Sensitive Determination of Terbutaline Using a Platform Based on Nanoparticles of Europium Oxide and Carbon Nanotubes

Abstract

This study presents a sensitive voltammetric determination of terbutaline (TER) on a platform based on carbon nanotubes (CNTs) and europium oxide nanoparticles (Eu2O3NPs) coated glassy carbon electrodes (GCEs). An ultrasonic bath was performed for the preparation of composite material. The material was characterized by energy dispersive X‐ray spectroscopy (EDX), X‐ray diffraction method (XRD) and scanning electron microscopy (SEM). The Eu2O3NPs/CNTs/GCE system was assessed for the oxidation of terbutaline (TER). A broad oxidation peak was appeared at 0.71 V using a bare GCE. However, the voltammetry of TER has been improved at a GCE coated with CNTs and a well‐defined anodic peak exhibited at 0.61 V. Furthermore, the nanoparticles of Eu2O3 and CNTs coated GCE has greatly improved the electrochemical behaviour of TER and a sharp peak was appeared at 0.59 V. Cyclic voltammetry at Eu2O3NPs/CNTs/GCE also reveals a high catalytic effect for the oxidation of TER with an oxidation peak that is distinctly enhanced compared to GCE and CNTs/GCE. Eu2O3 nanoparticles were utilized to enhance the surface area of GCE and then improve the sensitivity of the procedure. The response of TER was linear over a concentration range of 2.0×10−8 M −9.5×10−6 M with an LOD of 3.7×10−9 M. Square wave voltammetric analysis of tablets by Eu2O3NPs/CNTs/GCE yielded a recovery of 99.2 % with an RSD% of 3.2. The modified electrode (EuO2NPs/CNTs/GCE) provides accuracy and precision to the analysis of samples.

Development of a voltammetric method of analysis using praseodymium oxide‐carbon nanotubes for the sensitive detection of dopamine in the presence of tramadol, paracetamol and ascorbic acid

“…Voltammetric platforms represented interesting alternatives for the analysis of samples enabled increased sensitivities, decreased overpotentials and lower detection limits due to large electroactive surface area and made the modified electrodes much superior to those of conventional electrodes [10][11][12]. In addition, modified electrodes constructed with metallic oxide nanoparticles and carbon nanotubes enable excellent performances in sensing applications [13][14][15][16]. For instance, a voltammetric platform based on a composite of carbon nanotubes and gold nanoparticles were developed an excellent sensing platform at a nano-molar level detection [17].…”

A Hafnium Oxide Based Voltammetric Platform for the Sensitive Determination of Octopamine

“…However, nanostructured voltammetric sensors provide higher masstransport, increased surface area and fast electron transfer compared to unmodified electrodes [22][23][24]. In addition, electrochemical sensors prepared with materials such as metallic oxide nanoparticles and carbon nanotubes have also exhibited good stability, excellent reproducibility, great electrocatalytic effect and low limits of detection when used in sensing applications [25,26]. Hafnium oxide (HfO 2 ) has been shown to have excellent chemical properties, chemical stability, high dielectric constant and optical properties which make hafnium oxide an excellent candidate in microelectronic devices [27,28].…”

Sponge-like europium oxide from hollow carbon sphere as a template for an anode material for Reactive Blue 52 electrochemical degradation

“…The linear response range of the optimized composite material was almost two orders of magnitude, while they achieved a terbutaline detection limit of 3.7 nM. [22] Moreover, Rajaji and colleagues fabricated a graphene oxide decorated with Eu2O3, improved by microwave treatment, to detect chloramphenicol. They applied screen-printed carbon electrodes for detection of this commonly used antibiotic in honey and milk samples at fascinating 1.3 nM.…”