Electrochemical Detection Of Rutin Research Articles

Electrochemical detection of rutin in black tartary buckwheat tea and related health-care pills with new ionic liquid-based supramolecular hydrogels

Electrochemical detection of rutin in black tartary buckwheat tea and related health-care pills with new ionic liquid-based supramolecular hydrogels

Synthesis of sulfonylcalix[4]arene complexes and research on electrochemical detection of rutin by the composites of the complexes with multi-walled carbon nanotubes

In this study, three sulfonylcalix[4]arene complexes of [Co2TBSC(en)3]·2CH3OH (Co-TBSC), [Mn2TBSC(DMA)2(en)2] (Mn-TBSC) and [Zn2TBSC(en)2] (Zn-TBSC) were synthesized by solvothermal method with sulfonylcalix[4]arene and three different metal salts. Then multi-walled carbon nanotubes (MWCNTs) was introduced into complexes to form composites of Co-TBSC/MWCNTs(1:2), Mn-TBSC/MWCNTs(1:2) and Zn-TBSC/MWCNTs(1:2), respectively. Various physical characterizations illustrated the successful preparation of three composites. The electrochemical properties of the composites were characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results show that they have good electrocatalytic activity and conductivity. The sensors based on the three composites were applied to determine the rutin under the optimal experimental conditions. The results showed that the detection ranges and limits of detection of three kinds of composites for detecting rutin were similar, but the sensitivities of Co-TBSC/MWCNTs(1:2) and Zn-TBSC/MWCNTs(1:2) (9.43 and 9.30 μA·μM−1) are larger than that of Mn-TBSC/MWCNTs(1:2) (5.34 μA·μM−1). Since the three composites were all obtained by mixing three complexes with MWCNTs in a mass ratio of 1:2, the different detection sensitivities may be caused by the different crystal structures of the complexes. The conclusion was further proved by density functional theory (DFT) calculation.

NiO/ZnO binary metal oxide based electrochemical sensor for the evaluation of hazardous flavonoid in biological and vegetable samples

Fabrication of binary transition metal oxide-based composite over the active surface area of glassy carbon electrode (GCE) stimulates the electrochemical activity due to their morphology, and higher active surface area, etc. The successful formation of (NiO/ZnO) composite has been scrutinized through various microscopic and spectroscopic techniques. Further, NiO/ZnO/GCE tends to exemplify exquisite kinetic performance with a higher electron transfer rate and charge transfer resistance (Rct) of 404 Ω. The electrochemical detection of Rutin (RT) on NiO/ZnO/GCE exemplifies a spacious linear range of 0.049 – 742.5 µM in linear sweep voltammetry (LSV) and differential pulse voltammetry (DPV). Moreover, the proposed NiO/ZnO/GCE sensor symbolizes Nanomolar level detection of RT (11.0 & 13.6 nM) in DPV and LSV with an appraisable sensitivity of 2.52 µA µM−1 cm−2 and 0.62 µA µM−1 cm−2, respectively. The practical feasibility analysis of the proposed NiO/ZnO/GCE sensor features exemplary selectivity, repeatability, reproducibility, and storage stability. On top of that, the real-time monitoring analysis demonstrates exquisite recovery results in blood and orange samples.

Simple synthesis of CoSn(OH)6 nanocubes for the rapid electrochemical determination of rutin in the presence of quercetin and acetaminophen

Schematic presentation of the synthesis of CoSn(OH)6 nanocubes modified with SPCE towards the electrochemical detection of rutin.

Electrochemical Detection of Rutin on Mg2Al‐Cl Layered Double Hydroxide Modified Carbon Ionic Liquid Electrode

AbstractIn this paper a Mg2Al‐Cl layered double hydroxide (Mg2Al‐LDH) modified carbon ionic liquid electrode (CILE) was prepared and further used for the electrochemical detection of rutin. Cyclic voltammograms of rutin on Mg2Al‐LDH/CILE were recorded with a pair of well‐defined redox peaks appeared in pH 2.5 phosphate buffer solution, which was ascribed to the electrochemical reaction of rutin. Due to the presence of Mg2Al‐LDH on the electrode surface, the redox peak currents increased greatly and the electrochemical parameters were calculated. Under the optimal conditions the oxidation peak current was proportional to rutin concentration in the range from 0.08 μmol L‐1 to 800.0 μmol L‐1 with the detection limit on 0.0255 μmol L‐1 (3σ). The fabricated electrode showed good reproducibility and stability, which was successfully applied to rutin tablet samples determination.

One-pot facile synthesis of platinum nanoparticle decorated reduced graphene oxide composites and their application in electrochemical detection of rutin

We report on the synthesis of platinum nanoparticle–reduced graphene oxide (PtNP–rGO) composites and their application as a novel architecture in electrochemical detection of rutin.

Electrochemical detection of rutin on nitrogen-doped graphene modified carbon ionic liquid electrode

In this paper nitrogen-doped graphene (NG) was synthesized and applied to modify an ionic liquid 1-hexylpyridinium hexafluorophosphate based carbon ionic liquid electrode (CILE). The fabricated NG/CILE exhibited excellent electrochemical performances. Electrochemical behaviors of rutin on NG/CILE were carefully investigated with a pair of well-defined redox peaks appeared, which was attributed to the presence of NG with electrocatalytic activity. Electrochemical parameters of rutin on NG/CILE were calculated with the values of charge transfer coefficient (α), electron transfer number (n) and electrode reaction standard rate constant (ks) as 0.57, 1.76 and 1.24s−1, respectively. Under the optimal conditions rutin could be detected in the concentration range from 7.0×10−10 to 1.0×10−5mol/L with the detection limit as 0.23nmol/L (3σ) by differential pulse voltammetry. The proposed method was further applied to the determination of rutin tablet samples with satisfactory results.

Electrochemical detection of rutin with a carbon ionic liquid electrode modified by Nafion, graphene oxide and ionic liquid composite

We report on a carbon ionic liquid electrode modified with a composite made from Nafion, graphene oxide and ionic liquid, and its application to the sensitive determination of rutin. The modified electrode was characterized by cyclic voltammetry and electrochemical impedance spectroscopy. It shows excellent cyclic voltammetric and differential pulse voltammetric performance due to the presence of nanoscale graphene oxide and the ionic liquid, and their interaction. A pair of well-defined redox peaks of rutin appears at pH 3.0, and the reduction peak current is linearly related to its concentration in the range from 0.08 μM to 0.1 mM with a detection limit of 0.016 μM (at 3σ). The modified electrode displays excellent selectivity and good stability, and was successfully applied to the determination of rutin in tablets with good recovery.