Controlled electrochemical synthesis of yttrium (III) hexacyanoferrate micro flowers and their composite with multiwalled carbon nanotubes, and its application for sensing catechin in tea samples

Devadas, Balamurugan; Chen, Shen‐Ming

doi:10.1007/s10008-014-2715-5

Cited by 25 publications

(9 citation statements)

References 50 publications

(45 reference statements)

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“…Furthermore, they are amenable for miniaturisation and do not suffer from colour interference. Many different electrochemical methods have been developed in literature for the determination of polyphenols [15][16][17][18][19]. The most common electrochemical techniques for the determination of GA have been CV and differential pulse voltammetry (DPV), which were also used in this work.…”

Section: Introductionmentioning

confidence: 99%

The synergistic effect between graphene oxide nanocolloids and silicon dioxide nanoparticles for gallic acid sensing

Chikere

Faisal

Lin

et al. 2019

J Solid State Electrochem

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For the first time, the synergistic effect of graphene oxide nanocolloids (nano-GO) and silicon dioxide (silica) nanoparticles (SiO 2-nanoparicles) has been used to modify a glassy carbon electrode (GCE) for the determination of gallic acid (GA). The modified electrode surface was characterised by using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDXA) and Fourier transform infrared spectroscopy (FTIR). The electrochemical behaviour of the modified electrode was then studied, using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), showing that the electrode was sensitive to GA in a concentration range of 6.25 × 10 −6 to 1.0 × 10 −3 mol L −1 , with a correlation coefficient R 2 of 0.9956 and a limit of detection of 2.09 × 10 −6 mol L −1 (S/N = 3). The proposed method was successfully used for the determination of GA in red wine, white wine and orange juice, with recoveries of 102.3, 95.4 and 97.6%, respectively.

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Section: Introductionmentioning

confidence: 99%

The synergistic effect between graphene oxide nanocolloids and silicon dioxide nanoparticles for gallic acid sensing

Chikere

Faisal

Lin

et al. 2019

J Solid State Electrochem

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“…6 Both CoHCF and CuHCF nanoparticles can be synthesized through the coprecipitation in a solution containing Co 2+ or Cu 2+ and [Fe(CN) 6 ] 3− ions. 77 Especially, the similar structure of these MHCFs can form the basis for the synthesis of mixed MHCFs with a statistical distribution of nitrogen coordinated metal ions. 77 Especially, the similar structure of these MHCFs can form the basis for the synthesis of mixed MHCFs with a statistical distribution of nitrogen coordinated metal ions.…”

Section: Other Mhcfsmentioning

confidence: 99%

Electroactive ion exchange materials: current status in synthesis, applications and future prospects

Hao

Wang

et al. 2016

J. Mater. Chem. A

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Electroactive ion exchange materials (EIXMs) with unique electrochemically switched ion exchange function have been extensively applied in various fields including high value-added ion recovery, toxic ion removal, energy storage device and electrochimical ion sensor. In particular, the charge and discharge of EIXMs can be electrochemically controlled by external electric field or by redox agent while the charge balance is compensated via the ion exchange with electrolyte solution. To date, the discovered EIXMs mainly involve inorganic compounds with mixed-valence transition metals, organic conducting polymers and organic-inorganic hybrid materials. Compared with their bulk forms, nanostructured EIXMs have aroused considerable research interest recently owing to their unique properties such as larger surface area, better ion diffusion path and more excellent electron transfer property. In this article, the design principles and synthetic routes for the development of various nanostructured EIXMs and their applications in the fields of selective ion separation, supercapacitors and electrochemical ion sensors are reviewed. In addition, the main challenges and future prospects for the further development of high-performance EIXMs are discussed.

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“…Many foods contain substances possessing anti‐cancer activity due to their antioxidant properties and ability to form radicals . For instance, green tea contains high amount of catechin (>30 %), resulting in its chemopreventive properties and ability to decrease blood pressure and to reduce a risk of coronary heart diseases . Numerous methods are used for the quantitative analysis of catechin, among them such as spectrophotometry , chemoluminescence , high performance liquid chromatography , mass spectroscopy fluorescence analysis, chronocoulometry, gas chromatography and flow column electrolysis .…”

Section: Introductionmentioning

confidence: 99%

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

et al. 2019

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In this study, single walled carbon nanotubes (SWCNTs) were covalently functionalized by terminal ethynyl bearing subphthalocyanine (SubPc) to obtain a new hybrid material, viz. SWCNT‐SubPc (CS), via “click” reaction for the first time. The structural characterization and study of the electrochemical sensor properties of the CS hybrid material to catechin were carried out. A convenient and fast analytical method was offered for the determination of catechin. It was shown that the deposition of CS on the surface of a glassy carbon electrode (GCE) led to a 2.2 and 8‐fold increase in the differential pulse voltammetry (DPV) responses to catechin in Britton‐Robinson (BR) buffer solution (a pH of 3) in comparison with SWCNT‐modified and bare GCE, respectively. The dynamic range, detection and quantification limits of catechin were determined to be 0.1–1.5 μM, 13 nM and 43 nM, respectively. Selectivity of the suggested CS/GCE sensor was investigated on addition of a number of interfering metal ions, antioxidants and biomolecules. The applicability of the modified electrode for the detection of catechin in real tea samples such as green, rosehip fruit, Turkish and Indian black tea was demonstrated with the standard addition method. Along with the ease in fabrication and low prices, the proposed CS/GCE sensor was reproducible, selective, stable and sensitive to catechin in major types of tea samples.

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Controlled electrochemical synthesis of yttrium (III) hexacyanoferrate micro flowers and their composite with multiwalled carbon nanotubes, and its application for sensing catechin in tea samples

Cited by 25 publications

References 50 publications

The synergistic effect between graphene oxide nanocolloids and silicon dioxide nanoparticles for gallic acid sensing

The synergistic effect between graphene oxide nanocolloids and silicon dioxide nanoparticles for gallic acid sensing

Electroactive ion exchange materials: current status in synthesis, applications and future prospects

Direct and Fast Electrochemical Determination of Catechin in Tea Extracts using SWCNT‐Subphthalocyanine Hybrid Material

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