Sensitive and selective voltammetric sensor based on polythiophene nanocomposite mixed MWCNT-G for the determination of Tartrazine

AL-Refai, Hanaa H.; Ganash, Aisha A.; Hussein, Mahmoud A.

doi:10.1016/j.synthmet.2021.116875

Cited by 15 publications

(15 citation statements)

References 61 publications

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“…One proton and one electron are assumed to be transferred in a single step. 2 A similar behavior has been observed in other chemicals, such as OH-substituted azo dyes. The electrochemical reaction that follows TRZ oxidation produces the appropriate deprotonated molecule.…”

Section: Synthesis Of F-cnfsupporting

confidence: 69%

“…Based on these results, NdVO 4 @F-CNF exhibits rapid electron-transfer ability during electrochemical oxidation. One proton and one electron are assumed to be transferred in a single step . A similar behavior has been observed in other chemicals, such as OH-substituted azo dyes.…”

Section: Resultsmentioning

confidence: 70%

“…The NdVO 4 @F-CNF-modified electrode show excellent electrochemical performance attributes responsible for the electrochemical determination of TRZ. The LOD is calculated using eq 2 41−44 = S LOD 3 B/S (2) where SB is the blank current and S is the slope value.…”

Section: Synthesis Of F-cnfmentioning

confidence: 99%

“…1 Azo dyes, which constitute about 70% of all synthetic colors and are strictly regulated due to the potential health risks posed by their aromatic ring structures and azo groups (N−N), are used in many synthetic dyes. 2 Azo dyes are the most widely used synthetic colorants. Water-based synthetic azo dyes appear in yellow and are used in foods for color confectionery, such as acid yellow no.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Synthetic colorants have many advantages over natural dyes, including saturated colors, increased stability, lower cost, and broader shades . Azo dyes, which constitute about 70% of all synthetic colors and are strictly regulated due to the potential health risks posed by their aromatic ring structures and azo groups (N–N), are used in many synthetic dyes . Azo dyes are the most widely used synthetic colorants.…”

Section: Introductionmentioning

confidence: 99%

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Neodymium(III) Vanadate-Decorated Functionalized Carbon Nanofiber Nanocomposite: An Electrochemical Tool for Tartrazine Monitoring

Radha,

Wang

2023

ACS Appl. Nano Mater.

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Human health is adversely affected by the excessive consumption of substances such as food colorants, exposure to metal ion dosages, antibiotic residues, and pesticide residues above the maximum tolerated levels. Among them, the synthetic food dye tartrazine (TRZ), widely used in various foods, is harmful to human health because of its pathogenicity and toxicity. Neodymium vanadate (NdVO4) nanoparticles embedded in functionalized carbon nanofiber (F-CNF)-modified electrodes serve as sensitive electrodes for TRZ detection. Neodymium is a rare-earth metal with a significant advantage over other rare-earth metals in electrochemical redox reactions. Furthermore, fast electron mobility for well-defined current potentials and well-separated peaks suggests that NdVO4 has an increased active surface area. The modified NdVO4@F-CNF/GCE exhibits a smaller semicircle value R ct = 20.1 Ω·cm2 and a lower cyclic voltammetry peak-to-peak separation of ΔE p = 98 mV in the redox probe. The NdVO4@F-CNF-modified GCE exhibited a higher current response of I pa = 17.05 μA at a peak potential of E pa = 0.69 V (vs Ag/AgCl). The nanocomposite is therefore chosen as an astounding detecting candidate due to the addition of F-CNF, which exhibits a significant improvement in electronic conductivity. Under optimal conditions, the sensor has a low detection limit (0.0011 μM) with a linear response of the 0.05–271.6 μM concentration range of TRZ. NdVO4@F-CNF was used to investigate the electrochemical sensing of TRZ in orange juice and orange jelly samples.

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Section: Synthesis Of F-cnfsupporting

confidence: 69%

Section: Resultsmentioning

confidence: 70%

Section: Synthesis Of F-cnfmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Neodymium(III) Vanadate-Decorated Functionalized Carbon Nanofiber Nanocomposite: An Electrochemical Tool for Tartrazine Monitoring

Radha,

Wang

2023

ACS Appl. Nano Mater.

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Modified Electrochemical Sensors for the Detection of Selected Food Azo Dyes: A Review

Cardenas‐Riojas,

Calderon‐Zavaleta,

Quiroz‐Aguinaga

et al. 2023

ChemElectroChem

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There are plenty of evidence that consuming high levels of azo dyes, such as Tartrazine, Sunset Yellow, Allura Red, Ponceau 4R, Amaranth, Sudan, and Azorubine, is associated with serious health problems. Therefore, electrochemical sensors have been developed for their effective detection, also offering low cost, portability, and the fact that they do not require harmful solvents. They are customarily employed in several electrochemical techniques, including cyclic voltammetry, differential pulse voltammetry, and square wave voltammetry. The most commonly employed materials in the manufacturing of electrochemical sensors are carbonaceous materials given their high stability, surface area, and conductivity. Employing these carbonaceous materials results in an enhanced sensitivity of electrochemical sensors when detecting azo dyes. To further improve the sensors, these materials are modified with metal oxides, polymers, polysaccharide, ionic liquids, and metal nanoparticles, allowing the detection of ultra‐sensitive traces of azo dyes. Therefore, this review provides an overview of the characteristics of modified carbonaceous materials and their applications for the detection of food azo dyes, along with a summary of the currently employed electroanalytical detection methods. Additionally, this review discusses the development of novel nanomaterials and their technological advances, while exploring their potential environmental and health impacts within the food industry.

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Sulfur-rich carbon quantum dots based on Alternanthera philoxeroides and thiourea for the detection of tartrazine

et al. 2022

J Mater Sci: Mater Electron

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Sensitive and selective voltammetric sensor based on polythiophene nanocomposite mixed MWCNT-G for the determination of Tartrazine

Cited by 15 publications

References 61 publications

Neodymium(III) Vanadate-Decorated Functionalized Carbon Nanofiber Nanocomposite: An Electrochemical Tool for Tartrazine Monitoring

Neodymium(III) Vanadate-Decorated Functionalized Carbon Nanofiber Nanocomposite: An Electrochemical Tool for Tartrazine Monitoring

Modified Electrochemical Sensors for the Detection of Selected Food Azo Dyes: A Review

Sulfur-rich carbon quantum dots based on Alternanthera philoxeroides and thiourea for the detection of tartrazine

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