbon solution (MCS) and carboxylated group linked single-walled carbon nanotube (SWCNT-COOH). The developed nanosensor showed a significant effect by remarkably increasing the IH signal compared with the bare GCE. Cyclic (CV) and differential pulse voltammetric (DPV) methods were applied to perform electrochemical analysis of IH in pH 3.0 BRB solutions. The calibration plot for IH with a detection limit of 1.47 × 10−7 M was obtained using the DPV technique in the range of 1–10 µM under optimum experimental conditions. The proposed method has been validated and applied for the detection of the IH tablet. The produced nanosensor was also performed for the determination of IH in serum and urine. Excellent recoveries of 98.4%, 98.0%, and 100.2% were achieved for tablet, serum, and urine analysis, respectively.

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