Platinum- polydopamine @SiO2 nanocomposite modified electrode for the electrochemical determination of quercetin

Janakiraman, Manokaran; Rethinasabapathy, Muruganantham; Muthukrishnaraj, A.; Balasubramanian, N.

doi:10.1016/j.electacta.2015.04.016

Cited by 67 publications

(18 citation statements)

References 44 publications

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“…The FTIR spectrum of as-prepared core-shell SiO 2 @CoFe-PBA is shown in Figure S1.T he band at 2114 cm À1 couldb ei ndexed to the CN stretching (Co III -NC-Fe II ), [16] whereas the band at 1110cm À1 could be assigned to the Si-O-Si vibration. [17] Figures S2 and S3 show the XRD patternso fa s-prepared CoFe-PBA and core-shell SiO 2 @CoFe-PBA.T he Pawley fitting of these XRD patterns shows that the structure of each sample is in the same space group. The structural and crystallographic details are provided in Ta ble S1.T hese data indicate the successfulcoating of CoFe-PBA on the silica spheres.…”

Section: Resultsmentioning

confidence: 99%

“…The FTIR spectrum of as‐prepared core–shell SiO 2 @CoFe–PBA is shown in Figure S1. The band at 2114 cm −1 could be indexed to the CN stretching (Co III –NC–Fe II ), whereas the band at 1110 cm −1 could be assigned to the Si– O –Si vibration . Figures S2 and S3 show the XRD patterns of as‐prepared CoFe–PBA and core–shell SiO 2 @CoFe–PBA.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template

et al. 2018

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Herein, we report a novel method for the formation of hollow Prussian blue analogue (CoFe–PBA) nanocubes, using spherical silica particles as sacrificial templates. In the first step, silica cores are coated by a CoFe–PBA shell and then removed by etching with hydrofluoric acid (HF). The cubic shape of CoFe–PBA is well‐retained even after the removal of the silica cores, resulting in the formation of hollow CoFe–PBA cubes. The specific capacity of the hollow CoFe–PBA nanocubes electrodes is about two times higher than that of solid CoFe–PBA nanocubes as storage materials for sodium ions. Such an improvement in the electrochemical properties can be attributed to their hollow internal nanostructure. The hollow architecture can offer a larger interfacial area between the electrolyte and the electrode, leading to an improvement in the electrochemical activity. This strategy can be applied to develop PBAs with hollow interiors for a wide range of applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template

et al. 2018

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“…Because, at pH 2 and pH 5, hydroxyl groups of Qu and Lu were active along with catechol hydroxyl group. 16 However, there is still the overlap problem. To overcome this problem, hydro-alcoholic support electrolyte was used.…”

Section: Electrochemical Behaviors Of Quercetin and Luteolinmentioning

confidence: 99%

“…The interference of these common inorganic ions and organic compounds were investigated for the electrochemical analysis of Qu and Lu in previous reports. 16,20,24,[32][33][34] The tolerance limit was calculated as the maximum concentration of the interfering agent which caused an approximately ± 5% decrease in the oxidation peak currents of Qu and Lu or shift in the oxidation potential of Qu and Lu. Na + , K + , Cl -, NO 3 -, CO 3 2did not significantly influence the height of the oxidation peak currents of Qu and Lu.…”

Section: -mentioning

confidence: 99%

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Simultaneous determination of quercetin and luteolin in mate and white tea samples

Karaboduk¹,

Hasdemır²

2020

Rev.Roum.Chim.

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The chemical structures of quercetin and luteolin are quite similar; as a result, their oxidation peaks potential are close and interfere each other. To solve this problem, in this study, the simultaneous determination method of quercetin and luteolin has been developed on glassy carbon electrode (GCE) by using differential pulse voltammetry (DPV). 75% methanol (hydro-alcoholic) support electrolyte was used for this purpose. The peak potential difference between the quercetin and luteolin was at about 110 mV which was useful for the simultaneous electrochemical analysis of both species. The experimental parameters were optimized. Under optimized conditions, linearity was obtained in the ranges of 0.079-39.60 × 10-7 M and 39.60-148.50 × 10-7 M for quercetin, and 0.065-32.60 × 10-7 M and 32.60-122.50 × 10-7 for luteolin. The detection limits for quercetin and luteolin were 0.022 × 10-7 M and 0.018 × 10-7 M, respectively. Finally, the present method was employed for the simultaneous determination of quercetin and luteolin in the ethanol and methanol extracts of Mate and White tea samples, and the obtained results were verified by high performance liquid chromatography as a confirmatory method.

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Development of Aloe vera‐titanium oxide‐based ultrasensitive sensor for the quantification of quercetin

Raja

Annu

Jain

2020

Analytical Science Advances

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In the present work, a novel sensor developed for the quantification of quercetin (QRC) is being reported. Due to synergistic effects of Aloe vera and titanium oxide, voltammetric performance of the developed sensor (ALV‐TiO2/glassy carbon electrode) was greatly enhanced. The fabricated sensor was characterized by scanning electron microscopy, X‐ray diffraction, energy dispersive X‐ray, and electrochemical impedance spectroscopy. The sensor was applied to study electrochemical behavior of QRC using square wave voltammetry. Under optimal condition, the developed sensor exhibited a linear response in the range of 3.3 × 10−7 to 2.31 × 10−6 µM with a detection limit of 0.8 nM. The analytical utility of the proposed sensor was justified by applying it for the analysis of QRC in real samples.

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Platinum- polydopamine @SiO2 nanocomposite modified electrode for the electrochemical determination of quercetin

Cited by 67 publications

References 44 publications

Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template

Synthesis of Hollow Co–Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template

Simultaneous determination of quercetin and luteolin in mate and white tea samples

Development of Aloe vera‐titanium oxide‐based ultrasensitive sensor for the quantification of quercetin

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