Nanomolar detection limit for determination of norepinephrine in the presence of acetaminophen and tryptophan using carbon nanotube-based electrochemical sensor

Ionics ◽  
2013 ◽  
Vol 20 (3) ◽  
pp. 431-437 ◽  
Author(s):  
Mohammad Mazloum-Ardakani ◽  
Mohammad Ali Sheikh-Mohseni ◽  
Bibi-Fatemeh Mirjalili
Keyword(s):  
Carbon Nanotube ◽  
Detection Limit ◽  
Electrochemical Sensor ◽  
Nanomolar Detection

Self-Assembled Hybrid Films of Graphene/Carbon Nanotube Modified Electrode for Sensitive and Selective Determination of Rutin

2012 ◽  
Vol 531 ◽  
pp. 419-422 ◽  
Author(s):  
Zong Hua Wang ◽  
Shu Yan Yao ◽  
Jian Fei Xia ◽  
Fei Fei Zhang ◽  
Xin Mei Guo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rapid Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Hybrid Films ◽  
Selective Determination

Abstract: Graphene/Carbon Nanotube hybrid films modified glassy carbon electrode (GN-CNT/GC) was fabricated as electrochemical sensor for the sensitive and rapid determination of rutin. The electrochemical behaviors of rutin at the GN-CNT/GC have been investigated. Rutin can generate a pair of well-defined redox peaks at the GN-CNT/GC located at 0.450 V (Epa) and 0.409 V (Epc). Compared with graphene modified glassy carbon electrode (GN/GC) and carbon nanotube modified glassy carbon electrode (CNT/GC), GN-CNT/GC showed a higher catalytic activity toward rutin. This result indicates that the GN-CNT hybrid films as a modifier strengthens the adsorption of rutin. Cyclic voltammetry (CV), different pulse voltammetry (DPV) and transmission electron microscopy (TEM) were employed to characterize the electrochemical sensor and hybrid films. Under the optimal conditions, the oxidation peak current is linear to the rutin concentration over the range of 2.0×10-7-6.0×10-5 M and the detection limits were 1.0×10-7 M.

scholarly journals Carbon Nanotube-Based Electrochemical Sensor for the Determination of Anthraquinone Hair Dyes in Wastewaters

Chemosensors ◽  
2015 ◽  
Vol 3 (1) ◽  
pp. 22-35 ◽  
Author(s):  
Ricardo de Oliveira ◽  
Felipe Hudari ◽  
Jefferson Franco ◽  
Maria Zanoni
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Hair Dyes

Tetra-(N-Phenylpyrazole)-Porphyrin/β-Cyclodextrin Incorporated CNT Film Modified Hemoglobin Sensor

2011 ◽  
Vol 239-242 ◽  
pp. 2831-2834 ◽  
Author(s):  
Jing Lin He ◽  
Wei Zou ◽  
Jun Xia Wang ◽  
Li Hong Zeng ◽  
Zhong Cao ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Electrochemical Behavior ◽  
Response Mechanism ◽  
Hb Concentration ◽  
Excellent Selectivity

An electrochemical sensor modified with tetra-(N-phenylpyrazole)-porphyrin/b- cyclodextrin/carbon nanotube (TPPyPh/b-CD/CNT) film was fabricated for determination of hemoglobin (Hb) in this paper. The electrochemical behavior of the proposed sensor was investigated by cyclic voltammetry (CV). TPPyPh has been shown preferably for the fabrication of electrochemical sensor. The peak currents decreased significantly with the increase of the Hb concentration in solution. The response mechanism of TPPyPh/b-CD/CNT film for Hb was suggested to be based on the coordinated interaction between Hb and TPPyPh. It showed excellent selectivity for the determination of Hb in PBS.

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