Adsorptive Stripping Voltammetric Determination of 4‐Hexylresorcinol in Pharmaceutical Products Using Multiwalled Carbon Nanotube Based Electrodes

Abstract

A sensitive electroanalytical method is presented for the determination of 4-hexylresorcinol using adsorptive stripping voltammetry (AdsSV) at a multiwalled carbon nanotube modified basal plane pyrolytic graphite electrode (MWCNT-BPPGE). This method is also extended to the use of a MWCNT modified screen-printed electrode (MWCNT-SPE), thereby demonstrating that this approach can easily be incorporated into a facile and inexpensive electrochemical sensor

Simultaneous electrochemical determination of dopamine and acetaminophen using multiwall carbon nanotubes modified glassy carbon electrode

“…However, most of these methods face oxidation of biomolecule at electrode, fouling of electrode (due to adsorption of the oxidation products), unstable analytical signal [15], require high over potential, high detection limit, slow response and most of all are complex. The recent use of carbon nanotubes (CNTs) modified electrodes has revolutionalized the electrochemical techniques for the determination of biomolecules due to their exceptional properties [16][17][18][19] e.g. small dimensions, high mechanical strength [20], electric [21,22] and thermal behavior [23,24], biocompatibility, high stability, modifiable sidewalls [25][26][27][28], high surface area (creating a large interfacial region, which can have properties different from bulk material [29]), and are therefore best suited for almost any aspect of nanotechnology, including electronic and optoelectronic devices, biomedical, pharmaceutical, cosmetic, automotive, aeronautic and aerospace industries, catalytic, and analytical chemistry [30,31].…”

Glassy carbon electrode modified with multi-walled carbon nanotubes sensor for the quantification of antihistamine drug pheniramine in solubilized systems

“…Carbon nanotubes (CNTs) are most important nanomaterials due to their high mechanical strength [9] , high surface area [10] and high chemical stability [11] . Multi-walled carbon nanotubes (MWCNTs) are now considered important modifiers due to their ability to promote electron transfer in electrochemical reactions, improve sensitivity and chemical inertness [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , other modifier and different types of surfactants are also used for electrochemical studies [20] , [21] , [22] , [23] , [24] , [25] . In this study, glassy carbon electrode modified with multi-walled carbon nanotubes (GCE-MWCNTs) was fabricated to improve the limit of detection.…”

Uric Acid Determination by Adsorptive Stripping Voltammetry on Multiwall Carbon Nanotubes Based Screen‐Printed Electrodes

“…On the other hand, analytical methods based on voltammetric stripping techniques have been recently benefited from the unique properties of CNT modified electrodes 29. A stronger adsorption of many organic compounds on CNTs in comparison with conventional electrode materials has been recently used for the determination of quercetin 30, 31 paracetamol 32, antiretroviral drug Abacavir 33, 4‐hexylresorcinol 34 or methyldopa 35. Thus, in this paper it is reported the application of COOH functionalized MWCNT modified SPCEs for the detection of uric acid by adsorptive voltammetry.…”