scholarly journals Electrochemical Determination of Cadmium and Lead on Pristine Single-walled Carbon Nanotube Electrodes

2012 ◽  
Vol 28 (7) ◽  
pp. 699-704 ◽  
Author(s):  
Minh-Phuong Ngoc BUI ◽  
Cheng Ai LI ◽  
Kwi Nam HAN ◽  
Xuan-Hung PHAM ◽  
Gi Hun SEONG
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Determination ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Cadmium And Lead

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
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