Taraxacum-like Mg-Al-Si@porous carbon nanoclusters for electrochemical rutin detection

Rutin (RU) is one of the best-known natural antioxidants with various physiological functions in the human body and other plant species. In this work, an efficient voltammetric sensor to detect RU in food samples was explicated using a poly (glutamic acid)-modified graphene paste electrode (PGAMGPE). In order to detect RU, the proposed sensor diminishes material resistance and overpotential while increasing kinetic rate, peak currents, and material conductance. Using differential pulse voltammetry (DPV) and cyclic voltammetry (CV), the analysing efficiency of a PGAMGPE and a Bare graphene paste electrode (BGPE) was evaluated in 0.2 M phosphate buffer (PB) at an ideal pH of 6.5. in a potential window of −0.25 V to 0.6 V. Electrochemical impedance spectroscopy (EIS) was used to analyse the prepared electrode materials’ conductivity, charge transfer resistance, and the kinetics of electron transport. Field emission scanning electron microscopy (FE-SEM) images were considered to compare the exterior morphology of the PGAMGPE and the BGPE. It was discovered that the PGAMGPE and the BGPE have electroactive surfaces of 0.062 cm2 and 0.04 cm2, respectively. It was determined that two protons and two electrons participated in the redox process. The resultant limit of detection (LOD) was found to be 0.04 µM and 0.06 µM, respectively, using DPV and CV methods. In spite of common interferents such as metal ions and chemical species, the developed sensor’s selectivity for RU detection was impressive. For the simultaneous analysis of RU in the presence of caffeine (CF), the PGAMGPE affords a good electrochemical nature for RU with good selectivity. Due to the good stability, repeatability, reproducibility, and ease of use of the present RU sensor, it is useful for real sample analysis such as food and medicinal samples with recovery ranging from 94 to 100%.

Section: Resultssupporting

confidence: 58%

Electrochemical Polymerisation of Glutamic Acid on the Surface of Graphene Paste Electrode for the Detection and Quantification of Rutin in Food and Medicinal Samples

et al. 2022

“…As it is clear, Ipa decreases with decreasing rutin concentration, and nally reaches a minimum at a concentration of 100 nM, and there is almost no current at concentrations below 100 nM. In general, it can be said that the detection limit of the proposed sensor is 100 nM rutin, which is almost a competitive and appropriate value compared to previous works [13,[35][36][37][38][39]. This good sensitivity results can be related to the synergistic effect between rGO and NiFe 2 O 4 nanoparticles.…”

Section: Quantitative Analysis Of Rutin By Dpvmentioning

confidence: 60%

Electrochemical determination of rutin by using NiFe2O4 nanoparticles loaded reduced graphene oxide

Salarizadeh

2021

Preprint

A binary transition metal oxide based on nickel and iron (NiFe2O4) and hybridization of this nanomaterial with reduced graphene oxide (rGO) are synthesized by the hydrothermal method. X-ray diffraction (XRD), and Raman spectroscopy confirm the successful synthesis of these materials. Also, scanning electron microscope (SEM) and transmission electron microscope (TEM) images illustrated the particle morphology with the particle size of 20 nm. The synthesized material is then examined as a sensor on the surface of the glassy carbon electrode to detect a very small amount of rutin .Some electrochemical tests such as cyclic voltammetry, differential pulse voltammetry, impedance spectroscopy indicate the remarkable accuracy of this sensor and its operation in a relatively wide range of concentration of rutin (100 nM-100 µM). Considering the very good results, it seems the NiFe2O4-rGO can be considered as a new proposal in the development of accurate and inexpensive electrochemical sensors.

“…As it is clear, Ipa decreases with decreasing rutin concentration, and finally reaches a minimum at a concentration of 100 nM, and there is almost no current at concentrations below 100 nM. In general, it can be said that the detection limit of the proposed sensor is 100 nM rutin, which is almost a competitive and appropriate value compared to previous works [ 13 , 45 – 49 ]. The good sensitivity results can be related to the synergistic effect between rGO and NiFe 2 O 4 nanoparticles.…”

Section: Effect Of Scan Rate On Rutin Detectionmentioning

confidence: 60%

Electrochemical determination of rutin by using NiFe2O4 nanoparticles-loaded reduced graphene oxide

Salarizadeh

J Mater Sci: Mater Electron

2021

A binary transition metal oxide containing nickel and iron (NiFe 2 O 4 ) and hybridization of this nanomaterial with reduced graphene oxide (rGO) are synthesized by the hydrothermal method. X-ray diffraction (XRD) and Raman spectroscopy confirm the successful synthesis of these materials. Also, scanning electron microscope (SEM) and transmission electron microscope (TEM) images illustrated the particle morphology with the particle size of 20 nm. The synthesized material is then examined as a sensor on the surface of the glassy carbon electrode to detect a very small amount of rutin. Some electrochemical tests such as cyclic voltammetry, differential pulse voltammetry (DPV), and impedance spectroscopy indicate the remarkable accuracy of this sensor and its operation in a relatively wide range of concentrations of rutin (100 nM-100 µM). The accuracy of the proposed electrochemical sensors is approximately 100 nM in 0.1 M PBS, (pH = 3) which is relatively impressive and can be reported. Also, the stability rate after 100 DPV was about 95 %, which is a considerable and relatively excellent value. Considering the very good results, it seems that the NiFe 2 O 4 -rGO can be considered as a new proposal in the development of accurate and inexpensive electrochemical sensors.