Graphenated polyaniline-doped tungsten oxide nanocomposite sensor for real time determination of phenanthrene

Tovide, Oluwakemi; Jaheed, Nazeem; Mohamed, Nurali; Nxusani, Ezo; Sunday, Christopher E.; Tsegaye, Abebaw; Ajayi, Rachel Fanelwa; Njomo, Njagi; Makelane, Hlamulo; Bilibana, Mawethu Pascoe; Baker, Priscilla; Williams, Avril; Vilakazi, Sibulelo; Tshikhudo, Robert; Iwuoha, Emmanuel I.

doi:10.1016/j.electacta.2013.12.134

Cited by 37 publications

(22 citation statements)

References 54 publications

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“…At a bare GCE, GCE/PANI, and GCE/PANI-NiO, a well-defined anodic peak was observed at 1540 mV, 1550 mV, and 1650 mV, respectively, corresponding to phenanthrene oxidation peak potential. This oxidation potential agreed closely with phenanthrene oxidation potential reported for some chemically modified electrodes [19,50]. Among the three electrodes, GCE/PANI-NiO gave the best current response (750 A) compared to the other electrodes, GCE/PANI (680 A) and bare GCE (390 A).…”

Section: (3)supporting

confidence: 88%

“…The result suggests a diffusion controlled electrode reaction [19,41]. In addition, with increasing scan rate, the peak potential ( ) shifts to more positive values and there is a linear correlation between the peak potential and the logarithm of scan rate (log V) (graph not shown).…”

Section: (3)mentioning

confidence: 96%

“…The oxidation state increases from completely reduced leucoemeraldine to emeraldine and to the fully oxidized form pernigraniline. However not all the possible PANI states are conductive; actually PANI emeraldine form is the only conductive form [19]. The first redox peak AA is due to the conversion of leucoemeraldine to emeraldine salt while the third redox peak CC is due to the conversion of emeraldine salt to pernigraniline form.…”

Section: Xrdmentioning

confidence: 99%

“…Pollutionfree environment is truly the desire of everyone. PAHs are among the organic pollutants that have been identified as teratogenic, mutagenic, and carcinogenic in nature [19]. They have dangerous effects on both aquatic organisms and human beings through natural and anthropogenic activities, which are generated from industrial, agricultural, and domestic waste.…”

Section: Introductionmentioning

confidence: 99%

“…We have been motivated to embark on this study by a number of reasons: (i) the easy synthesis and availability of nickel oxide (NiO), (ii) anticipated enhanced electrocatalysis due to the electronic interaction between the NiO nanoparticles and PANI nanofibers; (iii) the work of Tovide et al [19] that showed that Graphenated polyanilinedoped tungsten oxide nanocomposite can determine phenanthrene at picomolar concentration; (iv) the existence of a dearth of information on the use of PANI nanofiber towards oxidation of phenanthrene; and (v) recent work from our group that showed that nanocomposite of metal oxide nanoparticles with nanoporous carbon based materials can detect environmental analyte such as nitrite at low potential, high current response, and with good sensitivity [29].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Detection of Phenanthrene Using Nickel Oxide Doped PANI Nanofiber Based Modified Electrodes

Fayemi

Adekunle

Ebenso

2016

Journal of Nanomaterials

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A nickel oxide doped polyaniline nanofibers (PANI-NiO) based electrochemical sensor was constructed for detection of phenanthrene. Successful synthesis of PANI-NiO nanocomposite was confirmed with techniques such as SEM, XRD, EDX, FTIR, and UV-visible spectroscopy. The electrocatalytic oxidation of phenanthrene on PANI-NiO on modified glassy carbon electrode (GCE-PANI-NiO) was studied using cyclic voltammetry, square wave voltammetry, and impedance spectroscopy and discussed. Results showed that detection of phenanthrene was enhanced by the nanostructure of PANI-NiO film. The square wave voltammetry analysis shows a very low detection limit of 0.732 pM for phenanthrene with the linear range of 7.6 pM-1.4 × 10 −11 M. The Tafel value of 227 mVdec −1 suggests adsorption of phenanthrene oxidation intermediates on the GCE-PANI-NiO electrode. The GCE-PANI-NiO modified electrodes gave better performance towards phenanthrene in terms of current response, oxidation potential, current recovery, stability, and resistance to electrode fouling effects.

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Section: (3)supporting

confidence: 88%

Section: (3)mentioning

confidence: 96%

Section: Xrdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Electrochemical Detection of Phenanthrene Using Nickel Oxide Doped PANI Nanofiber Based Modified Electrodes

Fayemi

Adekunle

Ebenso

2016

Journal of Nanomaterials

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Effect of Catalytically Active Zinc Oxide−Carbon Nanotube Composite on Sensitive Assay of Desloratadine Metabolite

et al. 2019

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Desloratadine is one of the most effective second‐generation antihistamines and the electrochemical behavior of the active agent of desloratadine was investigated with a new nanosensor designed with the addition of zinc oxide and multiwalled carbon nanotube (ZnO : MWCNT) mixture on glassy carbon (GCE). By investigating and using cyclic, differential pulse and square wave voltammetry techniques with ZnO : MWCNT/GCE, it is planned to obtain information about quantification and mechanism of desloratadine. The efficiency of experimental parameters such as pH, scan rate, accumulation potential and time on the anodic response of desloratadine were studied. Differential pulse voltammetry was selected as assay method and under developed method and optimized conditions, the current showed linear dependence with concentration in the range between 2×10−8 and 8×10−6 M in pH 5.5 acetate buffer. The achieved limits of detection (LOD) and quantification (LOQ) are 0.769 nM and 2.56 nM respectively. Applicability of the methods was demonstrated by their implementation in pharmaceutical dosage forms of desloratadine and the accuracy, precision, selectivity, sensitivity, intra‐day and day‐to‐day reproducibility of the methods were clearly explored. Finally, this sensor was successfully applied on real sample as a selective, simple, reproducible, repeatable an electrochemical sensor.

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Polyaniline‐ZnO−NiO Nanocomposite Based Non‐enzymatic Electrochemical Sensor for Malathion Detection

2022

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An electrochemical sensor based on polyaniline-ZnOÀ NiO (PANI-ZnOÀ NiO) nanocomposite was developed for the non-enzymatic detection of malathion. The structure, surface morphology, and optical properties of the as-prepared nanocomposite were studied by XRD, FTIR, SEM, and UV-Vis spectroscopy. The electrochemical behavior of the nanocomposite based sensor was first evaluated through cyclic voltammetry (CV). Under optimum conditions, differential pulse voltammetry (DPV) was further utilized for malathion detection, which proved the PANI-ZnOÀ NiO/GCE electrode as an effective electrochemical sensor. The developed electrochemical sensor showed a low detection limit of 1.0 × 10 À 8 M with a wider linear range of 10 to 70 nM for malathion.

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Graphenated polyaniline-doped tungsten oxide nanocomposite sensor for real time determination of phenanthrene

Cited by 37 publications

References 54 publications

Electrochemical Detection of Phenanthrene Using Nickel Oxide Doped PANI Nanofiber Based Modified Electrodes

Electrochemical Detection of Phenanthrene Using Nickel Oxide Doped PANI Nanofiber Based Modified Electrodes

Effect of Catalytically Active Zinc Oxide−Carbon Nanotube Composite on Sensitive Assay of Desloratadine Metabolite

Polyaniline‐ZnO−NiO Nanocomposite Based Non‐enzymatic Electrochemical Sensor for Malathion Detection

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