Fabrication of a new electrochemical sensor based on Au Pt bimetallic nanoparticles decorated multi-walled carbon nanotubes for determination of diclofenac

Eteya, Muhaned Mohammed; Rounaghi, Gholam Hossein; Deiminiat, Behjat

doi:10.1016/j.microc.2018.09.009

Cited by 79 publications

(31 citation statements)

References 41 publications

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“…It can be noticed that the lowest limits of detection and quantification were reached when applying SWV, while the best sensitivities were achieved by the MPA technique. In comparison with other electrodes reported in the literature for voltammetric/amperometric detection of DCF [6,7,8,12], the F–CNF paste electrode exhibited enhanced electroanalytical performance regarding both sensitivity and the lowest limit of detection.…”

Section: Resultsmentioning

confidence: 73%

“…The monitoring of DCF concentration in aquatic environments necessitates analytical methods, from which several variants of chromatography are often used [4,5]. Also, for the quantitative determination of DCF, electrochemical methods and sensors have been reported [6,7,8,9,10,11,12,13], as electrochemical methods exhibit great potential for environmental monitoring because of their advantages of saving time, fast response, simplicity, low cost, and the avoidance of sample preparation.…”

Section: Introductionmentioning

confidence: 99%

“…In general, the direct detection of DCF using a bare electrode is appropriate only for relatively high concentrations of DCF, because the electrochemical response is poor owing to the low electron transfer during electrochemical oxidation on the electrode surface [6,7]. It is well-known that in order to enhance electrochemical performance, the effective strategy is to design a composite consisting of a highly electrocatalytic material and a substrate with good conductivity [12]. The exceptional electrical, chemical, and mechanical properties of carbon nanomaterials mean they have great potential in sensors applications, especially in composite form.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Electrochemical Response of Diclofenac at a Fullerene–Carbon Nanofiber Paste Electrode

Motoc

Manea

Orha

et al. 2019

Sensors

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The requirements of the Water Framework Directive to monitor diclofenac (DCF) concentration in surface water impose the need to find advanced fast and simple analysis methods. Direct voltammetric/amperometric methods could represent efficient and practical solutions. Fullerene–carbon nanofibers in paraffin oil as a paste electrode (F–CNF) was easily obtained by simple mixing and tested for DCF detection using voltammetric and amperometric techniques. The lowest limit of detection of 0.9 nM was achieved by applying square-wave voltammetry operated under step potential (SP) of 2 mV, modulation amplitude (MA) of 10 mV, and frequency of 25 Hz, and the best sensitivity was achieved by four-level multiple pulsed amperometry (MPA) that allowed in situ reactivation of the F–CNF electrode. The selection of the method must take into account the environmental quality standard (EQS), imposed through the “watchlist” of the Water Framework Directive as 0.1 µg·L−1 DCF. A good improvement of the electroanalytical parameters for DCF detection on the F–CNF electrode was achieved by applying the preconcentration step for 30 min before the detection step, which assured about 30 times better sensitivity, recommending its application for the monitoring of trace levels of DCF. The electrochemical behavior of F–CNF as a pseudomicroelectrode array makes it suitable for practical application in the in situ and real-time monitoring of DCF concentrations in water.

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Section: Resultsmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Electrochemical Response of Diclofenac at a Fullerene–Carbon Nanofiber Paste Electrode

Motoc

Manea

Orha

et al. 2019

Sensors

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“…Altai et al [78] developed a novel electrochemical sensor for the analysis of DCF based on f-MWCNTs and gold-platinum bimetallic nanoparticles modified gold electrode. Electrochemical properties of the fabricated sensor were evaluated by CV and DPV techniques in PBS having pH of 7.0, and the redox reaction at the electrode surface was found ADS controlled.…”

Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

An overview of recent developments of carbon-based sensors for the analysis of drug molecules

