Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru, Alexandra Virginia; Apetrei, Constantin

doi:10.3390/catal10060680

Cited by 49 publications

(29 citation statements)

References 271 publications

(247 reference statements)

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“…Cyclic voltammetry (CV) was used as detection method for the study of SPCEs electrochemical behavior in KCl, K 4 [Fe(CN) 6 ] and Phe solutions [58].…”

Section: Methodsmentioning

confidence: 99%

Voltammetric Determination of Phenylalanine Using Chemically Modified Screen-Printed Based Sensors

Dinu

Apetrei

2020

Chemosensors

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This paper describes the sensitive properties of screen-printed carbon electrodes (SPCE) modified by using three different electroactive chemical compounds: Meldola’s Blue, Cobalt Phthalocyanine and Prussian Blue, respectively. It was demonstrated that the Prussian Blue (PB) modified SPCE presented electrochemical signals with the highest performances in terms of electrochemical process kinetics and sensitivity in all the solutions analyzed. PB-SPCE was demonstrated to detect Phe through the influence it exerts on the redox processes of PB. The PB-SPCE calibration have shown a linearity range of 0.33–14.5 µM, a detection limit (LOD) of 1.23 × 10−8 M and the standard deviation relative to 3%. The PB-SPCE sensor was used to determine Phe by means of calibration and standard addition techniques on pure samples, on simple pharmaceutical samples or on multicomponent pharmaceutical samples. Direct determination of the concentration of 4 × 10−6–5 × 10−5 M Phe in KCl solution showed that the analytical recovery falls in the range of 99.75–100.28%, and relative standard deviations in the range of 2.28–3.02%. The sensors were successfully applied to determine the Phe in pharmaceuticals. The validation of the method was performed by using the FTIR, and by comparing the results obtained by PB-SPCE in the analysis of three pharmaceutical products of different concentrations with those indicated by the producer.

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“…Cyclic voltammetry (CV) was used as detection method for the study of SPCEs electrochemical behavior in KCl, K 4 [Fe(CN) 6 ] and Phe solutions [58].…”

Section: Methodsmentioning

confidence: 99%

Voltammetric Determination of Phenylalanine Using Chemically Modified Screen-Printed Based Sensors

Dinu

Apetrei

2020

Chemosensors

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“…During the next stage, the electrochemical behavior of SPEs in a solution containing 10 −3 M K 4 [Fe(CN) 6 ] dissolved in 10 −1 M PBS, pH = 7, was analyzed using cyclic voltammetry as the detection method [42]. The potential field in which the signal proved to be stable was between -0.4 and +0.7 V. In view of stabilizing the sensors, 5 cycles were registered in the solution to be analyzed.…”

Section: Electrochemical Properties Of the Electrodes In Electroactive Solutionmentioning

confidence: 99%

Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Munteanu

Apetrei

2021

IJMS

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The present study describes the electrochemical properties of three screen-printed electrodes (SPEs), the first electrode being carbon-based (C), the second graphene-based (GPH), and the third based on GPH modified with gold nanoparticles (GNP). These electrodes were used for the study of the electrochemical behavior of chlorogenic acid in different aqueous solutions, at pH = 7. In chlorogenic acid solution, a redox process was noticed in the case of all three electrodes; GPH and GNP significantly improved the sensor response regarding sensitivity and reversibility, a fact demonstrated by characterizing the sensor by cyclic voltammetry in potassium ferrocyanide, which corresponds to the exchange of two electrons and two protons. Moreover, the calibration curves for each sensor were developed, subsequently calculating the detection limits (LOD) and the quantification limits (LOQ). Low LOD and LOQ were obtained, the best—of the order of 10−7 M (LOD = 0.62 × 10−7 M; LOQ = 1.97 × 10−7 M)—being obtained in the case of GPH-GNP-SPE, which demonstrates that the method may be applied for determining chlorogenic acid in real samples. Thus, the sensors were successfully used for the quantitative determination of chlorogenic acid in three nutraceutical products. The validation of the results was done using the FTIR method. The results obtained by cyclic voltammetry were in accordance with those obtained by the spectrometric method, without significant differences from a statistical point of view.

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“…The general methods for graphene preparation, including graphite oxide reduction [ 24 ], liquid-phase exfoliation [ 25 ], electrochemical exfoliation [ 26 ], chemical vapor deposition (CVD) [ 27 ], and epitaxial growth [ 28 ], complicate the operational procedures and increase the process costs. Comparing with the conventional techniques, such as inkjet printing, conventional lithographic, layer-by-layer assembly, and screen printing [ 29 , 30 , 31 , 32 ], direct laser writing (DLW) technology is much more suitable for high-throughput and large-scale fabrication of inexpensively flexible graphene electronics due to the non-contact and maskless fabrication.…”

Section: Introductionmentioning

confidence: 99%

Direct Laser Writing of Transparent Polyimide Film for Supercapacitor

et al. 2020

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Direct laser writing (DLW) is a convenient approach for fabricating graphene-based flexible electronic devices. In this paper, laser-induced graphene was successfully prepared on a thin and transparent polyimide film through the DLW process. Experiments have demonstrated that interdigital thin film capacitor prepared by the DLW method has a high specific capacitance of 8.11 mF/cm2 and volume capacitance density of 3.16 F/cm3 (0.05 mA/cm2) due to the doped fluoride in the laser-induced graphene. The capacitance is about 20 times larger than the super-capacitor based non-transparent polyimide film of the same thickness. Owing to its thin, flexible, higher electrochemical characteristics, the transparent polyimide film is promising for integrating and powering portable and wearable electronics.

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Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Cited by 49 publications

References 271 publications

Voltammetric Determination of Phenylalanine Using Chemically Modified Screen-Printed Based Sensors

Voltammetric Determination of Phenylalanine Using Chemically Modified Screen-Printed Based Sensors

Electrochemical Determination of Chlorogenic Acid in Nutraceuticals Using Voltammetric Sensors Based on Screen-Printed Carbon Electrode Modified with Graphene and Gold Nanoparticles

Direct Laser Writing of Transparent Polyimide Film for Supercapacitor

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