Highly Sensitive and Selective Amperometric Detection of Periodate at Glassy Carbon Electrode Modified with a Cyclometalated Iridium(III) Complex and Single-Wall Carbon Nanotubes

2012 ◽  
Vol 60 (2) ◽  
pp. 171-178 ◽  
Author(s):  
Mojtaba Shamsipur ◽  
Mahmoud Roushani ◽  
Ghobad Mansouri
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Amperometric Detection ◽  
Single Wall Carbon Nanotubes ◽  
Carbon Electrode ◽  
Single Wall Carbon ◽  
Highly Sensitive

Direct Electrochemistry of Cytochromecat a Glassy Carbon Electrode Modified with Single-Wall Carbon Nanotubes

2002 ◽  
Vol 74 (9) ◽  
pp. 1993-1997 ◽  
Author(s):  
Jianxiu Wang ◽  
Meixian Li ◽  
Zujin Shi ◽  
Nanqiang Li ◽  
Zhennan Gu
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Direct Electrochemistry ◽  
Single Wall Carbon Nanotubes ◽  
Carbon Electrode ◽  
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.

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