Electrochemical determination of thiols at single-wall carbon nanotubes and PQQ modified electrodes

10.2741/1587 ◽  
2005 ◽  
Vol 10 (1-3) ◽  
pp. 931 ◽  
Author(s):  
Heyou, Han
Keyword(s):  
Carbon Nanotubes ◽  
Modified Electrodes ◽  
Electrochemical Determination ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

scholarly journals Determination of moisture content of single-wall carbon nanotubes

2011 ◽  
Vol 402 (1) ◽  
pp. 429-438 ◽  
Author(s):  
Ralph E. Sturgeon ◽  
Joseph W. Lam ◽  
Anthony Windust ◽  
Patricia Grinberg ◽  
Rolf Zeisler ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Moisture Content ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

scholarly journals Determination of Phenol and Chlorophenols at Single-Wall Carbon Nanotubes/Poly(3,4-ethylenedioxythiophene) Modified Glassy Carbon Electrode Using Flow Injection Amperometry

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Negussie Negash ◽  
Hailemichael Alemu ◽  
Merid Tessema
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Flow Injection ◽  
Analytical Performance ◽  
Single Wall Carbon Nanotubes ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Single Wall Carbon

Phenol and chlorophenols were investigated using single-wall carbon nanotubes (SWCNT) and poly(3,4-ethylenedioxythiophene) (PEDOT) composite modified glassy carbon electrode (SWCNT/PEDOT/GCE) as a detector in flow injection system. Optimization of experimental variables such as the detection potential, flow rate, and pH of the carrier solution (0.1 M sodium acetate) for the determination of phenol (P), 4-chlorophenol (CP), 2,4-dichlorophenol (DCP), 2,4,6-trichlorophenol (TCP), and pentachlorophenol (PCP) were performed. Under these conditions, analytical parameters were calculated from the calibration curve of measured amperometric responses as a function of concentrations of phenol and chlorophenols. The designed electrode exhibited very good analytical performance. The designed electrode was tested with 20 repetitive injections of each analyte and showed good operational stability. The analytical performance of the SWCNT/PEDOT/GCE electrode under flow through conditions was tested and was found to be impressive. The electrode showed a wider dynamic range for the detection of phenol and chlorophenols with low limits of detection compared with other enzymatic and nonenzymatic sensors. These results suggest that the method is quite useful for the analysis and monitoring of phenols and chlorophenols.

Structure determination of individual single-wall carbon nanotubes by nanoarea electron diffraction

2003 ◽  
Vol 82 (16) ◽  
pp. 2703-2705 ◽  
Author(s):  
M. Gao ◽  
J. M. Zuo ◽  
R. D. Twesten ◽  
I. Petrov ◽  
L. A. Nagahara ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Diffraction ◽  
Structure Determination ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Peculiarities of the electrochemical behavior of modified electrodes containing single-wall carbon nanotubes

2005 ◽  
Vol 7 (2) ◽  
pp. 199-204 ◽  
Author(s):  
Alexander G. Krivenko ◽  
Vladimir I. Matyushenko ◽  
Elena V. Stenina ◽  
Liana N. Sviridova ◽  
Anatoly V. Krestinin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Behavior ◽  
Modified Electrodes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Overoxidized Polypyrrole/Sodium Dodecyl Sulfate/Single Wall Carbon Nanotubes Matrix for the Simultaneous Electrochemical Determination of Heavy Metal Ions by Adsorptive Stripping Voltammetry

2020 ◽  
Vol 18 (11) ◽  
pp. 811-818
Author(s):  
Sarra Slimi ◽  
Houcine Barhoumi ◽  
Nicole Jaffrezic-Renault
Keyword(s):  
Carbon Nanotubes ◽  
Metal Ions ◽  
Anodic Stripping Voltammetry ◽  
Sodium Dodecyl ◽  
Stripping Voltammetry ◽  
Electrochemical Determination ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Lead And Cadmium ◽  
Overoxidized Polypyrrole

In this work, we report an overoxidized polypyrrole (oPPy)/single-wall carbon nanotubes (SWCNTs) matrix, electrochemically coated onto a glassy carbon electrode (GCE). This matrix was characterized by AFM, FTIR, and cyclic voltammetry. It is shown that the developed permslective matrix allows the simultaneous quantification of multiple metal ions, including zinc, cadmium, and lead, using square wave anodic stripping voltammetry. The sensitivities of the oPPy/SWCNTs/GCE for Zn2+, Cd2+, and Pb2+ are respectively, 8.89, 41.3, and 45.4 μA mol L~1. The detection limits of Cd2+ and Pb2+ were found to be respectively equal to 37 μg/L and 69 μg/L In addition, the developed oPPy/SWCNTs based sensor has been successfully used for the detection of lead and cadmium in wastewater samples.

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