Multiwalled carbon nanotube-4-tert-butyl calix[6]arene composite electrochemical sensor for clenbuterol hydrochloride determination by means of differential pulse adsorptive stripping voltammetry

2012 ◽  
Vol 42 (11) ◽  
pp. 979-987 ◽  
Author(s):  
Reena R. Gaichore ◽  
Ashwini K. Srivastava
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Sensor ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Multiwalled Carbon Nanotube ◽  
Adsorptive Stripping Voltammetry ◽  
Multiwalled Carbon ◽  
Tert Butyl ◽  
Clenbuterol Hydrochloride

Development of Multiwalled Carbon Nanotube Based Electrochemical Sensor for Reactive Azo Dyes

2013 ◽  
Vol 678 ◽  
pp. 321-325
Author(s):  
Munirathinam Valarmathi ◽  
Anandhan Gomathi ◽  
Paramasivam Manisankar
Keyword(s):  
Carbon Nanotube ◽  
Azo Dyes ◽  
Surface Characterization ◽  
Limit Of Detection ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Reactive Azo Dyes

Two reactive azo dyes Reactive yellow 84 (RY84) and Reactive Red 120 (RR120) were investigated voltammetrically using plain glassy carbon electrode (GCE) and multiwalled carbon nanotube modified GCE (MWCNT/GCE). Influence of pH, scan rate and concentration on voltammograms were studied. The irreversible oxidation process observed for both dyes was adsorption controlled. The surface characterization of the modified electrode in the absence and presence of dyes was done using scanning electron microscopy (SEM). A systematic study of the experimental parameters that affects differential pulse stripping voltammetry (DPSV) was carried out and the optimized experimental conditions were arrived. Under optimized conditions, stripping voltammetry procedure was developed for the determination of reactive dyes. MWCNT/GCE seems to present better responses than plain GCE and the limit of detection (LOD) was 0.6 μg mL-1 for RY84 and 0.3μg mL-1 for RR120 on this modified system. Suitability of the differential pulse stripping voltammetric method using the developed Multiwalled carbon nanotube based sensor, for the trace determination of these textile dyes in real samples was also realized.

scholarly journals Electrochemical detection and quantification of gingerol species in ginger (Zingiber officinale) using multiwalled carbon nanotube modified electrodes

The Analyst ◽  
2016 ◽  
Vol 141 (22) ◽  
pp. 6321-6328 ◽  
Author(s):  
Korbua Chaisiwamongkhol ◽  
Kamonwad Ngamchuea ◽  
Christopher Batchelor-McAuley ◽  
Richard G. Compton
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Detection ◽  
Modified Electrodes ◽  
Stripping Voltammetry ◽  
Zingiber Officinale ◽  
Electrochemical Determination ◽  
Multiwalled Carbon Nanotube ◽  
Adsorptive Stripping Voltammetry ◽  
Multiwalled Carbon ◽  
Detection And Quantification

Electrochemical determination and quantification of gingerol species by adsorptive stripping voltammetry.

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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