Methylene Blue/Multiwall Carbon Nanotube Modified Electrode for the Amperometric Determination of Hydrogen Peroxide

2011 ◽  
Vol 23 (10) ◽  
pp. 2290-2296 ◽  
Author(s):  
Roselyn C. Peña ◽  
Mauro Bertotti ◽  
Christopher M. A. Brett
Keyword(s):  
Hydrogen Peroxide ◽  
Methylene Blue ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Multiwall Carbon Nanotube ◽  
Amperometric Determination ◽  
Multiwall Carbon

Enhanced Electrocatalysis for the Reduction of Hydrogen Peroxide at New Multiwall Carbon Nanotube Grafted Polydiphenylamine Modified Electrode

2006 ◽  
Vol 18 (9) ◽  
pp. 894-903 ◽  
Author(s):  
Padmanabhan Santhosh ◽  
Kalayil Manian Manesh ◽  
Kwang-Pill Lee ◽  
Anantha Iyengar Gopalan
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon

Determination of Uric Acid and Norepinephrine by Chitosan-Multiwall Carbon Nanotube Modified Electrode

2005 ◽  
Vol 17 (10) ◽  
pp. 901-905 ◽  
Author(s):  
Guanghan Lu ◽  
Lingyan Jiang ◽  
Feng Song ◽  
Chuanyin Liu ◽  
Liping Jiang
Keyword(s):  
Uric Acid ◽  
Carbon Nanotube ◽  
Modified Electrode ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon

Multiwall carbon nanotube-modified electrode as a nanosensor for electrochemical studies and stripping voltammetric determination of an antimalarial drug

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14407-14415 ◽  
Author(s):  
Sayed Mehdi Ghoreishi ◽  
Abdol Mohammad Attaran ◽  
Atiyeh Moqadam Amin ◽  
Asma Khoobi
Keyword(s):  
Carbon Nanotube ◽  
Modified Electrode ◽  
Antimalarial Drug ◽  
Voltammetric Determination ◽  
Multiwall Carbon Nanotube ◽  
Electrochemical Studies ◽  
Multiwall Carbon

MWCNTs/CPE exhibited excellent effect towards the oxidation of hydroxychloroquine.

scholarly journals ELECTROCHEMICAL AND CHEMOMETRIC DETERMINATION OF DORZOLAMIDE AND TIMOLOL IN EYE DROPS USING MODIFIED MULTIWALL CARBON NANOTUBE ELECTRODE

2017 ◽  
Vol 9 (9) ◽  
pp. 43 ◽  
Author(s):  
Hassan A.m. Hendawy ◽  
Hanan M. Elwy ◽  
Amany M. Fekry
Keyword(s):  
Modified Electrode ◽  
Limit Of Detection ◽  
Partial Least Square ◽  
Least Square ◽  
Fractional Factorial ◽  
Great Promise ◽  
Multiwall Carbon Nanotube ◽  
Eye Drops ◽  
Multiwall Carbon

Objective: This work is focused on the construction of simple and sensitive electrochemical sensor for quantitative determination of dorzolamide (DOR) and timolol maleate (TIM). This method is based on the incorporation of multiwall carbon nanotubes (MWCNT) into the carbon paste electrode which improve the characteristics of the electrode.Methods: The electrochemical response of modified electrode was based on voltammetric oxidation, using cyclic voltammetry (CV) and impedance spectroscopy (EIS). The structural morphology of the surface modified electrode was characterized by scanning electron microscope (SEM). Quantitative analysis for each of the two compounds in a mixture has been examined by using of chemometric tools for resolving overlapping signals. The prediction performance of the chemometric method was analyzed by principal component regression (PCR) and partial least square (PLS).Results: Fractional factorial design was constructed from set of synthetic mixtures of two drugs in concentration ranges of 0.05 to 1.6µg/ml for DOR and 1.5-20 µg/ml for TIM. Under optimum experimental conditions, DOR and TIM gave rectilinear response over the concentration range of 0.072-1.88 µg/ml and 1.16-20.84 µg/ml, respectively. The limit of detection (LOD) was found to be 0.098 and 1.025 µg/ml, for DOR and TIM, respectively. It found that the % of relative prediction error (RPE) was acceptable and satisfactory.Conclusion: In these work, for the first time, a new voltammetric simultaneous method developed for a rapid and efficient determination of DOR and TIM from eye dropper sample at nano modified electrode with satisfactory results. These results indicate that MWCNT holds great promise in practical application.

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