Simple self-referenced ratiometric electrochemical sensor for dopamine detection using electrochemically pretreated glassy carbon electrode modified by acid-treated multiwalled carbon nanotube

2019 ◽  
Vol 851 ◽  
pp. 113446 ◽  
Author(s):  
Luyao Wang ◽  
Yong Wang ◽  
Qianfen Zhuang
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Multiwalled Carbon Nanotube ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Dopamine Detection

An electrochemical sensor based on the composite of molybdenum carbides and a multiwalled carbon nanotube modified electrode for the ultrasensitive detection of rifampicin

2018 ◽  
Vol 10 (29) ◽  
pp. 3594-3601 ◽  
Author(s):  
Qing Huang ◽  
Xiaokun Li ◽  
Suxiang Feng ◽  
Wenfeng Zhuge ◽  
Fengping Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Multiwalled Carbon Nanotube ◽  
Ultrasensitive Detection ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Multiwalled Carbon ◽  
Molybdenum Carbides

The composite of molybdenum carbides and multiwalled carbon nanotube (MWCNTs–Mo2C) modified glassy carbon electrode (GCE) was developed to prepare an electrochemical sensor for the ultrasensitive detection of rifampicin.

Multiwalled carbon nanotube/sulfanyl porphyrazine hybrids deposited on glassy carbon electrode — effect of nitro peripheral groups on electrochemical properties

2017 ◽  
Vol 21 (04-06) ◽  
pp. 295-301 ◽  
Author(s):  
Michal Falkowski ◽  
Tomasz Rebis ◽  
Jaroslaw Piskorz ◽  
Lukasz Popenda ◽  
Stefan Jurga ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Properties ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Aqueous Media ◽  
Differential Pulse ◽  
Multiwalled Carbon Nanotube ◽  
Carbon Electrode ◽  
Multiwalled Carbon

We report on the synthesis, MS, UV-vis, NMR, HPLC and electrochemical characterization of magnesium sulfanyl porphyrazine with 2-[2-(4-nitrophenoxy)ethoxy]ethylsulfanyl substituents in the periphery. The electrochemical properties of novel macrocycle were studied by cyclic voltammetry and differential pulse voltammetry in non-aqueous electrolyte. The experimental data indicated the occurrence of clearly defined four redox couples corresponded to one-electron reactions of the [Formula: see text]-conjugated porphyrazine ring and substituents in the periphery. Multiwalled carbon nanotube/sulfanyl porphyrazine hybrids deposited on a glassy carbon electrode allowed for the evaluation of the effect of nitro peripheral groups on the electrochemical properties. The electrochemical behavior of immobilized nitro porphyrazine was consistent with the reduction mechanism for the various arylnitro compounds in aqueous media, with two processes characteristic of the redox transitions of the arylnitro group to the corresponding arylhydroxylamine and/or arylhydroxylamine–arylnitroso groups.

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