Carvacrol electrochemical reaction characteristics on screen printed electrode modified with La2O3/Co3O4 nanocomposite

Abstract

<p style="margin: 0in 0in 0pt; text-align: justify; line-height: 200%; unicode-bidi: embed; direction: ltr;"><span lang="EN-US">Electrochemical characteristics of carvacrol were investigated on a screen-printed electrode (SPE) modified with La<sub>2</sub>O<sub>3</sub>/Co<sub>3</sub>O<sub>4</sub> nanocomposite by using voltammetric techniques, which displayed a well-defined peak for sensitive carvacrol determination in phosphate buffer solution (PBS) at pH 7.0. La<sub>2</sub>O<sub>3</sub>/Co<sub>3</sub>O<sub>4</sub> nanoparticles demonstrated suitable catalytic activity for carvacrol determination by differential pulse voltammetry (DPV) technique. Besides, determination of carvacrol in a real samples was recognized in the light of electrochemical findings and a validated voltammetric technique for quantitative analysis of carvacrol in a real formulation was proposed. The DPV peak currents were found to be linear in the concentration range of 10.0 to 800.0 μM. The limit of detection (LOD) was found to be 1.0 μM.</span></p>

La2O3/Co3O4 nanocomposite modified screen printed electrode for voltammetric determination of sertraline

“…[13][14][15] However, because of the poor electrochemical behaviour of the most of electro--active analytes, low reducibility, sensitivity and high over potential at electrodes, the performance of the electrodes in electrochemical methods can be improved if they were modified by various nanomaterials and methodologies. [16][17][18][19][20][21][22][23][24][25][26][27] Nanostructured materials are one of the most promising supporting materials for surface modification of electrodes, due to their unique properties, such as good biocompatibility, high surface-to-volume ratio, substantial mechanical power and electrical properties. Lanthanum (La) is one of the most important lanthanide elements.…”

“…Metal oxide nanoparticle that are used for modification of electrodes, have some distinct advantages such as low influence of the solution resistance, high mass transport rate, low detection limits and better signal-to-noise ratio compared to the conventional electrodes. 28 Based on our previous reports that La 2 O 3 /Co 3 O 4 /SPE used for determination of carvacrol 29 and cabergoline, 30 in this work, a simple and low cost electrochemical sensor based on modification of screen printed electrode using La 2 O 3 / /Co 3 O 4 nanocomposite was proposed and used for determination of sertraline within real samples.…”

La(OH)3 nanoparticles immobilized on Fe3O4@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

“…04-0856). 17,18,23 The observed peaks show that the structure of Fe 3 O 4 and La(OH) 3 have not changed during the composition process.…”

Electrode Based on the MWCNTs and Electropolymerized Thymolphthalein for the Voltammetric Determination of Total Isopropylmethylphenols in Spices

“…Various types of electrode surface modifiers have been developed for the improvement of the isopropylphenols determination sensitivity. Carbon nanomaterials (multi- [ 43 , 44 , 45 ] and single-walled carbon nanotubes [ 46 ], graphene oxide nanosheets [ 47 ]), metal oxide nanoparticles (CeO 2 nanoparticles in combination with graphene [ 48 ] and Brij ® 35 micellar medium [ 49 ], La 2 O 3 /Co 3 O 4 nanocomposite [ 50 ]), monodisperse Ag@C@Ag core-double shell spheres [ 51 ], and MnY nanozeolite [ 52 ] have been successfully used as sensing layers of electrodes for thymol and carvacrol. Thymol is more often studied compared to carvacrol.…”