Pushpanjali

Manjunatha

Hareesha

2021

J. Electrochem. Sci. Eng.

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This review summarizes some recent developments in the fabrication of modified sensors and biosensors using carbon-based materials. The great potential of carbon-based electrodes as sensing platforms is exciting due to their unique electrical and chemical properties, high accessibility and high biocompatibility. Carbon-based materials are particularly interesting due to almost infinite possibility of their functionalization with a wide variety of organic molecules, biologically important compounds and pharmaceuticals. This review is specifically focused on recent developments in the utilization of various carbon-based electrodes in sensing devices for the electrochemical investigation of drug molecules. Various voltammetric techniques considered in this effort include linear sweep voltammetry (LSV), cyclic voltammetry (CV), differential pulse voltammetry (DPV), square wave voltammetry (SWV), and square wave adsorptive stripping voltammetry (SWAdSV). The carbon-based electrode materials considered in this review comprise carbon paste, carbon nanotubes, graphite, graphene, and glassy carbon. The analytes chosen are some routinely used drugs such as paracetamol (PC), diclofenac sodium (DCF), 5-fluorouracil (5-FU), cetirizine (CTZ) and salbutamol (SAL). All here reported sensing electrodes produced very good results in electrochemical investigations of these drug molecules.

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“…Nanoparticles provide large surface area for adsorption [21], increase sensitivity for molecule detection [22], tune magnetic [23] and optical properties [24]. For example, bismuth can change from a semi-metal to a semi-conductor which makes it very interesting among nanosized materials [25,26].…”

Section: Introductionmentioning

confidence: 99%

Differently substituted aniline functionalized MWCNTs to anchor oxides of Bi and Ni nanoparticles

et al. 2019

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We have studied the consequence of different functionalization types onto the decoration of multi-wall carbon nanotubes (MWCNTs) surface by nanoparticles of bismuth and nickel oxides. Three organic molecules were considered for the functionalization: 5-amino-1,2,3-benzenetricarboxylic acid, 4-aminobenzylphosphonic acid and sulfanilic acid. Nanotubes modification with in situ created diazonium salts followed by their impregnation with suitable salts [ammonium bismuth citrate and nickel (II) nitrate hexahydrate] utilizing infrared (IR) irradiation was found the crucial stage in the homogeneous impregnation of functionalized CNTs. Furthermore, calcination of these samples in argon environment gave rise to controlled decorated MWCNTs. The currently used technique is simple as well as effective. The synthesized materials were characterized by XPS, PXRD, FESEM, EDX, HRTEM and Raman spectroscopy. Bismuth oxide decorations were successfully performed using 5-amino-1,2,3-benzenetricarboxylic acid (particle size ranges from 1 to 10 nm with mean diameter ~ 2.4 nm) and 4-aminobenzylphosphonic acid (particle size ranges from 1 to 6 nm with mean diameter ~ 1.9 nm) functionalized MWCNTs. However, only 4-aminobenzylphosphonic acid functionalized MWCNTs showed strong affinity towards oxides of nickel nanoparticles (mainly in hydroxide form, particles size ranging from 1 to 6 nm with mean diameter ~ 2.3 nm). Thus, various functions arranged in the order of their increasing anchoring capacities are as follows: sulfonic < carboxylic < phosphonic. The method is valid for large-scale preparations. These advanced nanocomposites are potential candidates for various applications in nanotechnology.

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Fabrication of a new electrochemical sensor based on Au Pt bimetallic nanoparticles decorated multi-walled carbon nanotubes for determination of diclofenac

Cited by 79 publications

References 41 publications

Enhanced Electrochemical Response of Diclofenac at a Fullerene–Carbon Nanofiber Paste Electrode

Enhanced Electrochemical Response of Diclofenac at a Fullerene–Carbon Nanofiber Paste Electrode

An overview of recent developments of carbon-based sensors for the analysis of drug molecules

Differently substituted aniline functionalized MWCNTs to anchor oxides of Bi and Ni nanoparticles

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