Voltammetric determination of folic acid at physiological pH values by using a glassy carbon electrode modified with a multilayer composite consisting of polyoxometalate (H8P2Mo16V2O62) and reduced graphene oxide and prepared via layer-by-layer self-assembly and in-situ photoreduction

Xu, Hengbin; Bai, Zhenyuan; Wang, Guangning; O’Halloran, Kevin P.; Tan, Lichao; Pang, Haijun; Ma, Huiyuan

doi:10.1007/s00604-017-2447-1

Cited by 20 publications

(9 citation statements)

References 35 publications

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“…Glucose amperometric biosensors, based on the immobilization of the glucose oxidase enzyme (GOx) on POM-hybrid composites, have been reported in the literature ( Turdean et al, 2002 ; Turdean and Popescu, 2012 ; Yang et al, 2016a ; Boussema et al, 2018 ; Xu et al, 2017 ), and are listed in Table 4 . However, the best sensor performance for glucose detection was achieved by Ayranci et al (2019 ) with a non-enzymatic electrochemical sensor.…”

Section: Polyoxometalates Functionalized Sensorsmentioning

confidence: 99%

Polyoxometalate Functionalized Sensors: A Review

2022

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Polyoxometalates (POMs) are a class of metal oxide complexes with a large structural diversity. Effective control of the final chemical and physical properties of POMs could be provided by fine-tuning chemical modifications, such as the inclusion of other metals or non-metal ions. In addition, the nature and type of the counterion can also impact POM properties, like solubility. Besides, POMs may combine with carbon materials as graphene oxide, reduced graphene oxide or carbon nanotubes to enhance electronic conductivity, with noble metal nanoparticles to increase catalytic and functional sites, be introduced into metal-organic frameworks to increase surface area and expose more active sites, and embedded into conducting polymers. The possibility to design POMs to match properties adequate for specific sensing applications turns them into highly desirable chemicals for sensor sensitive layers. This review intends to provide an overview of POM structures used in sensors (electrochemical, optical, and piezoelectric), highlighting their main functional features. Furthermore, this review aims to summarize the reported applications of POMs in sensors for detecting and determining analytes in different matrices, many of them with biochemical and clinical relevance, along with analytical figures of merit and main virtues and problems of such devices. Special emphasis is given to the stability of POMs sensitive layers, detection limits, selectivity, the pH working range and throughput.

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Section: Polyoxometalates Functionalized Sensorsmentioning

confidence: 99%

Polyoxometalate Functionalized Sensors: A Review

2022

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“…In recent years, electrochemical methods and particularly voltammetry, have attracted significant attention due to their benefits like sensitivity, simplicity, low cost, accuracy and selective specification of electroactive species [15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In addition, the usage of electrochemical approaches towards detection of FA is generally promising because FA is the electrochemically active compound [29,30].…”

Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

A novel vitamin B9 sensor based on modified screen-printed electrode

Sarhadi

Zare

2020

J. Electrochem. Sci. Eng.

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In the field of determination of vitamin B9 (folic acid, FA), we have described the development of a sensitive electrochemical sensor through promoting the screen-printed electrode (SPE) and taking the advantage of zinc ferrite magnetic nanoparticles (ZnFe2O4MNPs). Cyclic voltammetry (CV) experiments demonstrated the powerful activity of ZnFe2O4MNPs/SPE for electrooxidation of FA by showing the prominent oxidation peak at 600 mV vs. Ag/AgCl. By differential pulse voltammetry (DPV) measurements, a linear relation between current response and concentration of vitamin B9 was determined in the range of 1.0–100.0 µM, and detection limit is found to be 0.3 µM (S/N=3). Except high sensitivity, the developed sensor demonstrated high stability, reproducibility and repeatability, and was also successfully applied to specify FA in real samples of vitamin B9 tablets and human urine.

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“…Deficiency of FA is a key aim for health goals that can decrease the risk of neural tube defects (NTDs) [8], leukopenia, neurosis, lightheadedness, gigantocytic, anemia, devolution of mentality, and psychosis of heart attack and stroke resulting from a lack of FA. On the other hand, a lack of FA will cause critical complications during pregnancy which can result in malformations of the spine, brain, and skull [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Folic Acid Determination in Food Samples Using Green Synthesized Copper Oxide Nanoparticles and Electro-Poly (Methyl Orange) Sensor

et al. 2022

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Copper (II) oxide nanoparticles (CuONPs) were green synthesized using Ocimum basilicum leaves aqueous extract in which polyphenols act as reducing and stabilizing agents. The synthesized CuONPs were characterized using X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, selected area electron diffraction, and Brunauer–Emmett–Teller (BET) surface area analysis. The analyses indicated the formation of crystalline rod-like monoclinic pure CuONPs with a mean grain size of 15 nm, a surface area of 396 m2 g−1, and a total pore volume of 0.71 cm3 g−1. A glassy carbon electrode (GCE) was modified using the synthesized CuONPs and electropolymerized poly(methyl orange) (PMO). The modified PMO/CuONPs/GCE electrode was electrochemically characterized and applied for the estimation of folic acid (FA) by cyclic voltammetry, chronoamperometry, linear sweep voltammetry, and differential pulse voltammetry techniques. The influence of pH (7), scan rate (50 mV/s), supporting electrolyte (0.1 M KCl) and FA concentration has been optimized. FA is precisely determined in the range from 0.01 to 1.5 µΜ with a low detection limit (0.002 µΜ), a low quantitation limit (0.068 µΜ), high reproducibility (RSD 0.37, 10 measurements), and high stability (98% activity after 50 days). FA in food samples was determined by the new sensor with high recoveries from 93 to 108.8%. Graphical Abstract

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Voltammetric determination of folic acid at physiological pH values by using a glassy carbon electrode modified with a multilayer composite consisting of polyoxometalate (H8P2Mo16V2O62) and reduced graphene oxide and prepared via layer-by-layer self-assembly and in-situ photoreduction

Cited by 20 publications

References 35 publications

Polyoxometalate Functionalized Sensors: A Review

Polyoxometalate Functionalized Sensors: A Review

A novel vitamin B9 sensor based on modified screen-printed electrode

Folic Acid Determination in Food Samples Using Green Synthesized Copper Oxide Nanoparticles and Electro-Poly (Methyl Orange) Sensor

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